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2003 | 1 | 4 | 427-440
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Thermally induced oxidative trimerization of benzimidazole by copper(II) chloride in the solid state

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Benzimidazolium trichlorocuprate(II) undergoes a redox reaction in the solid state at elevated temperature (∼240°C) to produce the cyclic trimer of benzimidazole and cuprous chloride. The trimer has been characterized by IR, NMR, and Mass spectroscopy. It has also been synthesized in lower yield by heating the mixtures of CuCl2 and benzimidazole in different ratios or heating other compounds of CuCl2 and benzimidazole. The absorption, emission, and excitation spectra of the trimer in two different solvents (TFA and DMSO) and a comparison of these results with those of benzimidazole are presented here.

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  • Department of Chemistry, University College of Science and Technology, University of Calcutta, 92, A. P. C. Road, 700 009, Kolkata, India,
  • Department of Chemistry, University College of Science and Technology, University of Calcutta, 92, A. P. C. Road, 700 009, Kolkata, India
  • Department of Chemistry, B. E. College (D.U.), 711 103, Botanic Garden, Howrah, India
  • Department of Chemistry, University College of Science and Technology, University of Calcutta, 92, A. P. C. Road, 700 009, Kolkata, India
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