spectroscopy. The molecular structures of [Pt(2-Te-C5H4N)2Te(PPh3)] (2a) and [Pt2-Te-C5H3(Me)N}2Te(PPh3)] (2b) were established by single crystal X-ray diffraction. Both complexes exhibit a distorted square-planar configuration at the platinum(II) centers. The two mutually trans positioned 2-pyridinetellurolate ligands [2-Te-C5H3(R)N] coordinate to the central platinum atom in a monodentate fashion
用[Pt(PPh 3)4 ]处理二
碲化物[Te 2 C 5 H 3 N(R)-3} 2 ](R = H或Me)的
甲苯溶液产生两种类型的络合物,[Pt 2 -Te-3-(R)C 5 H 3 N} 2(PPh 3)2 ](1a - d)作为主要产品,[Pt 2-Te-3-(R)C 5 H 3 N} 2 Te(PPh 3)](2a - d)为次要产品。上述配合物也可以通过[PtCl 2(PR'3)2 ](PR' 3 = PPH 3或PPH 2(2-C 5 H ^ 4 N))与2当量的Na(2-TE-C 5 H ^ 3 R)。通过元素分析和UV-vis,NMR(1 H和31 P)和(部分)XPS光谱对复合物进行了表征。[Pt(2-Te-C 5 H 4 N)2 Te(PPh 3)](2a)和[Pt 2-Te-C 5 H 3(Me)N} 2 Te(PPh 3)的分子结构](2b通过单晶X射线衍