Materials Data on LaCoC2 by Materials Project

LaCoC2 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. La3+ is bonded in a 8-coordinate geometry to eight C+2.50- atoms. There are a spread of La–C bond distances ranging from 2.76–2.81 Å. Co2+ is bonded in a 4-coordinate geometry to four C+2.50- atoms. There is one shorter (1.95 Å) and three longer (2.02 Å) Co–C bond length. There are two inequivalent C+2.50- sites. In the first C+2.50- site, C+2.50- is bonded in a 7-coordinate geometry to four equivalent La3+, two equivalent Co2+, and one C+2.50- atom. The C–C bond length is 1.37 Å. In the second C+2.50- site, C+2.50- is bonded in a 7-coordinate geometry to four equivalent La3+, two equivalent Co2+, and one C+2.50- atom.

LaCoC₂结晶于单斜晶系Cc空间群。其晶体结构为三维框架。三价镧离子（La³⁺）采取八配位几何构型，与八个碳离子（C⁺2.50⁻）形成配位键。La-C键的键长分布范围为2.76~2.81 Å。二价钴离子（Co²⁺）采取四配位几何构型，与四个C⁺2.50⁻原子形成配位键，其中Co-C键长包含一个1.95 Å的较短键长与三个2.02 Å的较长键长。体系存在两个不等价的C⁺2.50⁻位点：在第一个C⁺2.50⁻位点中，该碳原子采取七配位几何构型，与四个等价的La³⁺、两个等价的Co²⁺以及一个C⁺2.50⁻原子成键，C-C键长为1.37 Å；在第二个C⁺2.50⁻位点中，该碳原子同样采取七配位几何构型，与四个等价的La³⁺、两个等价的Co²⁺以及一个C⁺2.50⁻原子成键。