Comparative Analysis of the Donor Properties of Isomeric Pyrrolyl Phosphine Ligands
作者:Vicky A. Osenga、Nolan C. Sykes、Sopheak Pa、Michael K. Bambha、Nathan D. Schley、Miles W. Johnson
DOI:10.1021/acs.organomet.3c00467
日期:2024.1.8
platinum, and gold complexes as well as selenide derivatives of these ligands are examined using NMR and IR spectroscopy, X-ray crystallography, and cyclic voltammetry. Ligand L2 exhibits net donor properties similar to those of the o-tolyl analogue L3, while L1 shows attenuated electron donation ability. Additionally, a model nickel-catalyzed Kumada coupling reaction using these three ligands was investigated
了解吡咯基膦的净供体和电子特性对于指导其作为配体的使用至关重要。在本研究中,我们比较了两种异构体 1- 和 2-(二苯基膦)甲基吡咯(分别为L1和L2 ),以确定N- (膦基)吡咯与芳基膦和 2-吡咯基膦的不同程度。使用核磁共振和红外光谱、X 射线晶体学和循环伏安法检查钌、铑、铂和金络合物以及这些配体的硒化物衍生物。配体L2表现出与邻甲苯基类似物L3类似的净供体特性,而L1显示减弱的电子供体能力。此外,还研究了使用这三种配体的镍催化 Kumada 偶联反应模型。