Organometallic coordination polymers: Sn(IV) derivatives with the bis(triazolyl)methane ligand
作者:Norberto Masciocchi、Claudio Pettinari、Riccardo Pettinari、Corrado Di Nicola、Alessandro Figini Albisetti
DOI:10.1016/j.ica.2010.05.031
日期:2010.11
metal stereochemistry), in one-dimensional chains packed in parallel bundles. The main geometrical features of these 1D polymers are compared with those of the bis(imidazolyl)methane complexes and of the known Btm derivative, Btm(Ph 2 SnBr 2 ). Interestingly, the expected isomorphous structures for selected couples was not found, as if very subtle energetic differences were driving the crystallization
几种通式为SnR n X 4-n(n = 0–2; R = Me,Et,n Bu,t Bu,Ph; X = Cl,Br)的烷基或芳基锡(IV)卤化物,具有路易斯酸性特征,已与多齿N供体配体双(1,2,4-三唑基)甲烷(Btm)反应,得到Btm(SnR n Cl 4-n)配合物。还报道了(Btm)2 Sn n Bu 2 Br 2和(Btm)Sn n Bu 2(NO 3)2。这些材料通过元素分析,IR和1 H(在某些情况下为119 Sn)NMR光谱进行表征,并且有可能从头进行X射线粉末衍射法。通过后一种方法测定的晶体结构表明,Btm配体以明显的方式连接一维链中相距9.5-11.2 A(取决于Btm构象和局部金属立体化学)的Sn(IV)片段。打包成平行捆装。将这些一维聚合物的主要几何特征与双(咪唑基)甲烷络合物以及已知的Btm衍生物Btm(Ph 2 SnBr 2)的几何特征进行了比较。有趣的是,