Abstract
A mononuclear cobalt(III) complex [Co(bpy)2Cl2]NO3⋅2H2O (1) (bpy = 2,2′-bipyridine) has been synthesized and crystallographically characterized. Self-assembly of the lattice water molecules from rectangular tetrameric water cluster interacts with nitrate anion along the c-axis forming a six membered hexagonal water-nitrate cluster. It presents a new mode of association of water molecules with nitrate molecules which is not predicted theoretically or found experimentally. The molecule effectively cleaves bacterial genomic DNA and shows important cytotoxicity against human hepatocarcinoma cell (HepG2).
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Acknowledgements
DD thanks the Science & Engineering Research Board (SERB), New Delhi for fellowship to him. The work is supported financially by SERB, India under the FAST TRACK SCHEME for YOUNG SCIENTIST (No. SB/FT/CS-088/2013 dtd. 21/05/2014). BB sincerely thanks Dr. P. S. Guin and Dr. S. Roy, Department of Chemistry, Shibpur Dinobundhoo Institute (College), Howrah 711102, West Bengal for the electrochemical data of the cobalt(III) complex.
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Supplementary crystallographic data are available free of charge from The Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK (fax: + 44-1223-336033; E-mail: deposit@ccdc.cam.ac.uk or www: http://www.ccdc.cam.ac.uk) upon request, quoting deposition number CCDC 825244. FTIR, UV-Vis spectra, ESI-MS, supramolecular interactions, TGA diagram and table of hydrogen bonded parameters (Figures S1 – S10 and Tables S1 and S2) are given in Supplementary Information, available at www.ias.ac.in/chemsci.
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DAS, S., RANJANI, A., GAYATHRI, L. et al. Recognition of self-assembled water-nitrate cluster in a Co(III)-2,2′-bipyridine host: Synthesis, X-ray structure, DNA cleavage, molecular docking and anticancer activity. J Chem Sci 128, 1755–1764 (2016). https://doi.org/10.1007/s12039-016-1167-0
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DOI: https://doi.org/10.1007/s12039-016-1167-0