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Mononuclear and dinuclear trimethylplatinum(IV) iodide complexes of 3-substituted pyridines

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Reaction of tetrameric trimethylplatinum(IV) iodide with an excess of 3-substituted pyridines in chloroform afforded mononuclear complexes, [PtMe3L2I] (L = 3-CNpy, 3-Brpy, 3-MeOpy, 3-Mepy and 3-Etpy). The complexes were characterized by 1H NMR, CHN analysis and X-ray single crystal structure analysis. The mononuclear complexes undergo reaction with trimethylplatinum(IV) iodide in chloroform to form the corresponding dinuclear forms (both syn and anti). A comparison of both the mononuclear and dinuclear forms in solution for a particular pyridine substituent has been studied in detail with the help of 1H NMR spectroscopy, ably supported by DFT computational studies. The investigation further shows the influence of the pyridine substituent on controlling the mode of the reaction. The crystal structures of two dinuclear complexes, syn-[PtMe3(3-CNpy)I]2 and anti-[PtMe3(3-Brpy)I]2, have also been described here.

Graphical abstract: Mononuclear and dinuclear trimethylplatinum(iv) iodide complexes of 3-substituted pyridines

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Publication details

The article was received on 30 Jan 2017, accepted on 29 Mar 2017 and first published on 29 Mar 2017

Article type: Paper
DOI: 10.1039/C7NJ00337D
Citation: New J. Chem., 2017, Advance Article
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    Mononuclear and dinuclear trimethylplatinum(IV) iodide complexes of 3-substituted pyridines

    B. N. Ghosh, S. Schlecht, A. Bauzá and A. Frontera, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ00337D

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