巢式十一顶铂硼烷簇合物的合成与晶体结构  

Synthesis and Crystal Structure of the nido 11-Vertex Platinaborane Clusters

作　　者：窦建民[1] 武立斌[1] 郭庆良[1] 李大成[1] 王大奇[1] 胡春华[2] 郑培菊[2] 

机构地区：[1]聊城大学化学化工学院,聊城252059 [2]复旦大学分析测试中心,上海200433

出　　处：《化学学报》2005年第12期1087-1094,i003,共9页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.29873009;20371025)资助项目.

摘　　要：[PtCl2(PPh3)2]与B10H12-0在异丙醇中回流反应,得到3个巢式十一顶铂十硼烷簇合物:[(PPh3)2PtB10H11-9-O-i-Pr](1),[(PPh3)2PtB10H10-8,10-(O-i-Pr)2](2)和[(PPh3)2PtB10H11-8-O-i-Pr](3).簇合物1～3都具有PtB10多面体骨架结构,其中Pt原子位于敞开的PtB4面上,且与4个B原子成键,每个Pt原子还与2个PPh3基团中的P原子成键.将溶剂热合成的方法引入到硼簇合物的合成中并进行同一反应,得到2个B10H21-0降解的巢式十一顶双铂九硼烷簇合物:[(PPh3)2(μ-PPh2)Pt2B9H6-3,9,11-(O-i-Pr)3](4)和[(PPh3)2(μ-PPh2)Pt2B9H6-3,9-(O-i-Pr)2-11-Cl](5).簇合物4和5都具有Pt2B9多面体骨架结构,2个Pt原子位于敞开的Pt2B3面上的相邻位置,且由一个PPh2基团桥连,每个Pt原子还与3个B原子和一个PPh3基团中的P原子成键.通过红外光谱、元素分析、X射线单晶衍射对5个簇合物进行了结构表征.Three nido 11-vertex platinaundecaborane clusters: [(PPh3)(2)PtB10H11-9-O-i-Pr] (1), [(PPh3)(2)PtB10H10-8,10-(O-i-Pr)(2)] (2) and [(PPh3)(2)PtB10H11-8-O-i-Pr] (3) were obtained from the reaction of [PtCl2(PPh3)(2)] with (Et4N)(2)B10H10 in i-PrOH under reflux conditions. They all have a nido 11-vertex PtB10 polyhedral skeleton, in which Pt atom lies on the open PtB4 face. Each Pt atom was connected with four B atoms and two P atoms of PPh3 ligand. Two novel B10H102- deboronated nido 11-vertex diplatinaundecaboranes : [(PPh3)(2)(mu-PPh2)Pt2B9H6-3,9,11-(O-i-Pr)(3)] (4) and [(PPh3)(2)(mu-PPh2)Pt2B9H6-3,9-(O-i-Pr)(2)-11-CI] (5) were obtained when the same reaction was carried out under solvothermal conditions. Cluster compounds 4 and 5 have a nido I I-vertex Pt2B9 polyhedral skeleton, in which two Pt atoms stay at neighbouring positions of the open Pt2B3 face and bridged by a PPh2 ligand. Each Pt atom was connected with three B atoms and a P atom of PPh3 ligand. They were characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction.

关 键 词：簇合物 晶体结构 硼烷 X射线单晶衍射 铂 巢 骨架结构 PPH3 溶剂热合成 回流反应 红外光谱 元素分析 结构表征 多面体 原子 Pt 异丙醇 成键 基团 

分 类 号：O627.411[理学—有机化学]