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Electronic and optical properties of new synthesized TTF-based azine derivatives - Experimental and theoretical study

机译:新型合成的基于TTF的嗪衍生物的电子和光学性质-实验和理论研究

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摘要

The synthesis and detailed characterization of two tetrathiafulvalene-appended azine derivatives, namely 2-([2,2'-bi(1,3-dithiolylidene)]-4-yl)-6-((2,4-dimethylphenyl)hydrazono) methyl)pyridine (L1) and 5-([2,2'-bi(1,3-dithiolylidene)]-4-yl)-2-((2,4-dimethylphenyl)hydrazono) methyl)pyridine (L2) are described. The crystal structure of ligand L2 indicates that the mentioned molecule is completely planar with the presence of a strong intramolecular N-1-H-1 center dot center dot center dot N-3 hydrogen bonding. The quantum chemical calculations show that the intermolecular interaction in crystal structure does not affect the HOMO and LUMO orbitals present in isolated molecule. The optical properties of these ligands indicate the presence of intramolecular charge transfer band in the case of ligand L2 while the electrochemical behavior of the two compounds indicates that they are valuable candidates for the construction of crystalline radical cation salts. (C) 2016 Elsevier B.V. All rights reserved.
机译:两种四硫富瓦烯附加的嗪衍生物,即2-([[2,2'-bi(1,3-二硫代亚噻吩基)]-4-基)-6-((2,4-二甲基苯基)hydr]的合成及详细表征甲基)吡啶(L1)和5-([2,2'-双(1,3-二硫代亚噻吩基)]-4-基)-2-基)-2-((2,4-二甲基苯基)肼基)甲基)吡啶(L2)是描述。配体L 2的晶体结构表明,所提及的分子是完全平面的,并且存在强分子内N-1-H-1中心点中心点中心点N-3氢键。量子化学计算表明,晶体结构中的分子间相互作用不会影响分离分子中存在的HOMO和LUMO轨道。这些配体的光学性质表明在配体L2的情况下分子内电荷转移带的存在,而这两种化合物的电化学行为表明它们是构建结晶性阳离子阳离子盐的有价值的候选物。 (C)2016 Elsevier B.V.保留所有权利。

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