Gold(III), Mercury(II), and Palladium(II) Complexes of a Series of Isomeric Bis(mono- and dialkoxyphenyl)pyridines: Introduction of Gold through Transmetalation and Catalysis
作者:Alice Jane McEllin、Christopher A. Goult、Golam Mohiuddin、Liam J. Curtis、Theo F. N. Tanner、Adrian C. Whitwood、Jason M. Lynam、Duncan W. Bruce
DOI:10.1021/acs.inorgchem.3c03791
日期:2024.4.29
characterized by 1H, 13C1H}, and 199Hg NMR spectroscopy as well as, in several cases, by X-ray crystallography. Factors that may explain this unusual reactivity are discussed. In most cases, transmetalation to the related chlorogold(III) complex proceeded smoothly, although lower yields were obtained when starting from doubly mercurated precursors. Prompted by the propensity of these ligands to mercurate
合成并表征了一系列异构双-2,6-(单烷氧基苯基)吡啶和双-2,6-(二烷氧基苯基)吡啶配体。为了制备氯金(III)配合物,首先制备了中间体氯汞(II)配合物,但与之前研究中观察到的结果不同,之前的研究观察到它们是不纯的且最多只能获得中等产率,这里合成了纯配合物,其中许多的产率相当高。根据配体上烷氧基链的取代模式,获得单汞和/或二汞配合物,其特征在于1 H、 13 C 1 H} 和199 Hg NMR 光谱,以及在某些情况下通过 X射线晶体学。讨论了可能解释这种不寻常反应性的因素。在大多数情况下,相关氯金(III)络合物的金属转移反应顺利进行,尽管从双汞化前体开始时产率较低。由于这些配体对汞的倾向,人们尝试进行直接氧化,但都没有成功。然而,可以制备钯(II)的二聚体、邻位金属化络合物,并且也易于金属转移成氯金(III)络合物,从而提供无汞合成。