Heteronuclear Complexes of Macrocyclic Oxamide with Co-ligands: Syntheses, Crystal Structures, and Magnetic Properties
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- 作者：Li-Na Zhu ; Na Xu ; Wei Zhang ; Dai-Zheng Liao ; Kazuyoshi Yoshimura ; Ko Mibu ; Zong-Hui Jiang ; Shi-Ping Yan ; Peng Cheng
- 刊名：Inorganic Chemistry
- 出版年：2007
- 出版时间：February 19, 2007
- 年：2007
- 卷：46
- 期：4
- 页码：1297 - 1304
- 全文大小：252K
- 年卷期：v.46,no.4(February 19, 2007)
- ISSN：1520-510X
文摘
Four heteronuclear complexes Mn(CuL)2(SCN)2 (1), {[Mn(CuL)2(
-dca)2]·2H2O}n (2), Zn(CuL)2(SCN)2 (3), and [Fe(CuL)(N3)2]2 (4) incorporating macrocyclic oxamide ligands have been synthesized and structurally characterized.L is the dianion of diethyl 5,6,7,8,15,16-hexahydro-6,7-dioxodibenzo[1,4,8,11]-tetraazacyclotetradecine-13,18-dicarboxylate, and dca is the dicyanamide. The structure of 1 or 3 consists of oxamido-bridged trinuclear [MIICuII2]molecules (for 1, M is the manganese(II) ion, and for 3, M is the zinc(II) ion). Both of them consist of 1D supramolecuarchains via 
- interactions. The structure of 2 also has the oxamido-bridged trinuclear [MnIICuII2] structure unitsand consists of 2D layers formed by the linkage of copper(II) and manganese(II) atoms via the oxamido and 1,5-dca bridges. Complex 4 consists of oxamido-bridged tetranuclear [FeII2CuII2] molecules and arranges in 1D chains.Different co-ligands may result in different structures in this macrocyclic oxamide system. The variable-temperaturemagnetic susceptibility measurements (2-300 K) of 1 and 2 both show the pronounced antiferromagnetic interactionsbetween the copper(II) and manganese(II) ions.
-dca)2]·2H2O}n (2), Zn(CuL)2(SCN)2 (3), and [Fe(CuL)(N3)2]2 (4) incorporating macrocyclic oxamide ligands have been synthesized and structurally characterized.L is the dianion of diethyl 5,6,7,8,15,16-hexahydro-6,7-dioxodibenzo[1,4,8,11]-tetraazacyclotetradecine-13,18-dicarboxylate, and dca is the dicyanamide. The structure of 1 or 3 consists of oxamido-bridged trinuclear [MIICuII2]molecules (for 1, M is the manganese(II) ion, and for 3, M is the zinc(II) ion). Both of them consist of 1D supramolecuarchains via - interactions. The structure of 2 also has the oxamido-bridged trinuclear [MnIICuII2] structure unitsand consists of 2D layers formed by the linkage of copper(II) and manganese(II) atoms via the oxamido and 1,5-dca bridges. Complex 4 consists of oxamido-bridged tetranuclear [FeII2CuII2] molecules and arranges in 1D chains.Different co-ligands may result in different structures in this macrocyclic oxamide system. The variable-temperaturemagnetic susceptibility measurements (2-300 K) of 1 and 2 both show the pronounced antiferromagnetic interactionsbetween the copper(II) and manganese(II) ions.