Nucleophilic addition of bifunctional sulfimidosulfides to platinum(IV)-coordinated nitriles
作者:A. V. Makarycheva-Mikhailova、S. I. Selivanov、N. A. Bokach、V. Yu. Kukushkin、P. F. Kelly、A. J. L Pombeiro
DOI:10.1007/s11172-005-0017-x
日期:2004.8
Reactions of the platinum(IV) nitrile complexes [PtCl4(RCN)2] (R = Me, CH2Ph, Ph) with 1,2- and 1,4-PhS(=NH)C6H4SPh in CH2Cl2 afforded addition products of sulfimides and coordinated nitriles, viz., the [PtCl4NH=C(R)N=S(Ph)(C6H4SPh)}2] complexes. The latter were isolated in 75—90% yields and characterized by elemental analysis, positive-ion FAB mass spectrometry, IR spectroscopy, and 1H and 13C1H NMR spectroscopy. The temperature dependence of the 1H NMR spectra of the model [PtCl4NH=C(R)N=SPh2}2] complexes (R = Me, Et) in CD2Cl2 studied in a temperature range from +40 to -70 °C demonstrated that E—Z isomerization of the ligands is a dynamic process in a range from +40 to -10 °C. The activation free energy of this process was calculated.
铂(IV)腈络合物[PtCl4(RCN)2] (R = Me, CH2Ph, Ph)与1,2-和1,4-PhS(=NH)C6H4SPh在CH2Cl2中反应,得到硫酰亚胺和配位化合物的加成产物腈,即 [PtCl4NH=C(R)N=S(Ph)(C6H4SPh)}2] 配合物。后者的分离产率为 75-90%,并通过元素分析、正离子 FAB 质谱、红外光谱以及 1H 和 13C1H NMR 光谱进行表征。在 +40 至 -70 °C 的温度范围内研究的 CD2Cl2 中模型 [PtCl4NH=C(R)N=SPh2}2] 配合物 (R = Me, Et) 的 1H NMR 光谱的温度依赖性配体的E—Z异构化是+40至-10°C范围内的动态过程。计算了该过程的活化自由能。