Crystal structure of base-free [MoOI4]−
Résumé
Air oxidation of [PPh4]3[Mo3I12] produces [PPh4][MoOI4], a rare example of an iodide-containing molybdenum(V) complex, whose structure has been determined by X-ray crystallography. This structural determination completes the [MoOX4]− (X = Cl, Br, I) series. The structural parameters are compared with those of the other halide analogues and with those of crystallographically characterized base adducts, [MoOI4(L)]− (L = H2O, THF). Also, a comparison between the donor power of O2− vs the pentamethyl-cyclopentadienyl anion for molybdenum(V) is made possible by comparing [MoOI4]− with the non-existent (η-C5Me5)MoI4.
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