络合物FAC - [REX(CO)3(RSCH 2 CH 2 SBU吨)](X =氯,溴,I; R =吨卜中,Me)已经被制备的反应[REX(CO)5 ]与在四氢呋喃中适当的二硫醚。通过可变温度1 H和13 C 1 H NMR光谱研究了这些配合物中的硫转化。这些方法表明,对于R = t Bu,当NMR时标上硫的转化速度很慢时,只有内消旋-2 invertomer作为溶液中的大量存在。在R = Me的情况下,从低温NMR光谱获得了存在两个反相异构体,即dl-2和dl-3的证据。观察到一些卤素和反相异构体对NMR化学位移的依赖性,最显着的是在13 C 1 H NMR参数中。
络合物FAC - [REX(CO)3(RSCH 2 CH 2 SBU吨)](X =氯,溴,I; R =吨卜中,Me)已经被制备的反应[REX(CO)5 ]与在四氢呋喃中适当的二硫醚。通过可变温度1 H和13 C 1 H NMR光谱研究了这些配合物中的硫转化。这些方法表明,对于R = t Bu,当NMR时标上硫的转化速度很慢时,只有内消旋-2 invertomer作为溶液中的大量存在。在R = Me的情况下,从低温NMR光谱获得了存在两个反相异构体,即dl-2和dl-3的证据。观察到一些卤素和反相异构体对NMR化学位移的依赖性,最显着的是在13 C 1 H NMR参数中。
A multinuclear (1H, 13C and 95Mo) NMR investigation of sulphur inversion in molybdenum tetracarbonyl complexes of chelating dithioethers
作者:Edward W. Abel、David E. Budgen、Ian Moss、Keith G. Orrell、Vladimir Šik
DOI:10.1016/0022-328x(89)85284-2
日期:1989.2
The complexes cis-[Mo(CO)4(RSCH2CH2SR)] (R = Me, Et, iPr, tBu); cis-[Mo(CO)4(cis-tBuSCHCHSBut)] and cis-[Mo(CO)4(MeSCH2CH2SBut)] have been prepared, and the pyramidal sulphur inversion investigated by variable temperature 1H and 13C1H} NMR spectroscopy, and variable temperature 1H 2D NMR exchange spectroscopy. Sulphur inversion barriers calculated for these complexes show a marked dependence on the
Abel, Edward W.; Moss, Ian; Orrell, Keith G., Journal of the Chemical Society, Dalton Transactions
作者:Abel, Edward W.、Moss, Ian、Orrell, Keith G.、Sik, Vladimir、Stephenson, David
DOI:——
日期:——
The synthesis and dynamic behaviour of halogentricarbonylrhenium(I) complexes of some sterically hindered dithioethers
作者:Edward W. Abel、Ruth Corben、Ian Moss、Keith G. Orrell、Nigel R. Richardson、Vladimir Sǐk
DOI:10.1016/0022-328x(88)80187-6
日期:1988.4
Me) have been prepared by the reaction of [ReX(CO)5] with the appropriate dithioether in tetrahydrofuran. Sulphur inversion in these complexes has been studied by variable temperature 1H and 13C 1H NMR spectroscopy. These methods showed that, for R = tBu, when sulphur inversion was slow on the NMR timescale only the meso-2 invertomer was present as a significant population in solution. Where R = Me, evidence
络合物FAC - [REX(CO)3(RSCH 2 CH 2 SBU吨)](X =氯,溴,I; R =吨卜中,Me)已经被制备的反应[REX(CO)5 ]与在四氢呋喃中适当的二硫醚。通过可变温度1 H和13 C 1 H NMR光谱研究了这些配合物中的硫转化。这些方法表明,对于R = t Bu,当NMR时标上硫的转化速度很慢时,只有内消旋-2 invertomer作为溶液中的大量存在。在R = Me的情况下,从低温NMR光谱获得了存在两个反相异构体,即dl-2和dl-3的证据。观察到一些卤素和反相异构体对NMR化学位移的依赖性,最显着的是在13 C 1 H NMR参数中。
Abel, Edward W.; Moss, Ian; Orrell, Keith G., Journal of the Chemical Society, Dalton Transactions, 1988, p. 521 - 532
作者:Abel, Edward W.、Moss, Ian、Orrell, Keith G.、Sik, Vladimir、Stephenson, David、et al.