Synthesis,structure, spectroscopic and magnetic properties of a novel two-dimensional copper(II) complex Na2[Cu(pba)] · 6H2O [pba = 1,3-propylenebis(oxamato)] |
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Authors: | Wang Qing-Lun Zhao Bin Liao Dai-Zheng Yan Shi-Ping Cheng Peng Jiang Zong-Hui |
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Institution: | (1) Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China;(2) State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P.R. China |
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Abstract: | The copper(II) complex Na2Cu(pba)] · 6H2O has been synthesized and its structure determined. It consists of a novel two-dimensional network of Cu(pba)]2– anions connected to each other through the sodium ion as a bridge. Spectroscopic and magnetic properties have been measured and a spin distribution calculation has been carried out with the GAUSSIAN-94. Theoretical calculations indicate the rather larger spin density on nitrogen atoms should be responsible for the satellite lines appearing beside the main hyperfine coupling signs of copper(II). The antiferromagnetic interaction may be due to the intermolecular interaction and/or different copper(II) ions through the Na+ bridge in the same layer. |
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