Answers are grounded in this paper and cite their sources.
The isotypic compounds CaRh 2 B 2 and CaIr 2 B 2 were prepared and investigated by X-ray methods. They crystallize orthorhombic in space group Fddd-D 2h 24 with lattice constants CaRh 2 B 2 : a = 1060.6 ± 0.4 pm, b = 924.0 ± 0.4 pm, c = 583.2 ± 0.2 pm. CaIr 2 B 2 : a = 1072.7 ± 0.4 pm, b = 925.7 ± 0.4 pm, c = 587.7 ± 0.2 pm. The structure contains isolated boron-atoms and can be derived from the CeCo 3 B 2 - or CaCu 5 -type of structure, respectively.
No takes yet. Share an insight, caveat, or question.
Schmidt et al. (1978) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: