Two Forms of Bromo(cycloheptatrienylidene)bis(triphenylphosphine)platinum(II)

The title complex crystallizes in two different crystal systems: one form in the monoclinic system, as [PtBr(C₇H₆)(C₁₈H₁₅P)₂]BF₄.CD₂Cl₂.C₄D₈O, and the other in the orthorhombic crystal system, as [PtBr(C₇H₆)(C₁₈H₁₅P)₂]BF₄.C₄H₈O. The crystal structure of determination of the complex bromo(cycloheptatrienylidene)bis(triphenylphosphine)platinum(II), [PtBr(C₇H₆)(C₁₈H₁₅P₂], revealed that the Pt^II cation is coordinated to a Br atom, two triphenylphosphine donors and cycloheptatrienylidene. The complex has a square-planar geometry around Pt with the triphenylphosphine ligands being trans to each other. The plane of the cycloheptatrienylidene ligand is almost perpendicular to the coordination plane.

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