【摘要】 标题化合物[(mtan)Zn(OH2)](ClO4)2 (1) (mtan = 5-甲基-1,5,9-三氮杂壬烷) 是在pH < 7 的乙腈水溶液中制取的,而在11 > pH 7的条件下,配合物1中的水分子配体很容易电离出质子,形成二聚体[(mtan)Zn(m-OH)Zn(mtan)](ClO4)3 (2)的产率很高。在13.5 > pH 11的范围内,溶液中就会产生 [(mtan)Zn(m-O)Zn(mtan)](ClO4)2 (3),X-射线单晶结构分析表明,化合物(2)由[(mtan)Zn(m-OH)Zn(mtan)]3+和三个ClO4-组成,晶体参数:单斜晶系空间群P2(1)/m,a轴 7.802(2), b轴 12.121(3),c轴 15.662(3) 牛琤 104.29(2)o,V 1435.3(6) 3。Zn(II)呈现稍微扭曲的四面体配位环境。更多还原

【Abstract】 The title complexes, [(mtan)Zn(OH2)](ClO4)2 (1) (mtan = 5-methyl-1,5,9-triazanonane) was prepared in aqua acetonitrile solution of pH < 7. One of the hydrogen atoms in the coordinated water molecule in (1)is very easy to dissociate in 11 > pH 7, forming the dimmer, [(mtan)Zn(m-OH)Zn(mtan)](ClO4)3 (2)in high yield. In the range of 13.5 > pH 11, dianion O-bridged compound [(mtan)Zn(m-O)Zn(mtan)](ClO4)2 (3) was isolated. X-ray single crystal structure determination reveals that (2)consists of a hydroxyl-bridged dinuclear cation and three perchlorate anions. The complex crystallizes in monoclinic space group P2(1)/m with a 7.802(2), b 12.121(3), c 15.662(3) ? b 104.29(2)o, V 1435.3(6) ?. The coordination geometry at each zinc(II) atom is a slightly distorted tetrahedron.更多还原