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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Polytypic phase transition in alkyl chain-functionalized valence tautomeric complexes
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Polytypic phase transition in alkyl chain-functionalized valence tautomeric complexes

机译:烷基链官能化价互变异构复合物中的多型相变

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摘要

A novel series of valence tautomeric (VT) complexes, [Co(Cnbpy)(3,5-DTBQ)(2)] (Cnbpy = 4,4'-dialkyl-2,2'-bipyridine (alkyl = (CnH2n+1) where n = 0 (CoCObpy), 1 (CoC1bpy), 5 (CoC5bp), 9 (CoC9bpy) and 13 (CoC13bpy); 3,5-DTBQ = 315-di-tert-butylsemiquinonate or catecholate), including two previously reported complexes (CoCObpy and CoC1bpy), were systematically prepared and their properties examined. Introduction of alkyl groups into VT chromophores leads to unexpected variations in the VT process, depending on the lengths of the alkyl chains. An even more interesting observation is that significant polytypic phase transitions with crystallographic symmetry changes accompanying the abrupt VT conversion are induced for the first time in CoC9bpy and CoC13bpy.
机译:一系列新的价互变异构(VT)配合物[Co(Cnbpy)(3,5-DTBQ)(2)](Cnbpy = 4,4'-二烷基-2,2'-联吡啶(烷基=(CnH2n + 1 ),其中n = 0(CoCObpy),1(CoC1bpy),5(CoC5bp),9(CoC9bpy)和13(CoC13bpy); 3,5-DTBQ = 315-二叔丁基半喹啉酸酯或儿茶酚酸酯),包括两个先前报道的系统地制备了配合物(CoCObpy和CoC1bpy)并检查了其性能。将烷基引入VT发色团会导致VT过程发生意想不到的变化,这取决于烷基链的长度。更为有趣的观察是明显的多型相在CoC9bpy和CoC13bpy中首次诱发伴随突然VT转换的具有晶体对称性变化的过渡。

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