Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
作者:Norbani Abdullah、Zainudin Arifin、Edward R. T. Tiekink、Naima Sharmin、Nur Syamimi Ahmad Tajidi、Siti Amira Mat Hussin
DOI:10.1080/00958972.2016.1147032
日期:2016.3.3
[Cu(p–HOC6H4COO)2(cyclam)] (1), and two ionic mononuclear complexes, [Cu(cyclam)(H2O)2](p–CH3OC6H4COO)2 (2) and [Cu(cyclam)(H2O)2](p–CH3(CH2)15OC6H4COO)2·H2O (3), were formed from reaction of cyclam with [Cu2(p–HOC6H4COO)4(H2O)2], [Cu2(p–CH3OC6H4COO)4(H2O)2] and [Cu2(p-CH3(CH2)15OC6H4COO)4(H2O)2], respectively. These complexes were isolated as purple crystals with molecular structures showing distorted
摘要 一种共价单核配合物 [Cu(p-HOC6H4COO)2(cyclam)] (1) 和两种离子单核配合物 [Cu(cyclam)(H2O)2](p-CH3OC6H4COO)2 (2) 和 [Cu (cyclam)(H2O)2](p–CH3(CH2)15OC6H4COO)2·H2O (3),由 cyclam 与 [Cu2(p–HOC6H4COO)4(H2O)2]、[Cu2(p– CH3OC6H4COO)4(H2O)2] 和 [Cu2(p-CH3(CH2)15OC6H4COO)4(H2O)2]。这些配合物被分离为紫色晶体,其分子结构显示出扭曲的八面体 N4O2 几何形状。配合物 1 和 2 不可逆地还原为 Cu(I) 并氧化为 Cu(III),而配合物 3 不具有氧化还原活性。配合物 2 与 N-(十六烷基)异烟酰胺 (L) 反应形成 [Cu(cyclam)(L)2](p–CH3OC6H4COO)2