[Cu(H4C3N2S)Cl2]n, an unprecedented diazole-bridged one-dimensional copper halide: Synthesis, structure, and magnetic properties

Jun Ling Song, Zhen Chao Dong, Hui Yi Zeng, Wen Bo Zhou, Takashi Naka, Qiang Wei, Jiang Gao Mao, Guo Cong Guo, Jin Shun Huang

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42 Scopus citations

Abstract

The simultaneous desulfurization of 2-mercapto-5-methyl-1,3,4-thiadiazole with CuCl2·2H2O via mutual diffusion in solvents results in the isolation of air-stable dark-green crystals of [Cu(H4C3N2S)Cl2]n (∼65% yield). The structure is characterized by a unique one-dimensional copper chain bridged by diazine N-N single bonds rather than halogens, in sharp contrast with the halide bridging mode in conventional copper halide coordination polymers. Each Cu(II) ion shows a square planar coordination geometry featuring a strong Jahn-Teller distortion, as also supported by EPR data. The phase follows a Curie-Weiss paramagnetic behavior over 6-300 K. However, the intrachain antiferromagnetic interaction is evident (-2J = 21.1 cm-1). Such magnetic coupling is related to the interplay between the Cu(II)-dx2-y2 and diazine N-N p-orbitals.

Original languageEnglish (US)
Pages (from-to)2136-2140
Number of pages5
JournalInorganic Chemistry
Volume42
Issue number6
DOIs
StatePublished - Mar 24 2003

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    Song, J. L., Dong, Z. C., Zeng, H. Y., Zhou, W. B., Naka, T., Wei, Q., Mao, J. G., Guo, G. C., & Huang, J. S. (2003). [Cu(H4C3N2S)Cl2]n, an unprecedented diazole-bridged one-dimensional copper halide: Synthesis, structure, and magnetic properties. Inorganic Chemistry, 42(6), 2136-2140. https://doi.org/10.1021/ic025976m