Reactivity of [η 5-CpCo{P(O)(OMe) 2} 3]MoOCl 2 toward H 2O 2 and NaOMe: syntheses and X-ray structures of [η 5-CpCo{P(O)(OMe) 2} 3]MoO 2X (X=Cl, OH)

Abstract

The reaction of L OMeMoOCl 2 (L OMe=η 5-CpCo{P(O)(OMe) 2} 3) with NaOMe in dry THF gives (L OMe)MoO 2Cl ( 1), while (L OMe)MoO 2(OH) ( 2) was readily obtained from the oxidation of (L OMe)MoOCl 2 with H 2O 2 in organic solvents. The molecular structures of compounds 1 and 2 were analyzed by X-ray diffraction studies. The dioxomolybdenum(VI) compounds 1 and 2 have a six-coordinate Mo(VI) with the anionic cobalt(III)-based oxygen tripod ligand occupying three facial positions. The coordination geometries of 1 and 2 are determined as distorted octahedral structures due to the trans influence of bound chloro or hydroxo ligand.