DOE OSTI2020
CuPb3(O2Cl)2 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Cu2+ is bonded in a square co-planar geometry to four O2- atoms. All Cu–O bond lengths are 1.86 Å. There are three inequivalent Pb+2.67+ sites. In the first Pb+2.67+ site, Pb+2.67+ is bonded in a 4-coordinate geometry to four equivalent O2- and four Cl1- atoms. There are two shorter (2.31 Å) and two longer (2.33 Å) Pb–O bond lengths. There are a spread of Pb–Cl bond distances ranging from 3.33–3.42 Å. In the second Pb+2.67+ site, Pb+2.67+ is bonded in a 3-coordinate geometry to three O2- and four Cl1- atoms. There are two shorter (2.34 Å) and one longer (2.37 Å) Pb–O bond lengths. There are a spread of Pb–Cl bond distances ranging from 3.08–3.41 Å. In the third Pb+2.67+ site, Pb+2.67+ is bonded in a 3-coordinate geometry to three O2- and four Cl1- atoms. There are one shorter (2.39 Å) and two longer (2.41 Å) Pb–O bond lengths. There are a spread of Pb–Cl bond distances ranging from 3.24–3.35 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four Pb+2.67+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu2+, one Pb+2.67+, and one Cl1- atom. The O–Cl bond length is 3.55 Å. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu2+, one Pb+2.67+, and one Cl1- atom. The O–Cl bond length is 3.51 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 8-coordinate geometry to seven Pb+2.67+ and one O2- atom. In the second Cl1- site, Cl1- is bonded in a 5-coordinate geometry to five Pb+2.67+ and one O2- atom.