Pentacarbonyl[tris(2-methoxyphenyl)phosphine-P]chromium and its Molybdenum Analogue

In the title compounds, [Cr(C₂₁H₂₁O₃P)(CO)₅] and [Mo(C₂₁H₂₁O₃P)(CO)₅], the M—C bond lengths for the cis-carbonyl ligands (with respect to the phosphine) are longer than that observed for the trans-carbonyl group. The chromium compound has short intermolecular O...O contacts. The two crystal structures are not isomorphous and crystallize in triclinic and monoclinic systems, respectively.

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