Synthesis and Characterization of Novel Group 16 Element Compounds with Oxidation State IV or VI Having Carbon Ligands

本文报道：1)系统合成了芳基对位上带有取代基的高价四芳基碲（IV）化合物，并首次发现了Te（IV）化合物的SP结构；2)新制备的有机碲鎓盐在溶液中以较重的主族元素同系物和类似物代替晶紫的中心碳原子呈现蓝绿色；3)以（4-溴苯基）五苯基碲（VI）为原料，研究了六有机碲（VI）的功能化反应。对溴化合物进行功能化反应，得到围绕Te（VI）具有八面体结构的交偶产物。

We report here, 1) the systematic synthesis hypervalent tetraaryltellurium(IV) compounds bearing substituents at the para position of the aryl rings, and the first SP structure of Te(IV) compound was found; 2) Newly prepared organotelluronium salts showed green-blue color in solution as the heavier main group element homologue and analogue instead of the central carbon atom of Crystal Violet; 3) Functionalization reactions of hexaorganotelluriums(VI) were investigated using (4-bromophenyl)pentaphenyltellurium(VI) which was prepared form the reaction of pentaphenyltellurium cation with 4-bromophenyl lithium. Functionalization reactions of the bromo-compound were proceeded to give useful cross-coupling products having octahedral structure around Te(VI).