Diphenylvinylphosphine (DPVP) complexes containing the (5-MeC5H4)Ru(II) moiety: synthesis, characterization and reactions

The complex [(5-MeC5H4)Ru(DPVP)2(CH3CN)]PF6(4)(DPVP = Ph2PCHCH2) loses CH3CN under vacuum to produce the phosphaallyl complex [(5-MeC5H4)Ru(1-DPVP)(3-DPVP)]PF6(6) and reacts with Me3SiCCH and PhCCH in CH2Cl2–CH3OH solutions to form the methoxymethylcarbene [(5-MeC5H4)(DPVP)2RuC(OCH3)(CH3)] PF6(7) and the carbonyl complex [(5-MeC5H4)Ru(DPVP)2(CO)]PF6(8), respectively. In contrast [(5-MeC5H4)Ru (DPVP)(CO)(CH3CN)]PF6(15) does not lose CH3CN to form a phosphaallyl complex. The structures of the complexes described herein have been deduced from elemental analyses, infrared spectroscopy, 1H, 13C{1H}, 1H NOE, where appropriate by 31P{1H} NMR spectroscopy and in eight cases by X-ray crystallography.