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Synthesis, X-ray Crystal Structure and Magnetic Study of a μ1,5-dca Bridged Dimeric Copper(II) Complex

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Abstract

The reaction of aqueous solution of copper(II) nitrate trihydrate with methanolic solution of the ligand HL and sodium dicyanamide in aqueous medium results in the formation of a dimeric dicyanamide complex of Cu(II), [Cu2(L)2(μ1,5-dca)2]·0.5 H2O (1) [where L = 1-(N-salicylideneamine)-2-(N-ethyl)-aminoethane]. The single crystal X-ray structure reveals that the asymmetric unit of complex 1 consists of two dinuclear units. The complex crystallizes in the monoclinic space group P21 with cell parameters, a = 9.8828(19) Å, b = 19.018(4) Å, c = 14.851(3) Å, (°) = 92.979(6) and Z = 4. χM T, stays in the 0.94–0.91 cm3 mol−1 K range between 300 and 2 K, which is slightly higher than the spin-only value (χM T = 0.75 cm3 mol−1 K) for two uncoupled copper(II) (S = ½) ions assuming g = 2.0, thus indicating that the complex 1 behaves like a simple paramagnet.

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Acknowledgments

The authors acknowledge the financial supports from the CSIR, New Delhi (01/(1972)/05/EMR II). We also acknowledge the Ministry of Environment and Forest, Government of India for funding a project (to SK).

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Authors and Affiliations

  1. Department of Chemistry, Jadavpur University, Kolkata, 700 032, India

    Dasarath Mal, Rupam Sen & Subratanath Koner

  2. School of EPS-Chemistry, Heriot-Watt University, Edinburgh, EH14 4AS, UK

    Georgina M. Rosair

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  1. Dasarath Mal
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  2. Rupam Sen
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  3. Georgina M. Rosair
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  4. Subratanath Koner
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Correspondence to Subratanath Koner.

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Mal, D., Sen, R., Rosair, G.M. et al. Synthesis, X-ray Crystal Structure and Magnetic Study of a μ1,5-dca Bridged Dimeric Copper(II) Complex. J Chem Crystallogr 41, 1018–1022 (2011). https://doi.org/10.1007/s10870-011-0036-4

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  • DOI: https://doi.org/10.1007/s10870-011-0036-4

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