Concepedia

Zur Struktur von KFe<sub>2</sub>As<sub>2</sub>, KCo<sub>2</sub>As<sub>2</sub>, KRh<sub>2</sub>As / Crystal Structure of KFe<sub>2</sub>As<sub>2</sub>, KCo<sub>2</sub>As<sub>2</sub>, KRh<sub>2</sub>As <sub>2</sub> and KRh<sub>2</sub>P<sub>2</sub>

Sándor Rózsa, H.-P. Schuster

Zeitschrift für Naturforschung B · 1981 · 53 citations · 0 references

DOIFull text

Open access

Concepts

Abstract

Abstract Four new ternary compounds KB 2 X 2 (B = Fe, Co, Rh; X = P, As) were prepared. They are isotypic and crystallize in a ThCr 2 Si 2 -type structure (I4/mmm) with the following lattice constants: KFe 2 As 2 : a = 384.2 pm c = 1386.1 pm KCO 2 AS 2 : a = 379.4 pm c = 1357.0 pm KRh 2 As 2 : a = 398.7 pm c = 1326.7 pm KRh 2 P 2 : a = 388.4 pm c = 1298.6 pm