Reactivity of [eta(5)-CpCo{P(O)(OMe)(2)}(3)]MoOCl2 toward H2O2 and NaOMe: syntheses and X-ray structures of [eta(5)-CpCo{P(O)(OMe)(2)}(3)]MoO2X (X = Cl, OH)

The reaction of LOMeMoOCl2 (L-OMe = eta (5)-CpCo{P(O)(OMe)(2)}(3)) with NaO Me in dry THF gives (L-OMe)MoO2Cl (1), while (L-OMe)MoO2(OH) (2) was readil y obtained from the oxidation of (L-OMe)MoOCl2 with H2O2 in organic solvent s. The molecular structures of compounds 1 and 2 were analyzed by X-ray dif fraction studies. The dioxomolybdenum(VI) compounds I and 2 have a six-coor dinate Mo(VI) with the anionic cobalt(III)-based oxygen tripod ligand occup ying three facial positions. The coordination geometries of 1 and 2 are det ermined as distorted octahedral structures due to the trans influence of bo und chloro or hydroxo ligand. (C) 2001 Elsevier Science B.V. All rights res erved.