Materials Data on GePb5O7 by Materials Project

Pb5GeO7 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are five 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 2.28–2.94 Å. In the second Pb2+ site, Pb2+ is bonded to four O2- atoms to form distorted PbO4 trigonal pyramids that share corners with two equivalent GeO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.29–2.64 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 2.31–3.18 Å. In the fourth Pb2+ site, Pb2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–2.80 Å. In the fifth Pb2+ site, Pb2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–2.93 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent PbO4 trigonal pyramids. There are a spread of Ge–O bond distances ranging from 1.77–1.80 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to three Pb2+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two Pb2+ and one Ge4+ atom. In the third O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the fourth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one Ge4+ 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 1-coordinate geometry to two Pb2+ and one Ge4+ atom.

Pb₅GeO₇结晶于正交晶系（orthorhombic）的Pbca空间群（space group）。该晶体为三维结构，存在五个不等价的铅离子（Pb²+）位点。在第一个铅离子位点中，铅离子以五配位（5-coordinate）几何构型与五个氧离子（O²-）原子配位，Pb-O键长分布范围为2.28~2.94 Å。在第二个铅离子位点中，铅离子与四个氧离子原子配位，形成畸变的PbO₄三角锥（trigonal pyramids），该三角锥与两个等价的GeO₄四面体（tetrahedra）共享顶点，Pb-O键长分布范围为2.29~2.64 Å。在第三个铅离子位点中，铅离子以五配位（5-coordinate）几何构型与五个氧离子原子配位，Pb-O键长分布范围为2.31~3.18 Å。在第四个铅离子位点中，铅离子以畸变的矩形跷跷板状几何构型与四个氧离子原子配位，Pb-O键长分布范围为2.24~2.80 Å。在第五个铅离子位点中，铅离子以畸变的矩形跷跷板状几何构型与四个氧离子原子配位，Pb-O键长分布范围为2.24~2.93 Å。锗离子（Ge⁴+）与四个氧离子原子配位形成GeO₄四面体（tetrahedra），该四面体与两个等价的PbO₄三角锥共享顶点，Ge-O键长分布范围为1.77~1.80 Å。该结构中存在七个不等价的氧离子（O²-）位点。在第一个氧离子位点中，氧离子以二配位几何构型与三个铅离子和一个锗离子原子成键。在第二个氧离子位点中，氧离子以一配位几何构型与两个铅离子和一个锗离子原子成键。在第三个氧离子位点中，氧离子与四个铅离子原子成键，形成兼具畸变边共享和顶点共享的OPb₄四面体结构。在第四个氧离子位点中，氧离子与四个铅离子原子成键，形成兼具边共享和顶点共享的OPb₄四面体结构。在第五个氧离子位点中，氧离子以一配位几何构型与三个铅离子和一个锗离子原子成键。在第六个氧离子位点中，氧离子与四个铅离子原子成键，形成兼具畸变边共享和顶点共享的OPb₄四面体结构。在第七个氧离子位点中，氧离子以一配位几何构型与两个铅离子和一个锗离子原子成键。