Dumbbells of five-connected Ge atoms and superconductivity in CaGe3

Inorg Chem. 2012 May 21;51(10):5509-11. doi: 10.1021/ic300576a. Epub 2012 May 7.

Abstract

CaGe(3) has been synthesized at high-pressure, high-temperature conditions. The atomic pattern comprises intricate germanium layers of condensed moleculelike dimers. Below T(c) = 6.8 K, type II superconductivity with moderately strong electron-phonon coupling is observed.