Synthesis, Characterization, and Comparative Theoretical Investigation of Dinitrogen-Bridged Group 6-Gold Heterobimetallic Complexes
作者:David Specklin、Anaïs Coffinet、Laure Vendier、Iker del Rosal、Chiara Dinoi、Antoine Simonneau
DOI:10.1021/acs.inorgchem.0c03271
日期:2021.4.19
We have prepared and characterized a series of unprecedented group 6–group 11, N2-bridged, heterobimetallic [ML4(η1-N2)(μ-η1:η1-N2)Au(NHC)]+ complexes (M = Mo, W, L2 = diphosphine) by treatment of trans-[ML4(N2)2] with a cationic gold(I) complex [Au(NHC)]+. The adducts are very labile in solution and in the solid, especially in the case of molybdenum, and decomposition pathways are likely initiated
我们制备并表征了一系列前所未有的第 6 族–第 11 族、N 2桥联、异质双金属 [ML 4 (η 1 -N 2 )(μ-η 1 :η 1 -N 2 )Au(NHC)] +配合物(M = Mo、W、L 2 = 二膦)通过用阳离子金 (I) 络合物 [Au(NHC)] +处理反式-[ML 4 (N 2 ) 2 ]。加合物在溶液和固体中非常不稳定,特别是在钼的情况下,分解途径可能是由电子从零价第 6 族原子转移到金而引发的。光谱和结构参数表明,金加合物与由强主族路易斯酸 (LA) 和低价端接二氮配合物形成的路易斯对非常相似,具有弯曲的 M–N–N– Au 主题。为了验证类比有多远,我们计算了 [W(depe) 2 (η 1 -N 2 )(μ-η 1 :η 1 -N 2 )AuNHC] + ( 10 W + ) 和 [W (depe) 2 (η 1 -N 2 )(μ-η 1 :η 1 -N 2 )B(C