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1,3-Bis(N-Methylbenzimidazol-2′-yl)-2-Phenylpropanedichloridocopper(II)

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Abstract

The orange complex of copper(II) chloride with the bidentate ligand 1,3-bis(N-methylbenzimidazol-2′-yl)-2-phenylpropane crystallises in the orthorhombic space group P212121. The CuN2Cl2 coordination core is of somewhat flattened tetrahedral geometry, with the ligand forming an eight-membered chelate ring. The complex’s solid state rhombic EPR spectrum becomes more tetragonalised in solution. The g|| values for such CuN2Cl2 centres increase with increasing coordination core twist angle. The absorption spectrum displays visible-region bands which DFT calculations suggest are combinations of d–d, LMCT and MLCT components.

Graphical Abstract

The complex from copper(II) chloride and a new bis(benzimidazole) ligand possesses a somewhat flattened pseudotetrahedral CuN2Cl2 coordination core, entailing an eight-membered N-Cu-N chelate ring.

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Acknowledgements

PEMA is thankful to CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for funding a scholarship through the Brazilian Scientific Mobility Program. MZ thanks NSF Grant CHE 0087210, Ohio Board of Regents Grant CAP-491, and NSF Grant 1337296 for Youngstown State University. AWA & MN acknowledge support from Drexel University.

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Authors and Affiliations

  1. Department of Chemistry, Drexel University, 3141 Chestnut St., Philadelphia, PA, 19104-2816, USA

    Pedro E. M. Amaral, Mohammad Nozari & Anthony W. Addison

  2. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, 09210-580, Brazil

    Pedro E. M. Amaral

  3. Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907-2084, USA

    Matthias Zeller

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Correspondence to Anthony W. Addison.

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Amaral, P.E.M., Zeller, M., Nozari, M. et al. 1,3-Bis(N-Methylbenzimidazol-2′-yl)-2-Phenylpropanedichloridocopper(II). J Chem Crystallogr 52, 450–457 (2022). https://doi.org/10.1007/s10870-021-00914-0

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