Synthesis, Structure and Properties of a Mononuclear and an End‐On Double Azido‐Bridged Copper(
<scp>II</scp>
) Complex Incorporating an N,N,N,O‐Coordinating Tripodal Ligand
作者:Sumana Sarkar、Amrita Mondal、Joan Ribas、M. G. B. Drew、Kausikisankar Pramanik、Kajal Krishna Rajak
DOI:10.1002/ejic.200400493
日期:2004.12
The blue coloured complex [Cu(HL)(H2O)(ClO4)]ClO.H2O.MeOH (1.H2O.MeOH) has been synthesised in excellent yields by reacting Cu(ClO4)(2).6H(2)O with N,N-bis(2-methylpyridyl)(3,5-dimethyl-2-hydroxybenzyl)amine (HL) in methanol. The same reaction, when carried out in the presence of sodium azide, afforded a dark-blue complex of formula [Cu-2(HL)(2)(mu-1,1-N-3)(2)](ClO4)(2) (2). The crystal and molecular
蓝色络合物 [Cu(HL)(H2O)(ClO4)]ClO.H2O.MeOH (1.H2O.MeOH) 通过 Cu(ClO4)(2).6H(2)O 与N,N-双(2-甲基吡啶基)(3,5-二甲基-2-羟基苄基)胺(HL)的甲醇溶液。在叠氮化钠存在下进行相同的反应时,得到深蓝色配合物 [Cu-2(HL)(2)(mu-1,1-N-3)(2)](ClO4) (2) (2)。已解决了配合物的晶体和分子结构。2-300 K 范围内的变温磁化率数据 2 揭示了通过末端叠氮基连接器存在反铁磁相互作用。使用 Bleaney-Bowers 表达式拟合 2 的温度依赖性敏感性研究,这导致参数 J = -3.2 cm(-1)、g = 2.12 和 R = 2.14 x 10(-4)。(C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim,