Oxidative addition of RCOI to [AsPh4][Rh(CO)2I2]. Synthesis of [AsPh4][RCORh(CO)2I3] (R = Me, Et, n-Pr, i-Pr)
作者:Laurie A. Howe、Emilio E. Bunel
DOI:10.1016/0277-5387(94)00386-s
日期:1995.1
Reaction of [AsPh(4)][Rh(CO)(2)I-2] (1) with RCOI yields complexes [AsPhh(4)](2) [RCORh(CO)I-3](2) (2, R = Me; 3, R = Et; 4, R = n-Pr; 5, R= i-Pr). The (CO)-C-13 scram bling process for complexes [AsPh(4)][RCORh((CO)-C-13)(S)I-3] (R = Me, Et; S = CD3CN) along with the skeleton isomerization of [AsPh(4)][RCORh(CO)(S)I-3] (R = n-Pr, i-Pr) was determined by H-1 NMR spectroscopy. Rates of CO insertion into the Rh-C bond in [AsPh(4)][R-Rh(CO)(3)I-3] (R = Me, n-Pr, i-Pr) were determined. Thermolysis of [AsPh(4)] [MeCORh(CO)(CD3CN)I-3] (6) in CD3CN gives methyl iodide in contrast to [AsPh(4)] [i-PrCoRh(Co-13) (CD3CN)I-3] (7) and [AsPh(4)][n-PrCORh((CO)-C-13)(CD3CN)I-3] (8) which give only propene as the organic fragment.