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Reaction of arsane with cobalt or iron carbonyls, and the X-ray crystal structures of [Fe2(CO)8(μ4-As)]2[Fe2(CO)6] and [μ4-AsCo3(CO)8]3

1990; Elsevier BV; Volume: 387; Issue: 2 Linguagem: Inglês

10.1016/0022-328x(90)80024-t

1872-8561

Leslie J. Arnold, Kenneth M. Mackay, Brian K. Nicholson,

Metal complexes synthesis and properties

Reaction of AsH3 with Fe(CO)5 in a hydrocarbon solvent at 110° C provides an improved route to (μ3-As)2Fe3(CO)9, while the corresponding reaction at 70° C with Fe2(CO)9 has given the new cluster [Fe2(CO)8(μ4-As)]2[Fe2(CO)6], 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° 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.