Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187, Dresden, Germany.
ESRF, 71 avenue des Martyrs, 38043, Grenoble, France.
Chemistry. 2023 Mar 16;29(16):e202203955. doi: 10.1002/chem.202203955. Epub 2023 Feb 16.
The compound Ge Co (x=0.54(6), a=10.9861(3) Å, space group Im m) prepared under high pressure and at high temperature is metastable under ambient conditions. It crystallizes in a new structure type, Pearson symbol cI82-1.08. The crystal structure represents a slightly distorted cubic primitive arrangement of germanium atoms with part of the Ge cubes filled by cobalt. Analysis of the chemical bonding by real-space methods revealed three-core cluster units Ge Co and seemingly empty regions comprising either covalent inter-polyhedral Ge-Ge bonds or lone-pairs located at the germanium atoms. The electrical conductivity is metal-like.
在高温高压下制备的化合物 GeCo（x=0.54(6)，a=10.9861(3) Å，空间群 Im m）在环境条件下是亚稳的。它结晶在一个新的结构类型，皮尔逊符号 cI82-1.08。晶体结构代表了一个略微扭曲的立方原始锗原子排列，部分锗立方由钴填充。通过实空间方法对化学成键的分析表明，存在三个核簇单元 GeCo 和似乎为空的区域，包含共价多面体 Ge-Ge 键或位于锗原子处的孤对电子。电导率类似于金属。
