Element and Arsenides

Kjekshus, and A. F. Andresen, Acta Chem. Scand., 1972, 26, 4057. 

Neptunium diarsenide, formed by heating the hydride and arsenic in a sealed tube at ca. 320 for a week, has a powder pattern that indicates a FegAs structure. Heating the compound to 640 °C yields the monoarsenide, with a sodium chloride structure. Both plutonium and americium monoarsenides can be obtained from reactions of the hydride and arsenic at ca. 320 C. 

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