Influence of Electronically and Sterically Tunable Cinnamate Ligands on the Spectroscopic, Kinetic, and Thermodynamic Properties of Bis(triphenylphosphine)palladium(0) Olefin Complexes
作者:Magnus R. Buchner、Bettina Bechlars、Bernhard Wahl、Klaus Ruhland
DOI:10.1021/om200849n
日期:2012.1.23
A detailed study of the influence of electronic and steric characteristics of cinnamic acid esters on the spectroscopic, kinetic, and thermodynamic properties of bis(triphenylphosphine)palladium(0) cinnamic acid ester complexes is presented (51 different new complexes included). These complexes show a dynamic behavior on the NMR spectroscopic time scale. Therefore, the rotational barriers of the olefin
本文详细介绍了肉桂酸酯的电子和空间特性对双(三苯基膦)钯(0)肉桂酸酯配合物(包括51种不同的新配合物)的光谱,动力学和热力学性质的影响。这些络合物在NMR光谱时间尺度上显示出动态行为。因此,可以确定烯烃围绕金属-烯烃键的旋转势垒以及烯烃的离解熵和焓以及离解机理。这些发现与NMR光谱,IR光谱和X射线结构数据(包括7个新结构)一起通过Hammett图解释了有关不同烯烃配体对复杂性质的影响。