The novel high-pressure/high-temperature compound Co₁₂P₇ determined from synchrotron data.

ABSTRACT: The structural properties of cobalt phosphides were investigated at high pressures and temperatures to better understand the behavior of metal-rich phosphides in Earth and planetary inter-iors. Using single-crystal X-ray diffraction synchrotron data and a laser-heated diamond anvil cell, we discovered a new high pressure-temperature (HP-HT) cobalt phosphide, Co₁₂P₇, dodeca-cobalt hepta-phosphide, synthesized at 27 GPa and 1740 K, and at 48 GPa and 1790 K. Co₁₂P₇ adopts a structure initially proposed for Cr₁₂P₇ (space-group type P , Z =1), consisting of chains of edge-sharing CoP₅ square pyramids and chains of corner-sharing CoP₄ tetra-hedra. This arrangement leaves space for trigona

SUBMITTER: Zurkowski C 

PROVIDER: S-EPMC7534243 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature