Journal article
Cis-dioxo-and cis-(hydroxo)oxo-Mo(V) complexes stabilized by intramolecular hydrogen-bonding
VWL Ng, MK Taylor, JM White, CG Young
Inorganic Chemistry | AMER CHEMICAL SOC | Published : 2010
DOI: 10.1021/ic1011428
Abstract
The reactions of TpiprMoVIO2Cl with salicylanilides and NEt3 produce cis-TpiprMo VIO2(2-OC6H4CONHR) (TpiPr = hydrotris(3-isopropylpyrazol-1-yl)borate, R = Ph, 4-C6H 4Cl, 4-C6H4OMe). The N-methyl complex, Tp iprMoO2-{2-OC6H4CON(Me)Ph}, is similarly prepared. Reduction of the amido complexes by cobaltocene produces green, EPR-active compounds, [CoCp2][TpiPrMo VO2(2-OC6H4CONHR)], that exhibit strong, low energy, v(MoO2) IR bands at ∼ 895 and 790 cm -1 (cf. ∼ 935 and 900 cm-1 for the Mo(VI) analogues). The X-ray structures of all seven complexes have been determined. In each case, the Mo center exhibits a distorted octahedral coordination geometry defined by mutually cis oxo andphenolate ligands..
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Funding Acknowledgements
We thank Mr. Damien C. Clarke for experimental assistance and gratefully acknowledge the financial support from the Australian Research Council, the Donors of the Petroleum Research Fund (administered by the American Chemical Society), and the Albert Shimmins Memorial Fund (for a Writing-up Award).