Darstellung und Kristallstruktur von CaRh<sub>2</sub>B<sub>2</sub> und CaIr<sub>2</sub>B<sub>2</sub> / Preparation and Crystal Structure of CaRh<sub>2</sub>B<sub>2</sub> und CaIr<sub>2</sub>B<sub>2</sub> - Concepedia

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Darstellung und Kristallstruktur von CaRh<sub>2</sub>B<sub>2</sub> und CaIr<sub>2</sub>B<sub>2</sub> / Preparation and Crystal Structure of CaRh<sub>2</sub>B<sub>2</sub> und CaIr<sub>2</sub>B<sub>2</sub>

DOI Full Paper Access

26

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0

References

1978

Year

Bernd M. Schmidt, Walter Jung

Zeitschrift für Naturforschung B

Materials ScienceInorganic ChemistryCrystal StructureEngineeringCarh 2Structure ElucidationIsolated Boron-atomsMain Group ChemistryChemistryCair 2Crystal FormationCrystallographyCrystal Structure DesignBiomolecular Engineering

Abstract

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.