Add time:08/06/2019         Source:sciencedirect.com

Transition metal phosphorus trisulfide (cas 12165-69-4) compounds with the general formula MPS3, with M = Mn, Fe, Ni, have been prepared by chemical vapor transport, vapor sublimation, and direct combination of the elements. Chemical transport is accomplished by using 75 Torr of chlorine gas as a transport agent and a temperature gradient of 750° → 690°C or 700° → 640°C. The structure of these three compounds, which belongs to the monoclinic space group C2m, is related to that of CdCl2 with a distorted cubic close-packing of the sulfur atoms. Metal atoms and phosphorus-phosphorus pairs occupy the trigonally distorted octahedral holes in a ratio of 2:1 and are ordered throughout the structure. Magnetic susceptibility measurements indicate that all three compounds are antiferromagnetic. The paramagnetic moments indicate that the metal ions in each case exist in the divalent high-spin state.

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