Structure and magnetic properties of a novel heterospin 1-D chain complex containing both Cu(II) and nitroxide radicals as spin branches
Structure and magnetic properties of a novel heterospin 1-D chain complex containing both Cu(II) and nitroxide radicals as spin branches
复制标题
DOI：
10.1007/s11426-009-0202-0
复制
发表时间：
2009-09
影响因子：
9.6
通讯作者：
Yue Ma;Xiao-ping Chen;D. Cao;Shi‐Ping Yan;D. Liao
中科院分区：
文献类型：
--
作者：
Yue Ma;Xiao-ping Chen;D. Cao;Shi‐Ping Yan;D. Liao
合成了一种新型含Cu（II）和硝基自由基配体的异旋一维（1- d）链配合物{[Cu(tcph)(H2O)4][Cu(tcph)(NIT3Py)2]·2H2O}n(1) （H2tcph =四氯邻苯二甲酸，NIT3Py = 2-（3′-吡啶基）-4,4,5,5-四甲基-咪唑啉-1-氧基-3-氧化物）。该结构由中性铜（II）离子链组成，由tcph桥接，并由氮氧自由基作为自旋支和溶剂化水作为共配体交替配位。利用基于种群分析的近似理论模型对磁性数据进行拟合，得到jcu2 - rad = 22.4 cm−1和jcu1 -Cu2=−2.4 cm−1的耦合参数值，表明Cu（II）与NIT3Py之间存在分子内铁磁相互作用，Cu1与Cu2之间存在由tcph连接的弱反铁磁相互作用。
A novel heterospin one-dimensional (1-D) chain complex containing both Cu(II) and nitroxide radical ligands, {[Cu(tcph)(H2O)4][Cu(tcph)(NIT3Py)2]·2H2O}n(1) (H2tcph = tetrachloro-phthalic acid, NIT3Py = 2-(3′-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide), has been synthesized and structurally characterized. The structure consists of neutral chains of copper(II) ions bridged by tcph and coordinated alternatively by nitroxide radicals as spin branches and solvated water as co-ligand. The magnetic data were fitted using an approximate theoretical model based on population analysis to obtain the coupling parameter values ofJCu2-Rad= 22.4 cm−1andJ′Cu1-Cu2= −2.4 cm−1, indicating the intramolecular ferromagnetic interaction between Cu(II) and NIT3Py and weak antiferromagnetic interaction between Cu1 and Cu2 linked by tcph.