Divalent transition metal(II) complexes of two heterocyclic ligands with pendant pyridinyl groups: Synthesis, characterization and electrochemistry
Divalent transition metal(II) complexes of two heterocyclic ligands with pendant pyridinyl groups: Synthesis, characterization and electrochemistry
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DOI：
10.1016/j.poly.2013.11.032
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发表时间：
2014-02
期刊：
影响因子：
2.6
通讯作者：
Zhenhong Wei;Yan Peng;D. Hughes;Jia Zhao;Lingman Huang;Xiaoming Liu
中科院分区：
文献类型：
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作者：
Zhenhong Wei;Yan Peng;D. Hughes;Jia Zhao;Lingman Huang;Xiaoming Liu
五齿大环配体4-（吡啶-2-甲基）-1,7-二硫-4,10-二氮杂环十二烷，L和六齿大环配体4,10-二（吡啶-2-甲基）-1,7-二硫-4,10-二氮杂环十二烷，L ‘，用一个相当于M2+金属盐（M = Co, Ni, Cu）在甲醇中处理得到六个单核配合物，[CoL(MeCN)](ClO4)2(1), [NiL(H2O)]Cl2(2), [CuL(MeCN)](ClO4)2(3)和[ML ’](ClO4)2（4 - 6）。用x射线单晶衍射分析确定了它们的固态晶体结构。在配合物1 - 3中，金属中心表现出轻微扭曲的八面体几何形状，这是由于配合物1和3中的三个氮和两个给硫原子在一个溶剂分子中（配合物1和3为MeCN，配合物2为水），而在配合物4 - 6中，金属中心周围的配位是由配体l '中的四个氮和两个硫原子满足的。报道了这些配合物的电子谱和电化学性质。
Treatment of the pentadentate macrocyclic ligand 4-(pyridin-2-ylmethyl)-1,7-dithia-4,10-diazacyclododecane,L, and the hexadentate macrocyclic ligand 4,10-bis(pyridin-2-ylmethyl)-1,7-dithia-4,10-diazacyclododecane,L′, with one equivalent of a M2+metal salt (M = Co, Ni, Cu) in methanol yielded six mononuclear complexes, [CoL(MeCN)](ClO4)2(1), [NiL(H2O)]Cl2(2), [CuL(MeCN)](ClO4)2(3) and [ML′](ClO4)2(4–6). Their solid state crystal structures were determined using X-ray single crystal diffraction analysis. In complexes1–3, the metal centres exhibit a slightly distorted octahedral geometry, resulting from the coordination of three nitrogen and two sulfur donating atoms in the ligandLand one solvent molecule (MeCN for complexes1and3, water for complex2) whereas in complexes4–6, the coordination around the metal centres was satisfied by four nitrogen and two sulfur atoms from the ligandL′. The electronic spectra and electrochemistry of these complexes are reported.