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Materials Data on P6(Pb2O5)5 by Materials Project

P6(Pb2O5)5 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are ten inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.59–3.00 Å. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.57–3.02 Å. In the third Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.60–3.04 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.60–3.00 Å. In the fifth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.08 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.30–3.10 Å. In the seventh Pb2+ site, Pb2+ is bonded to six O2- atoms to form distorted PbO6 pentagonal pyramids that share corners with four PO4 tetrahedra and an edgeedge with one PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.35–2.95 Å. In the eighth Pb2+ site, Pb2+ is bonded to six O2- atoms to form distorted PbO6 pentagonal pyramids that share corners with four PO4 tetrahedra and an edgeedge with one PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.31–3.00 Å. In the ninth Pb2+ site, Pb2+ is bonded to six O2- atoms to form distorted PbO6 pentagonal pyramids that share corners with four PO4 tetrahedra and an edgeedge with one PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.32–2.98 Å. In the tenth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.11 Å. There are six inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent PbO6 pentagonal pyramids. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid and an edgeedge with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid and an edgeedge with one PbO6 pentagonal pyramid. There is three shorter (1.56 Å) and one longer (1.57 Å) P–O bond length. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two PbO6 pentagonal pyramids and an edgeedge with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.55–1.58 Å. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent PbO6 pentagonal pyramids. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. In the sixth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent PbO6 pentagonal pyramids. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. There are twenty-five inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Pb2+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one P5+ atom. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a single-bond geometry to three Pb2+ and one P5+ atom. In the twenty-third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na7Bi3P12(Pb5O24)2 by Materials Project

Na7Bi3P12(Pb5O24)2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are seven inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.26–2.89 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to nine O2- atoms. There are a spread of Na–O bond distances ranging from 2.39–3.05 Å. In the third Na1+ site, Na1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Na–O bond distances ranging from 2.53–2.91 Å. In the fourth Na1+ site, Na1+ is bonded in a 6-coordinate geometry to nine O2- atoms. There are a spread of Na–O bond distances ranging from 2.48–3.06 Å. In the fifth Na1+ site, Na1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Na–O bond distances ranging from 2.50–2.99 Å. In the sixth Na1+ site, Na1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Na–O bond distances ranging from 2.45–3.00 Å. In the seventh Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.25–2.93 Å. There are ten inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.31–2.82 Å. In the second Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.31–2.83 Å. In the third Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.07 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.28–3.00 Å. In the fifth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.31–3.02 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.04 Å. In the seventh Pb2+ site, Pb2+ is bonded to six O2- atoms to form distorted PbO6 pentagonal pyramids that share a cornercorner with one PbO6 pentagonal pyramid, corners with four PO4 tetrahedra, and an edgeedge with one PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.31–2.78 Å. In the eighth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.07 Å. In the ninth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.27–3.07 Å. In the tenth Pb2+ site, Pb2+ is bonded to six O2- atoms to form distorted PbO6 pentagonal pyramids that share a cornercorner with one PbO6 pentagonal pyramid, corners with four PO4 tetrahedra, and an edgeedge with one PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.29–2.98 Å. There are three inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.30–3.06 Å. In the second Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.31–3.01 Å. In the third Bi3+ site, Bi3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Bi–O bond distances ranging from 2.36–2.85 Å. There are twelve inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid. All P–O bond lengths are 1.56 Å. In the second P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the fourth P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.56 Å) and one longer (1.57 Å) P–O bond length. In the fifth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. In the sixth P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. In the seventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid and an edgeedge with one PbO6 pentagonal pyramid. There is one shorter (1.55 Å) and three longer (1.56 Å) P–O bond length. In the eighth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. In the ninth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the tenth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two PbO6 pentagonal pyramids. There are a spread of P–O bond distances ranging from 1.53–1.59 Å. In the eleventh P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share an edgeedge with one PbO6 pentagonal pyramid. There are a spread of P–O bond distances ranging from 1.53–1.59 Å. In the twelfth P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.55–1.58 Å. There are forty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+, one Bi3+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+, one Bi3+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted tetrahedral geometry to two Na1+, one Bi3+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+, one Pb2+, and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the twenty-third O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+, one Bi3+, and one P5+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the twenty-sixth O2- site, O2- is bonded in a distorted single-bond geometry to two Na1+, one Pb2+, and one P5+ atom. In the twenty-seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the twenty-eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the twenty-ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirtieth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-first O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-second O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-third O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-fifth O2- site, O2- is bonded in a distorted tetrahedral geometry to two Na1+, one Bi3+, and one P5+ atom. In the thirty-sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the thirty-seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+, one Bi3+, and one P5+ atom. In the thirty-eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the thirty-ninth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+, one Bi3+, and one P5+ atom. In the fortieth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the forty-first O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the forty-second O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Bi3+, and one P5+ atom. In the forty-third O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the forty-fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the forty-fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, two Pb2+, and one P5+ atom. In the forty-sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Pb2+, one Bi3+, and one P5+ atom. In the forty-seventh O2- site, O2- is bonded in a 1-coordinate geometry to two Na1+, one Pb2+, and one P5+ atom. In the forty-eighth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+, one Bi3+, and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrPb5O8 by Materials Project

Pb5O4(CrO4) crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cr–O bond distances ranging from 1.66–1.68 Å. In the second Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.67 Å) and one longer (1.68 Å) Cr–O bond length. There are ten inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.38–3.11 Å. In the second Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.30–2.94 Å. In the third Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.27–2.95 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.23–2.47 Å. In the fifth Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.28–2.31 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–2.94 Å. In the seventh Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.14 Å. In the eighth Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.36–3.11 Å. In the ninth Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.26–2.35 Å. In the tenth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.32–3.09 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the second O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and one Pb2+ atom. In the third O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and two Pb2+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and one Pb2+ atom. In the sixth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and three Pb2+ atoms. In the eighth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and two Pb2+ atoms. In the ninth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Pb2+ atoms. In the eleventh O2- site, O2- is bonded in a distorted trigonal planar geometry to three Pb2+ atoms. In the twelfth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and one Pb2+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and two Pb2+ atoms. In the fifteenth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the sixteenth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TePb3 by Materials Project

(Pb)2PbTe crystallizes in the tetragonal I4/mmm space group. The structure is two-dimensional and consists of two Pb sheets oriented in the (0, 0, 1) direction and two PbTe sheets oriented in the (0, 0, 1) direction. In each Pb sheet, Pb is bonded in a distorted square co-planar geometry to four equivalent Pb atoms. All Pb–Pb bond lengths are 3.43 Å. In each PbTe sheet, Pb is bonded in a square co-planar geometry to four equivalent Te atoms. All Pb–Te bond lengths are 3.43 Å. Te is bonded in a square co-planar geometry to four equivalent Pb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ScPb3 by Materials Project

ScPb3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sc is bonded to twelve Pb atoms to form a mixture of face, edge, and corner-sharing ScPb12 cuboctahedra. There are four shorter (3.21 Å) and eight longer (3.57 Å) Sc–Pb bond lengths. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a 12-coordinate geometry to four equivalent Sc and four equivalent Pb atoms. All Pb–Pb bond lengths are 3.21 Å. In the second Pb site, Pb is bonded in a square co-planar geometry to four equivalent Sc atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3Pb5O12 by Materials Project

Pb5Ge3O12 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Pb+2.40+ sites. In the first Pb+2.40+ site, Pb+2.40+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.43 Å) and three longer (2.73 Å) Pb–O bond lengths. In the second Pb+2.40+ site, Pb+2.40+ is bonded in a 6-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.26–2.54 Å. Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.78 Å) and one longer (1.80 Å) Ge–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Pb+2.40+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Pb+2.40+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three Pb+2.40+ and one Ge4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KBiPb by Materials Project

KPbBi crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 12-coordinate geometry to six equivalent Pb and six equivalent Bi atoms. There are two shorter (4.03 Å) and four longer (4.12 Å) K–Pb bond lengths. There are four shorter (3.94 Å) and two longer (4.11 Å) K–Bi bond lengths. In the second K site, K is bonded in a 8-coordinate geometry to four equivalent Pb and four equivalent Bi atoms. All K–Pb bond lengths are 4.07 Å. All K–Bi bond lengths are 3.96 Å. Pb is bonded in a 9-coordinate geometry to five K, two equivalent Pb, and two equivalent Bi atoms. There are one shorter (3.20 Å) and one longer (3.40 Å) Pb–Pb bond lengths. Both Pb–Bi bond lengths are 3.19 Å. Bi is bonded in a 12-coordinate geometry to five K, two equivalent Pb, and one Bi atom. The Bi–Bi bond length is 3.26 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb10Pb14O39 by Materials Project

Nb10Pb14O39 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are eight inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra and edges with five PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 35–44°. There are a spread of Nb–O bond distances ranging from 1.97–2.08 Å. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra, edges with two equivalent PbO8 hexagonal bipyramids, and edges with four PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 38–44°. There are a spread of Nb–O bond distances ranging from 1.99–2.06 Å. In the third Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with four NbO6 octahedra and edges with four PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 28–48°. There are a spread of Nb–O bond distances ranging from 1.92–2.14 Å. In the fourth Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with four NbO6 octahedra and edges with two equivalent PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 28–48°. There are a spread of Nb–O bond distances ranging from 1.92–2.13 Å. In the fifth Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra, edges with two equivalent PbO8 hexagonal bipyramids, and edges with two PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 31–45°. There are a spread of Nb–O bond distances ranging from 1.95–2.11 Å. In the sixth Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with four NbO6 octahedra and edges with two equivalent PbO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 30–48°. There are a spread of Nb–O bond distances ranging from 1.92–2.13 Å. In the seventh Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with four NbO6 octahedra and edges with two equivalent PbO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 30–48°. There are a spread of Nb–O bond distances ranging from 1.93–2.13 Å. In the eighth Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra, edges with two equivalent PbO8 hexagonal bipyramids, and edges with four PbO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 39–44°. There are a spread of Nb–O bond distances ranging from 2.00–2.08 Å. There are ten inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.20–2.88 Å. In the second Pb2+ site, Pb2+ is bonded to seven O2- atoms to form distorted PbO7 hexagonal pyramids that share corners with three PbO7 hexagonal pyramids, edges with two PbO7 hexagonal pyramids, and edges with six NbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.33–2.88 Å. In the third Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–3.02 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–3.13 Å. In the fifth Pb2+ site, Pb2+ is bonded to seven O2- atoms to form distorted PbO7 hexagonal pyramids that share corners with three PbO7 hexagonal pyramids, edges with two equivalent PbO8 hexagonal bipyramids, an edgeedge with one PbO7 hexagonal pyramid, and edges with six NbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.23–2.79 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.23–2.84 Å. In the seventh Pb2+ site, Pb2+ is bonded to eight O2- atoms to form distorted PbO8 hexagonal bipyramids that share edges with two equivalent PbO8 hexagonal bipyramids, edges with two PbO7 hexagonal pyramids, and edges with six NbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.47–2.86 Å. In the eighth Pb2+ site, Pb2+ is bonded to seven O2- atoms to form distorted PbO7 hexagonal pyramids that share corners with three PbO7 hexagonal pyramids, edges with two equivalent PbO8 hexagonal bipyramids, an edgeedge with one PbO7 hexagonal pyramid, and edges with six NbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.23–2.80 Å. In the ninth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.35–3.09 Å. In the tenth Pb2+ site, Pb2+ is bonded to seven O2- atoms to form distorted PbO7 hexagonal pyramids that share edges with two equivalent PbO7 hexagonal pyramids and edges with four NbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.34–2.98 Å. There are twenty-seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Nb5+ and two Pb2+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Nb5+ and three Pb2+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Nb5+ and three Pb2+ atoms. In the seventh O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of corner and edge-sharing OPb4 tetrahedra. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Nb5+ and two equivalent Pb2+ atoms. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ and two Pb2+ atoms. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Nb5+ and two equivalent Pb2+ atoms. In the eleventh O2- site, O2- is bonded to four Pb2+ atoms to form distorted edge-sharing OPb4 tetrahedra. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Nb5+ and two Pb2+ atoms. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two equivalent Pb2+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Nb5+ and two Pb2+ atoms. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two Pb2+ atoms. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Nb5+ and three Pb2+ atoms. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Nb5+ and three Pb2+ atoms. In the twentieth O2- site, O2- is bonded to four Pb2+ atoms to form corner-sharing OPb4 tetrahedra. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Nb5+ and two Pb2+ atoms. In the twenty-second O2- site, O2- is bonded in a bent 150 degrees geometry to two Nb5+ and two equivalent Pb2+ atoms. In the twenty-third O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two equivalent Pb2+ atoms. In the twenty-fourth O2- site, O2- is bonded to four Pb2+ atoms to form edge-sharing OPb4 tetrahedra. In the twenty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ and two Pb2+ atoms. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Nb5+ and two equivalent Pb2+ atoms. In the twenty-seventh O2- site, O2- is bonded to four Pb2+ atoms to form edge-sharing OPb4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf4Ti(PbO3)5 by Materials Project

Hf4Ti(PbO3)5 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Hf4+ sites. In the first Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Hf–O bond distances ranging from 2.04–2.16 Å. In the second Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share corners with two equivalent TiO6 octahedra and corners with four HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Hf–O bond distances ranging from 2.03–2.22 Å. In the third Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share corners with two equivalent TiO6 octahedra and corners with four HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Hf–O bond distances ranging from 2.02–2.22 Å. In the fourth Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–16°. There are a spread of Hf–O bond distances ranging from 2.03–2.22 Å. In the fifth Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share corners with two equivalent TiO6 octahedra and corners with four HfO6 octahedra. The corner-sharing octahedral tilt angles are 15°. There are a spread of Hf–O bond distances ranging from 2.03–2.22 Å. In the sixth Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Hf–O bond distances ranging from 2.03–2.22 Å. In the seventh Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–16°. There are a spread of Hf–O bond distances ranging from 2.04–2.15 Å. In the eighth Hf4+ site, Hf4+ is bonded to six O2- atoms to form HfO6 octahedra that share corners with two equivalent TiO6 octahedra and corners with four HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Hf–O bond distances ranging from 2.03–2.22 Å. There are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Ti–O bond distances ranging from 1.91–2.14 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six HfO6 octahedra. The corner-sharing octahedra tilt angles range from 14–15°. There are a spread of Ti–O bond distances ranging from 1.91–2.14 Å. There are ten inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.53–2.83 Å. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.48–2.80 Å. In the third Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.52–2.80 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.54–2.82 Å. In the fifth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.52–2.84 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.54–2.82 Å. In the seventh Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.52–2.82 Å. In the eighth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.53–2.80 Å. In the ninth Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.48–2.80 Å. In the tenth Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.53–2.80 Å. There are thirty inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the nineteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twentieth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the twenty-third O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms. In the twenty-eighth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the twenty-ninth O2- site, O2- is bonded in a 2-coordinate geometry to two Hf4+ and two Pb2+ atoms. In the thirtieth O2- site, O2- is bonded in a 2-coordinate geometry to one Hf4+, one Ti4+, and two Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P3Pb5O12F by Materials Project

Pb5(PO4)3F crystallizes in the hexagonal P6_3 space group. The structure is three-dimensional. there are six inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent F1- atoms. There are a spread of Pb–O bond distances ranging from 2.42–2.98 Å. There are one shorter (2.77 Å) and one longer (3.16 Å) Pb–F bond lengths. In the second Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent F1- atoms. There are a spread of Pb–O bond distances ranging from 2.42–2.98 Å. There are one shorter (2.77 Å) and one longer (3.16 Å) Pb–F bond lengths. In the third Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent F1- atoms. There are a spread of Pb–O bond distances ranging from 2.42–2.98 Å. There are one shorter (2.77 Å) and one longer (3.16 Å) Pb–F bond lengths. In the fourth Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent F1- atoms. There are a spread of Pb–O bond distances ranging from 2.42–2.98 Å. There are one shorter (2.77 Å) and one longer (3.16 Å) Pb–F bond lengths. In the fifth Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.55–2.89 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.55–2.90 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. F1- is bonded in a 6-coordinate geometry to six Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Lead leaching and electrowinning in acetic acid for solar module recycling

It is imperative to recover lead (Pb) contained in end-of-life solar modules. In this paper, a two-step leaching and electrowinning process using acetic acid is investigated for Pb recovery. Acetic acid with hydrogen peroxide can dissolve Pb quickly and, under some conditions, in a matter of minutes. Pb electrowinning has been successfully demonstrated from aqueous solutions of 0.009 M lead(II) acetate with 0–10% v/v acetic acid. Pb-containing deposits are found on both the copper cathode and graphite anode. X-ray diffraction, energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy confirm the presence of metallic Pb and Pb(II) oxide (PbO) co-deposits on the cathode. Further, there is also the formation of lead subacetate on the cathode under certain conditions. On the anode, the deposit consists of lead(IV) oxide and superoxide (PbO 2 and Pb 1–x O 2 ). A Pb recovery rate of 99% is achieved in 0.009 M lead(II) acetate solutions with 10% v/v acetic acid by applying a reduction potential of either –0.8 V or –1.0 V versus the silver/silver chloride reference electrode for 24h. Pb leaching with acetic acid is also demonstrated from milled silicon solar modules.

14 SOLAR ENERGY↗
DOE OSTI2024

Lead Adsorption and Desorption at the Barite (001) Surface in the Presence of EDTA

Scaling minerals, such as barite, can cause detrimental consequences for oil/gas pipelines and water systems, but their formation can be inhibited by organic chelators such as ethylenediaminetetraacetic acid (EDTA). Here, we resolve how EDTA affects sorption and desorption of Pb at the barite (001) surface using a combination of X-ray scattering and microscopy measurements. In the presence of EDTA, Pb incorporated in the topmost part of the barite surface and adsorbed as inner-sphere complexes on the surface. In barite saturated solutions containing [Pb] ≥ 100 μM, overgrowth films grew along step edges. These films were exclusively monolayer thick, indicating that their growth was a self-limiting process. Approximately half of the Pb was removed after 14.5 h reaction with a Pb-free EDTA solution where most of the desorption occurred to adsorbed Pb rather than incorporated Pb. Dissolution proceeded primarily via step retreat and etch pit formation in EDTA, but in deionized water, the secondary phase was quickly removed within 3 min. Together these results suggest EDTA binds to both the surface and Pb in solution, which limits Pb sorption. However, EDTA binding to the surface also inhibits removal of the secondary phase that formed at higher Pb concentrations.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
NASA NTRS2017

Lead in Martian Meteorites-- Observations and Inconsistencies: I. Chassigny

The history of Pb isotope analyses of the martian meteorites (SNC) and their interpretations is laden with difficulties. Two different analytical groups have interpreted their ancient (≥ 4 Ga) shergottite Pb ages as primary [1-5]. A Nakhla age of approximately 4.3 Ga has been interpreted to be primary as well [2]. This is in stark contrast to the young (≤ 1.4 Ga) crystallization ages defined by the Rb-Sr, Sm-Nd, Lu-Hf, and KAr systems [6]. Possibly, a better interpretation for the ancient Pb ages is that they reflect the formation times of the various SNC source regions [7]. A difficulty in dealing with Pb is that terrestrial contamination is ubiquitous, unlike the other chronometer systems noted above. This issue is complicated by the fact that radioactive decay causes localized mineral damage. So washing and leaching to remove Pb contamination tends to remove in situ radiogenic Pb. This issue is further compounded because U and Th are often concentrated in phosphates and other minor phases, so the leaching process tends to remove these, especially phosphates. Another difficulty is that it is not clear whether the observed Pb isotopic variation in leachates, residues, and ion-microprobe analyses is due to terrestrial or to indigenous martian Pb contamination [e.g., 8]. A third difficulty is that the shergottites on the one hand, and the nakhlites and chassignites on the other, appear to have come from separate source regions with different chemical compositions [e.g., 7]. Thus, it is expected that their Pb isotopic characteristics would be different. And even if all these meteorite types came from the same source region, their igneous ages differ considerably. The nakhlites and chassignites are ~1.4 Ga and the shergottites are ≤ 600 Ma [e.g., 6]. This age difference alone should assure that the two distinct SNC groups have differing Pb isotopic signatures.

Jones, J. H.↗
NASA NTRS2017

Shergottite Lead Isotope Signature in Chassigny and the Nakhlites

The nakhlites/chassignites and the shergottites represent two differing suites of basaltic martian meteorites. The shergottites have ages less than or equal to 0.6 Ga and a large range of initial Sr-/Sr-86 and epsilon (Nd-143) ratios. Conversely, the nakhlites and chassignites cluster at 1.3-1.4 Ga and have a limited range of initial Sr-87/Sr-86 and epsilon (Nd-143). More importantly, the shergottites have epsilon (W-182) less than 1, whereas the nakhlites and chassignites have epsilon (W-182) approximately 3. This latter observation precludes the extraction of both meteorite groups from a single source region. However, recent Pb isotopic analyses indicate that there may have been interaction between shergottite and nakhlite/chassignite Pb reservoirs.Pb Analyses of Chassigny: Two different studies haveinvestigated 207Pb/204Pb vs. 206Pb/204Pb in Chassigny: (i)TIMS bulk-rock analyses of successive leaches and theirresidue [3]; and (ii) SIMS analysis of individual minerals[4]. The bulk-rock analyses fall along a regression of SIMSplagioclase analyses that define an errorchron that is olderthan the Solar System (4.61±0.1 Ga); i.e., these define amixing line between Chassigny’s principal Pb isotopic components(Fig. 1). Augites and olivines in Chassingy (notshown) also fall along or near the plagioclase regression [4].This agreement indicates that the whole-rock leachateslikely measure indigenous, martian Pb, not terrestrial contamination[5]. SIMS analyses of K-spars and sulfides definea separate, sub-parallel trend having higher 207Pb/206Pbvalues ([4]; Fig. 1). The good agreement between the bulkrockanalyses and the SIMS analyses of plagioclases alsoindicates that the Pb in the K-spars and sulfides cannot be amajor component of Chassigny.The depleted reservoir sampled by Chassigny plagioclaseis not the same as the solar system initial (PAT) andrequires a multi-stage origin. Here we show a two-stagemodel (Fig. 1) with a 238U/204Pb (μ) of 0.5 for 4.5-2.4 Gaand a μ of 7 for 2.4-1.4 Ga. This is not a unique model butdoes produce a Pb composition that falls on the plagioclaseregression at 1.4 Ga, the approximate igneous age of Chassigny [1]. It should be noted that low-μ single-stage modelsare not capable of producing sufficiently radiogenic 206Pb/204Pb at 1.4 Ga.Relation to Shergottites: The Chassigny K-spars and sulfides fall along a second mixing line defined by leachesand residues of depleted and intermediate shergottites [6]. This mixing line falls above the plagioclase regression.Therefore, we also interpret the radiogenic component of this mixing line to represent indigenous martian Pb. It ispossible that the depleted and intermediate shergottites and the Chassigny plagioclases sample radiogenic Pb from thethe same source, i.e., the mixing lines may intersect at high 206Pb/204Pb.Both K-spar and sulfide are late-stage phases. At the time of their crystallization, the Chassigny system appearsto have remained open to a depleted shergottite Pb reservoir. The depleted component of the shergottite mixing linecan be generated by a single-stage evolution from PAT (4.5 to 1.4 Ga) in a reservoir having a μ ~2. A similar modelfor the most depleted shergottites is also possible: μ = 1.5 for 4.5 to 0.3 Ga.Nakhlites: Nakhlite analyses plot between the shergottite and Chassigny plagioclase regressions [3]. So again,members of the nakhlite/chassignite suite show affinities to shergottite Pb.

Jones, J. H.↗
NASA NTRS2023

A Technique to Measure Coronal Electron Density, Temperature, and Velocity Above 2.5 R⨀ from Sun Center using Polarized Brightness Spectrum

The current model for the polarized brightness (pB) spectrum has a decades-long history of progressively incorporating its dependence on electron density Ne, temperature Te, and flow velocity in the radial direction V e . The pB N e spectrum follows the exact shape of the photosphere spectrum, which is not smooth, which is expected from the thermal Doppler broadening of the photosphere spectrum due to the high coronal T e ; the pB N e T e spectrum is smooth, but the free coronal electrons remain static and unaffected by solar wind, and the pB N e T e V e spectrum is red-shifted by electrons seeing a red-shifted photosphere spectrum as they flow away from the Sun as solar wind, which takes a radial direction above 2.5 R ⨀ from Sun center. In this article, we review the progress of the above three model pB spectra in describing the observations and highlight the differences, first by comparing the three model pB spectra against wavelength using a model for Ne and constant values for T e and V e , and second by generating three model 2D pB maps by integrating over a selected wavelengthregion in the three model pB spectra along lines of sight passing through the 14 July 2000 (“Bastille Day”) coronal mass ejection (CME) model, which contains 3D information on N e , T e , and V e . In this regard, the COronal Diagnostic EXperiment (CODEX) on the International Space Station (ISS) in 2024 will measure N e , T e , and V e by matching the measured pB with modeled pB N e T e V e in selected wavelength regions using multiple filters.

Electron density↗
DOE OSTI2020

Materials Data on Rh3(PbS)2 by Materials Project

Rh3(PbS)2 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Rh is bonded in a distorted linear geometry to four Pb and two equivalent S atoms. There are two shorter (2.89 Å) and two longer (2.91 Å) Rh–Pb bond lengths. Both Rh–S bond lengths are 2.34 Å. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded to six equivalent Rh and two equivalent S atoms to form corner-sharing PbRh6S2 hexagonal bipyramids. Both Pb–S bond lengths are 3.08 Å. In the second Pb site, Pb is bonded in a hexagonal planar geometry to six equivalent Rh atoms. S is bonded in a 4-coordinate geometry to three equivalent Rh and one Pb atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ErAgPb by Materials Project

ErAgPb crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Er is bonded in a 5-coordinate geometry to six equivalent Ag and five Pb atoms. There are two shorter (3.33 Å) and four longer (3.62 Å) Er–Ag bond lengths. There are four shorter (3.19 Å) and one longer (3.24 Å) Er–Pb bond lengths. Ag is bonded in a 12-coordinate geometry to six equivalent Er, two equivalent Ag, and four Pb atoms. Both Ag–Ag bond lengths are 3.20 Å. There are two shorter (2.89 Å) and two longer (2.93 Å) Ag–Pb bond lengths. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a distorted q6 geometry to three equivalent Er and six equivalent Ag atoms. In the second Pb site, Pb is bonded in a 9-coordinate geometry to six equivalent Er and three equivalent Ag atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LuAgPb by Materials Project

LuAgPb crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Lu is bonded in a 5-coordinate geometry to six equivalent Ag and five Pb atoms. There are two shorter (3.30 Å) and four longer (3.60 Å) Lu–Ag bond lengths. There are four shorter (3.17 Å) and one longer (3.23 Å) Lu–Pb bond lengths. Ag is bonded in a 12-coordinate geometry to six equivalent Lu, two equivalent Ag, and four Pb atoms. Both Ag–Ag bond lengths are 3.18 Å. There are two shorter (2.87 Å) and two longer (2.92 Å) Ag–Pb bond lengths. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a distorted q6 geometry to three equivalent Lu and six equivalent Ag atoms. In the second Pb site, Pb is bonded in a 9-coordinate geometry to six equivalent Lu and three equivalent Ag atoms.

36 MATERIALS SCIENCE↗