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Synthesis, spectroscopic, and structural aspects of two trinuclear cyano-bridged heterometallic complexes

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Abstract

Two new cyano-bridged trinuclear heterometallic complexes [Sr2(Phen)4(CF3CO2)(H2O)3Fe(CN)6]·2H2O (1) [Ca2(Phen)4(CF3CO2)(H2O)Co(CN)6]·2H2O (2) (where Phen=1,10-phenanthroline) have been synthesized and their crystal structures have been determined. The structure of complex (1) features a central [Fe(CN)6]3− unit that links a monocation, [Sr(Phen)2(OH2)(OOCCF3)]+ and a dication, [Sr(Phen)2(OH2)2]2+ via two trans cyanide bridges. The complex (2) features a central [Co(CN)6]3− unit that links two monocations of [Ca(Phen)2(OH2)(OOCCF3)]+ (the positions of the trifluoro acetate and water molecules are disordered over two positions) via two trans cyanide bridges. Each metal atom is seven coordinated and achieves pentagonal bipyramidal geometry. Two cocrystallized water molecules are present in both the complexes. The presence of an extensive network of hydrogen bonding imparts the overall stability to both the systems.

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Acknowledgement

Financial assistance from DRDO and UGC, New Delhi, India, is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Jadavpur University, Kolkata, 700032, India

    Brajagopal Samanta, Joy Chakraborty, Nirmal Kumar Karan & Samiran Mitra

  2. Department of Chemistry, Nagaland University, Mokokchung, 798601, Nagaland, India

    R. K. Bhubon Singh

  3. Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA

    Glean P. A. Yap

  4. Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 16, A-8010, Graz, Austria

    Christoph Marschner & Judith Baumgartner

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  1. Brajagopal Samanta
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  2. Joy Chakraborty
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  3. Nirmal Kumar Karan
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  4. R. K. Bhubon Singh
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  5. Glean P. A. Yap
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  8. Samiran Mitra
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Correspondence to Samiran Mitra.

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Samanta, B., Chakraborty, J., Karan, N.K. et al. Synthesis, spectroscopic, and structural aspects of two trinuclear cyano-bridged heterometallic complexes. Struct Chem 17, 139–147 (2006). https://doi.org/10.1007/s11224-006-9045-x

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  • DOI: https://doi.org/10.1007/s11224-006-9045-x

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