Hypervalent Organoselenium(II) Compounds with Organophosphorus Ligands. Crystal and Molecular Structure of [2-(iPr2NCH2)C6H4]Se[S2PR′2] (R′ = Ph, OiPr)
作者:Elise Duhamel、Alpar Pöllnitz、Adina Stegarescu、Anca Silvestru
DOI:10.1002/zaac.201100165
日期:2011.8
type [R′2P(S)S]2 (R = Ph, OiPr) resulted in the hypervalent [2-(R2NCH2)C6H4]SeSP(S)R′2 [R = Et, R′ = Ph (1), OiPr (2); R = iPr, R′ = Ph (3), OiPr (4)] species. All new compounds were characterized by solution multinuclear NMR spectroscopy (1H, 13C, 31P, 77Se) and the solid compounds 1, 3, and 4 also by FT-IR spectroscopy. The crystal and molecular structures of 3 and 4 were determined by single-crystal
[2-(R2NCH2)C6H4]2Se2 [R = Et, iPr] 型二有机二硒化物与 [R'2P(S)S]2 型双(二有机膦硫酰基二硫烷)(R = Ph,OiPr)之间的再分配反应导致高价[2-(R2NCH2)C6H4]SeSP(S)R'2 [R = Et, R' = Ph (1), OiPr (2); R = iPr, R' = Ph (3), OiPr (4)]所有新化合物均通过溶液多核 NMR 光谱(1H、13C、31P、77Se)表征,固体化合物 1、3 和 4 也通过 FT-IR 光谱表征。3 和 4 的晶体和分子结构由下式确定单晶 X 射线衍射。在这两种化合物中,N(1) 原子与硒原子进行分子内配位,导致 (C,N)SeS 型的 T 形配位排列。二硫代有机磷配体在两种配合物中均作用为单齿,它可以被描述为基本上单体的物种。在3的晶体中可以考虑弱分子间S…H接触,从而分别导致R和S异构体的聚合锯齿形链。