Electron spin resonance studies and crystal structures of copper(<scp>II</scp>) complexes of some 12-, 13- and 14-membered oxatriaza macrocycles
作者:Vitor Félix、Rita Delgado、M. Teresa S. Amorim、Sílvia Chaves、Adelino M. Galvão、M. Teresa Duarte、Maria A. A. F. de C. T. Carrondo、Isabel Moura、João J. R. Fraústo da Silva
DOI:10.1039/dt9940003099
日期:——
single-crystal X-ray diffraction analyses of copper(II) complexes of the following oxatriaza macrocycles have been undertaken: 1-oxa-4,7,10-triazacyclododecane (L1), 4,7,10-trimethyl-1-oxa-4,7,10-triazacyclododecane (L2), 1-oxa-4,7,11-triazacyclotridecane (L3), 1-oxa-4,8,12-triazacyclotetradecane (L4) and 4,8,12-trimethyl-1-oxa-4,8,12-triazacyclotetradecane (L5). The complexes for solution studies were prepared
进行了以下草酸氧杂环化合物大环铜(II)配合物的水溶液和单晶X射线衍射分析的电子和ESR光谱研究:1-oxa-4,7,10-三氮杂环十二烷(L 1),4, 7,10-三甲基-1-氧杂-4,7,10-三氮杂(L 2),1-氧杂4,7,11-triazacyclotridecane(L 3),1-氧杂-4,8,12- triazacyclotetradecane( L 4)和4,8,12-三甲基-1-氧杂-4,8,12-三氮杂环十四烷(L 5)。在过量的次氯酸钠的制备用于溶液研究的络合物4,但膨松抗衡离子PF 6 -的溶液中加入以诱导结晶。[CuL 1的晶体结构(Br)] [PF 6 ],[CuL 2(Cl)] [PF 6 ],[CuL 4 H 2 O)] [PF 6 ] 2 ·H 2 O和[CuL 5(Cl)] [PF 6 ]被确定。四个配合物中铜原子周围的配位几何可描述为扭曲的方形金字塔,