The reaction of dimesityl selenide (Mes2Se) with either PdCl2(PhCN)2 in toluene or PdCl2 in tolueneâacetonitrile yields a chloro-bridged binuclear palladium complex, [Pd2Cl2(μ-Cl)2(Mes2Se)2] (1), whereas with Na2PdCl4 in refluxing ethanol, a cyclometallated palladium complex, [Pd2(μ-Cl)2MesSeC6H2(Me2)CH2}2] (2) is afforded. 2 can also be obtained when 1 is refluxed in ethanol. On treatment with Pb(Epy)2 in dichloromethane, 2 afforded the Epy-bridged binuclear complexes, [Pd2(μ-Epy)2MesSeC6H2(Me2)CH2}2] (3; E = S (3a) or Se (3b)). Treatment of 2 with PPh3 yields a bridge-cleaved monomeric complex, [PdClMesSeC6H2(Me2)CH2}(PPh3)]. The molecular structures of 1â3 were established by X-ray diffraction analyses. All the complexes are dimeric, with the palladium atoms acquiring a distorted square planar configuration. There are intra-molecular CâHâ¯Pd interactions (dMâH: 2.75 Ã
and
二甲苯硒化物 (Mes2Se) 与甲苯中的 PdCl2(PhCN)2 或甲苯乙腈中的 PdCl2 反应生成氯桥双核钯络合物,[Pd2Cl2(μ-Cl)2(Mes2Se)2] (1),而在回流乙醇中使用Na2PdCl4,则得到环金属化钯络合物[Pd2(μ-Cl)2MesSeC6H2(Me2)CH2}2] (2)。当1在乙醇中回流时也可以获得2。在二氯甲烷中用 Pb(Epy)2 处理后,2 得到 Epy 桥联双核配合物,[Pd2(μ-Epy)2MesSeC6H2(Me2)CH2}2] (3; E = S (3a) 或 Se (3b) ))。用 PPh3 处理 2 产生桥断单体复合物 [PdClMesSeC6H2(Me2)CH2}(PPh3)]。通过X射线衍射分析确定了1~3的分子结构。所有配合物都是二聚体,钯原子获得扭曲的方形平面构型。 1 中存在分子内 C–H–Pd 相互作用(dM–H:2.75 × 和
Vorlaender; Meyer,F., Justus Liebigs Annalen der Chemie, 1902, vol. 320, p. 138
作者:Vorlaender、Meyer,F.
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日期:——
Gasteiger, Johann; Strauss, Ulrich, Chemische Berichte, 1981, vol. 114, # 6, p. 2336 - 2347
作者:Gasteiger, Johann、Strauss, Ulrich
DOI:——
日期:——
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