Darstellung und Kristallstruktur der Verbindungen MnCuX (X=P, As, PxAs1−x)

Three new ternary compounds MnCuP, MnCuP 0.5 As 0.5 and MnCuAs have been prepared and characterized by X-Ray, DTA and magnetic measurements. They crystallize orthorhombically in the space group Pnma (No. 62). The structures were calculated from single crystal data. The melting points were determined by DTA measurements (MnCuP: 1090°C; MnCuP 0.5 As 0.5 : 1000°C; MnCuAs: 950°C). MnCuAs appears to show an antiferromagnetic ordering up to 295 K