Reaction of arsane with cobalt or iron carbonyls, and the X-ray crystal structures of 4-As)>2 and 4-AsCo3(CO)8>3

Article abstract of DOI:10.1016/0022-328X(90)80024-T

Reaction of AsH3 with Fe(CO)5 in a hydrocarbon solvent at 110 deg C provides an improved route to (μ₃-As)2Fe3(CO)9, while the corresponding reaction at 70 deg C with Fe2(CO)9 has given the new cluster 4-As)>2, which has been shown by X-ray crystallography to consist of four AsFe2 triangles linked by spiro-As atoms and an Fe-Fe edge.The reaction at 20 deg C of AsH3 with Co2(CO)8 gave the known trimer <μ₄-AsCo3(CO)9>3 which was fully characterised by an X-ray diffraction study.