Abstract
Syntheses of bischalcogenides and Mo(0) and W(0) complexes of bis(2-diphenylphosphinoimidazol-1-yl)methane (1), bis(5-diphenylphosphinopyrazol-1-yl)methane (2) and bis(5-diphenylphosphino-1,2,4-triazol-1-yl)methane (3) are described. The reactions of 1-3 with aq. H2O2 or elemental sulfur afforded corresponding bis(chalcogenide) derivatives 4-6 and 7, respectively. The reactions of 1-3 with [M(NC5H11)2(CO)4] (M = Mo, W) resulted in the formation of respective chelate complexes, cis-[M(CO)4{CH2(1,3-C3H2N2PPh2)2}-κ2P,P] (8, M = Mo; 9, M = W), cis-[M(CO)4{CH2(1,2-C3H2N2PPh2)2}-κ2P,P] (10, M = Mo; 11, M = W) and cis-[M(CO)4{CH2(1,2,4-C2HN3PPh2)2}-κ2P,P] (12, M = Mo; 13, M = W). The molecular structures of 5, 6 and 9 were confirmed by single-crystal X-ray diffraction studies.
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Acknowledgements
We also thank the Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, for instrumentation facilities, for spectral and analytical data. J.T.M thanks the Louisiana Board of Regents for the purchase of the CCD diffractometer and the Chemistry Department of Tulane University for support of the X-ray laboratory.
Disclosure statement
No potential conflict of interest was reported by the authors.