Materials Data on GePb2(SeO3)4 by Materials Project
Pb2Ge(SeO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.37–3.08 Å. Ge4+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Ge–O bond distances ranging from 1.91–1.96 Å. There are two inequivalent Se4+ sites. In the first Se4+ site, Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.70–1.79 Å. In the second Se4+ site, Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.72–1.77 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one Se4+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one Se4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Pb2+, one Ge4+, and one Se4+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Pb2+ and one Se4+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Pb2+ and one Se4+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pb2+ and one Se4+ atom.