Reactivity of [NBu4]2[Mo2Br6] with several uni- and poly-dentate phosphines. X-Ray structure of [NBu4][MoBr4(Ph2PCH2CH2PPh2)]
Abstract
The reactions of [NBu4]2[Mo2Br6] with the unidentate phosphines PEtPh2, PEt2Ph, and PEt3 and the polydentate phosphines Ph2PCH2CH2PPh2 and PPh(CH2CH2PPh2)2have been studied. Substitution of one or two bromide ligands may take place depending upon the reaction conditions. Ionic and neutral, mono- and bi-nuclear molybdenum compounds were obtained and characterized by analytical and X-ray diffraction methods, and by visible, i.r., and 31P n.m.r. spectroscopy. A general reaction scheme is proposed.