期刊
JOURNAL OF COORDINATION CHEMISTRY
卷 68, 期 9, 页码 1644-1654出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2015.1024113
关键词
Squaric acid; Copper; Crystal structure; Redox properties; Magnetism
资金
- National Science Foundation of China [21301194]
- Recruitment Program of Global Youth Experts
- Research Fund for the Doctoral Program of Higher Education of China [20130162120031]
Three new copper(II)-squarate coordination polymers, 1-D double-chain {Cu(C4O4)(H2O)(2)(DMF)}(n) (1) (=dianion of 3,4-dihydroxy-3-cyclobuten-1,2-dione), 3-D network {[Cu(C4O4)(H2O)(2)]0.33H(2)O}(n) (2), and 3-D network {[Cu(C4O4)(H2O)(2)]0.33CH(3)OH}(n) (3), have been synthesized and characterized structurally. The complexes show altered assembly behavior in different solvent systems, which can further affect the physical properties of the frameworks. Cyclic voltammetry experiments show that 1, 2, and 3 have rich redox activities and both Cu(II) ions and squaric acid ligands are involved in redox process. Magnetic characterization on 3 shows the effect of weak antiferromagnetic exchange.
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