Tricarbonyl(η⁵-cyclopentadienyl)(trimethylphosphine-P)molybdenum(II) Tetrafluoroborate

The title compound, [Mo(C₅H₅)(C₃H₉P)(CO)₃]BF₄, forms by a ligand-redistribution reaction from [(η⁵-C₅H₅)Mo(CO)₂(PMe₃)FBF₃], which is produced at low temperature by protonation of [(η⁵-C₅H₅)Mo(CO)₂(PMe₃)H] with HBF₄. The cation has a typical four-legged piano stool geometry with Mo—P of 2.496 (2) and Mo—CNT of 2.00 (2) Å, where CNT is the centre of gravity of the cyclopentadienyl ring.

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