ABSTRACT Chloride displacement from RuCl2(PPh3)(3) by (NHPr2)-Pr-i/CO2 in toluene as medium gave the N,N-di-iso-propylcarbamato derivative Ru((O2CNPr2)-Pr-i)(2)(Phh(3))(2), (1), whose X-ray crystal structure determination showed the mononuclear compound to contain hexacoordinated ruthenium bonded to bidentate carbamato and to cis-arranged tertiary phosphine groups in a distorted octahedral geometry. Carbonylation at room temperature rapidly converted 1 to the monocarbonyl derivative Ru((O2CNPr2)-Pr-i)(2)(PPh3)(2)(CO) (2), presumably containing a monodentate carbamato group, the dicarbonyl compound Ru((O2CNPr2)-Pr-i)(2)(PPh3)(2)(CO)(2) (3) being formed over longer reaction times. X-ray diffraction data showed 3 to contain hexacoordinate ruthenium(II) with monodentate carbamato groups trans to the carbonyl groups and with tr ans-arranged triphenylphosphine groups. Controlled hydrolysis of 3 yielded the dicarbonyl-carbonato complex Ru(O3C)(PPh3)(2)(CO)(2). H2O (4), crystallographically...
Triphenylphosphine-substituted N,N-di-iso-propylcarbamate of ruthenium(II) and its reactions with carbon monoxide
BELLI, DANIELA;CALDERAZZO, FAUSTO;LABELLA, LUCA;MARCHETTI, FABIO
2000-01-01
Abstract
ABSTRACT Chloride displacement from RuCl2(PPh3)(3) by (NHPr2)-Pr-i/CO2 in toluene as medium gave the N,N-di-iso-propylcarbamato derivative Ru((O2CNPr2)-Pr-i)(2)(Phh(3))(2), (1), whose X-ray crystal structure determination showed the mononuclear compound to contain hexacoordinated ruthenium bonded to bidentate carbamato and to cis-arranged tertiary phosphine groups in a distorted octahedral geometry. Carbonylation at room temperature rapidly converted 1 to the monocarbonyl derivative Ru((O2CNPr2)-Pr-i)(2)(PPh3)(2)(CO) (2), presumably containing a monodentate carbamato group, the dicarbonyl compound Ru((O2CNPr2)-Pr-i)(2)(PPh3)(2)(CO)(2) (3) being formed over longer reaction times. X-ray diffraction data showed 3 to contain hexacoordinate ruthenium(II) with monodentate carbamato groups trans to the carbonyl groups and with tr ans-arranged triphenylphosphine groups. Controlled hydrolysis of 3 yielded the dicarbonyl-carbonato complex Ru(O3C)(PPh3)(2)(CO)(2). H2O (4), crystallographically...I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
