31P-NMR and X-ray studies of new rhodium(I) β-ketoiminato complexes Rh(R1C(O)CHC(NH)R2)(CO)(PZ3) where PZ3=PPh3, PCy3, P(OPh)3 or P(NC4H4)3
作者:Yuri S Varshavsky、Margarita R Galding、Tatiana G Cherkasova、Ivan S Podkorytov、Alexey B Nikol'skii、Anna M Trzeciak、Zofia Olejnik、Tadeusz Lis、Józef J Ziółkowski
DOI:10.1016/s0022-328x(01)00805-1
日期:2001.5
the Rh(R1O,N}R2)(CO)(P(OPh)3) or Rh(R1O,N}R2)(CO)(P(NC4H4)3) complex in comparable yields. The RhP(P(OPh)3) distance (2.195(2) Å) in the isomer of Rh(CF3O,N}CMe3)(CO)(P(OPh)3) with P(OPh)3 coordinated trans to N (VI) is ca. 0.04 Å longer than in the isomer of that complex with P(OPh)3 coordinated trans to O (VII). The CO substitution in Rh(R1O,N}R2)(CO)2 by PZ3 ligands (PPh3, PCy3, P(OPh)3) causes
铑(I)β-酮亚胺络合物Rh(R 1 O,N} R 2)(CO)2(O,N} = R 1 C(O)CHC(NH)R 2;磷配体PZ 3(PZ 3 = PCy 3,PPh 3,P(OPh)3,P(NC 4 H 4)3)导致R 1,R 2 = CF 3,Me,CMe 3几种组合)导致以31 P 1为特征的Rh(R 1 O,N} R 2)(CO)(PZ 3)配合物1 H-NMR和X射线方法。强σ供体PZ 3个配体(PZ 3 = PCY 3,PPH 3)替代几乎完全的CO基团的反式到N,形成P-反-to-N异构体。Rh(CF 3 O,N} Me)(CO)(PCy 3)(II),Rh(CF 3 O,N} CMe 3)(CO)(PCy 3)(III),Rh(CF 3 O,N} Me)(CO)(PPh 3)(IV)和Rh(CF 3 O,N} CMe)(CO)(PPh 3)(V)具有正方