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Issue 1, 2009
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Open and closed copper chain coordination polymers with alternating ferromagnetic and antiferromagnetic interactions

Ming-Li Liu,a  Wei Shi,a  Hai-Bin Song,a  Peng Cheng,*a  Dai-Zheng Liaoa  and  Shi-Ping Yana 
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* Corresponding authors

a Department of Chemistry, Nankai University, People's Republic of China, Tianjin
E-mail: pcheng@nankai.edu.cn
Fax: +86-22-23502458
Tel: +86-22-23505207

Abstract

Two copper(II) coordination polymers formulated {[Cu3(HL)2(MeOH)2(H2O)2]·2H2O}n (1) and {[Cu4(L)2(H2O)8]·5H2O}n (2) were obtained utilizing the polycarboxylate ligand 2-(bis(carboxymethyl)amino)terephthalic acid (H4L) and characterized by X-ray diffraction, FT-IR spectra, elemental analysis and EPR spectra. 1 crystallizes in P21/c space group and shows a closed 1D double zigzag chain composed of trinuclear building block [Cu3(HL)2(H2O)4]. 2 crystallizes in a chiral space groupP21 and exhibits an open chain structure with tetranuclear building block [Cu4(L)2(H2O)8]. Fitting the variable-temperature magnetic susceptibilities of two compounds gave g = 2.16, J = 4.25 cm−1, zJ′ = −0.88 cm−1 for 1, and g = 2.13, J1 = −2.61 cm−1, J2 = 2.97 cm−1, zJ′ = −0.12 cm−1 for 2, respectively, indicating the alternating ferromagnetic and antiferromagnetic interactions.

Graphical abstract: Open and closed copper chain coordination polymers with alternating ferromagnetic and antiferromagnetic interactions

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Publication details

The article was received on 15 Sep 2008, accepted on 16 Sep 2008 and first published on 08 Oct 2008


Article type: Paper
DOI: 10.1039/B816161P
Citation: CrystEngComm, 2009,11, 102-108
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    Open and closed copper chain coordination polymers with alternating ferromagnetic and antiferromagnetic interactions

    M. Liu, W. Shi, H. Song, P. Cheng, D. Liao and S. Yan, CrystEngComm, 2009, 11, 102
    DOI: 10.1039/B816161P

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