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A novel tetranuclear lanthanide(III)-copper(II) complex of the macrocyclic oxamide [PrCu3] (macrocyclic oxamide = 1,4,8,11-tetraazacyclotradecanne-2,3-dione): synthesis, structure and magnetism |
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| Authors: | Jin-Kui Tang Shu-Feng Si Dai-Zheng Liao Zong-Hui Jiang Shi-Ping Yan |
| Affiliation: | a Department of Chemistry, Nankai University, Tianjin 300071, PR China b State Key Laboratory of Structural Chemistry, Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, PR China c State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, PR China |
| Abstract: | A novel tetranuclear lanthanide(III)-copper(II) complex of macrocyclic oxamide, [Pr(CuL)3(H2O)2](SCN)3 · 1.5H2O (L = 1,4,8,11-tatraazacyclotradecanne-2,3-dione) (1), has been synthesized, structurally characterized and preliminary investigated by magnetic studies. The structure of the title complex consists of a cationic PrCu3 core, noncoordinated monovalent SCN− anions and H2O molecules; the packing diagram shows open channels formed through intermolecular weak interactions. The temperature-dependent magnetic susceptibilities were analyzed by an approximate treatment being enlightened by Matsumoto et al. leading to J = −1.62 × 10−2 cm−1, Δ = 3.12 cm−1, gCu = 2.13, respectively. |
| Keywords: | Tetranuclear lanthanide(III)-copper(II) complex Macrocyclic oxamide Crystal structure Magnetism |
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