Issue 1, 2009

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

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

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2008
Accepted
16 Sep 2008
First published
08 Oct 2008

CrystEngComm, 2009,11, 102-108

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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