Unprecedented formation of selenido-bridged tri-nuclear palladium(II) and platinum(II) complexes, [M<sub>3</sub>(μ<sub>3</sub>-Se)<sub>2</sub>(P<sup>∩</sup>P)<sub>3</sub>]<sup>2+</sup>, via C–Se bond cleavage
Unprecedented formation of selenido-bridged tri-nuclear palladium(II) and platinum(II) complexes, [M<sub>3</sub>(μ<sub>3</sub>-Se)<sub>2</sub>(P<sup>∩</sup>P)<sub>3</sub>]<sup>2+</sup>, via C–Se bond cleavage
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DOI：
10.1016/j.poly.2006.05.026
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发表时间：
2006-11-13
期刊：
影响因子：
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通讯作者：
Ray J. Butcher
中科院分区：
文献类型：
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作者：
Liladhar B. Kumbhare;Vimal K. Jain;Ray J. Butcher
[M（SeCOC 6 H4 Me-4）2（P P）]与MCl 2（P P）在NaBPh 4存在下于二氯甲烷-甲醇混合溶剂中反应得到硒桥三核配合物[M3（μ3-Se）2（P P）3][BPh 4]2（M3 =Pd3，Pt3，Pd2Pt，PdPt2; P=dppm，dppe，dppp，（P n Pr 3）2）通过硒代羧酸的C-Se键的前所未有的裂解形成。通过紫外-可见光谱和核磁共振（~ 1H，~（31）P，~（77）Se，~（195）Pt）谱对配合物进行了表征。[Pd 3（μ3-Se）2（dppe）3][BPh 4]2的晶体结构由X射线衍射确定。每个钯原子周围的几何形状是近似正方形平面，其中两个P原子来自螯合dppe和两个Se原子限定配位球。
Reaction of [M(SeCOC6H4Me-4)2(P∩P)] with MCl2(P∩P) in the presence of NaBPh4 in dichloromethane–methanol mixture afforded selenido-bridged tri-nuclear complexes [M3(μ3-Se)2(P∩P)3][BPh4]2 (M3 =Pd3, Pt3, Pd2Pt, PdPt2; P∩P=dppm, dppe, dppp, (P n Pr3)2) formed via unprecedented cleavage of C–Se linkage of selenocarboxylate. These complexes were characterized by UV–Vis and NMR (1H, 31P, 77Se, 195Pt) spectroscopy. The structure of [Pd3(μ3-Se)2(dppe)3][BPh4]2 was established by X-ray crystallography. The geometry around each palladium atom is approximately square planar with two P atoms from the chelating dppe and two Se atoms defining the coordination sphere.