Selective Cleavage of P−N Bonds and the Conversion of Rhodium <i>N</i>-Pyrrolyl Phosphine Complexes into Diphosphoxane-Bridged Dimers
作者:Andrew D. Burrows、Mary F. Mahon、Mark T. Palmer、Maurizio Varrone
DOI:10.1021/ic0108989
日期:2002.4.1
Rhodium(I) complexes trans-[RhCl(CO)(PR2NC4H3C(O)ME-(2)})2] (R = Ph, NC4H4) react with water to give the diphosphoxane-bridged dimers [Rh2Cl2(CO)(2)(mu-PR2OPR2)(2)] following cleavage of the P-N bonds to the 2-acetyl-N-pyrrolyl groups. The two dimers have been crystallographically characterized and show a number of structural differences, with the PPh2OPPh2 compound possessing semibridging chloride and carbonyl ligands whereas the P(NC4H4)(2)-OP(NC4H4)(2) compound contains only terminal chlorides and carbonyls. No evidence for cleavage of the P-N bonds involving the unfunctionalized N-pyrrolyl groups in trans-[RhCl(CO)(PNC4H4}(2)-NC4H3C(O)Me-(2)})(2)] was observed.