Hypercoordinated triorganotellurium(IV) derivatives of chalcogen-centred organophosphorus ligands
作者:Eleonora Denes、Anca Beleagă、Anca Silvestru
DOI:10.1016/j.ica.2020.119841
日期:2020.10
Abstract Triorganotelluronium complexes of type [2-(Me2NCH2)C6H4}nPh3-nTe]L [(L = S2PMe2, n = 3 (1), 1 (2); L = (EPPh2)2N, E = S, n = 3 (3); E = Se, n = 3 (4), 2 (5), 1 (6) and L = (SPPh2)(O2SC6H4CH3-4)N, n = 3 (7), 2 (8), 1 (9)] were obtained by salt metathesis reactions between triaryltelluronium halides of type [2-(Me2NCH2)C6H4}nPh3-nTe]X (X = Cl, Br) and the alkali metal salt of the corresponding
单晶X射线衍射研究表明,化合物2、4、6和7中N→Te分子间的相互作用很强,从而导致配体几何形状不同的超配位的三有机碲金属(IV)阳离子。进一步的次级键相互作用(S⋅⋅⋅Te在2中和Se⋅⋅⋅Te在6中)导致阳离子-阴离子缔合,而阳离子与阴离子之间的H⋅⋅⋅E(E = S,Se)接触导致不同的超分子2、4和6中的网络,以及7中离散的阳离子-阴离子对。