A Diphenylcyclopropene Complex of Tungsten, [WCl₂O(PMePh₂)₂(η²-3,3-diphenylcyclopropene)], Precursor to a Tungsten–Oxo–Olefin Metathesis Catalyst

The title compound, dichlorobis(methyldiphenylphosphine-P) [(1,2-η)-3,3-diphenylcyclopropene]oxotungsten, [WCl₂O(C₁₅H₁₂)(C₁₃H₁₃P)₂], is a mononuclear complex of tungsten with an approximately octahedral environment around the metal atom. The ligand, 3,3-diphenylcyclopropene, is bonded to the W atom in a η²-geometry with effectively identical metal-to-carbon bond distances [W—C1 = 2.133 (7) Å and W—C2 2.131 (7) Å].

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