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题名: Two novel heterometallic Cu-II-Sr-II coordination polymers based on3,5-pyrazoledicarboxylic acid: synthesis, crystal structures andmagnetic properties
作者: Chen, Yanmei ;  Zheng, Lina ;  She, Shixiong ;  Li, Yahong
刊名: DALTON TRANSACTIONS
出版日期: 2011
卷号: 40, 期号:18, 页码:970-4975
英文摘要: The syntheses, crystal structures and magnetic properties are described for two novel 2D heterometallic Cu-II-Sr-II coordination polymers {Sr(H2O)(6)[(Im)(4)Cu-4(pdc)(4)Sr(H2O)(4)]center dot 6H(2)O}(n) (1) and [Cu-2(H2O)(2)(pdc)(2)Sr(H2O)(3)](n) (2) (H(3)pdc = 3,5-pyrazoledicarboxylic acid; Im = imidazole). The 1 : 1 : 1 : 5 reaction of SrCl2 center dot 6H(2)O, Cu(NO3)(2)center dot 3H(2)O, H(3)pdc and imidazole in H2O-EtOH at 120 degrees C under autogenous pressure gave 1. Complex 2 was obtained from the 1 : 1 : 1 H(3)pdc/Sr(OH)(2)center dot 8H(2)O/Cu(NO3)(2)center dot 3H(2)O reaction mixture in H2O-EtOH under solvothermal conditions. Complex 1 can be described as a 2D grid-shaped network with the four Cu-II ions in a saddle-like conformation. In complex 2, Sr-II ions link metalloligands [Cu-2(pdc)(2)(H2O)(2)](2-) to generate a 2D layer framework. Variable-temperature solid-state dc magnetic susceptibility studies have been performed in the temperature range 2.0-300 K for complexes 1 and 2. Antiferromagnetic Cu-II ... Cu-II exchange interactions were found for both 1 and 2. The syntheses, crystal structures and magnetic properties are described for two novel 2D heterometallic Cu-II-Sr-II coordination polymers {Sr(H2O)(6)[(Im)(4)Cu-4(pdc)(4)Sr(H2O)(4)]center dot 6H(2)O}(n) (1) and [Cu-2(H2O)(2)(pdc)(2)Sr(H2O)(3)](n) (2) (H(3)pdc = 3,5-pyrazoledicarboxylic acid; Im = imidazole). The 1 : 1 : 1 : 5 reaction of SrCl2 center dot 6H(2)O, Cu(NO3)(2)center dot 3H(2)O, H(3)pdc and imidazole in H2O-EtOH at 120 degrees C under autogenous pressure gave 1. Complex 2 was obtained from the 1 : 1 : 1 H(3)pdc/Sr(OH)(2)center dot 8H(2)O/Cu(NO3)(2)center dot 3H(2)O reaction mixture in H2O-EtOH under solvothermal conditions. Complex 1 can be described as a 2D grid-shaped network with the four Cu-II ions in a saddle-like conformation. In complex 2, Sr-II ions link metalloligands [Cu-2(pdc)(2)(H2O)(2)](2-) to generate a 2D layer framework. Variable-temperature solid-state dc magnetic susceptibility studies have been performed in the temperature range 2.0-300 K for complexes 1 and 2. Antiferromagnetic Cu-II ... Cu-II exchange interactions were found for both 1 and 2.
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1892
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Chen, Yanmei,Zheng, Lina,She, Shixiong,et al. Two novel heterometallic Cu-II-Sr-II coordination polymers based on3,5-pyrazoledicarboxylic acid: synthesis, crystal structures andmagnetic properties[J]. DALTON TRANSACTIONS,2011,40(18):970-4975.
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