Synthesis, Crystal Structure and Spectral Properties of Copper(II) 2-Chloronicotinato Complexes with N-Heterocyclic Ligands

Authors

  • JOZEF MIKLOVIČ
  • DUŠAN VALIGURA
  • INGRID SVOBODA
  • JÁN MONCOL
  • MILAN MAZÚR

DOI:

https://doi.org/10.1515/nbec-2016-0019

Keywords:

complex, copper(II), crystal structure, carboxylate, IR, electronic and EPR spectra

Abstract

The synthesis and characterization of nine new copper(II) complexes [Cu(2-Clnic)2L2] (where 2-Clnic is 2-chloronicotinate anion, L is imidazole – Im, benzimidazole – Bim, furo[3,2-c]pyridine – FP, 2-methylfuro[3,2-c]pyridine – MFP, or [1]benzofuro[3,2-c]pyridine – BFP), [Cu(2-Clnic)2(INA)] (where INA is isonicotinamide), [Cu(2-Clnic)2(4-py)]·H2O (where 4-py is 4-methylpyridine) and [Cu2(2-Clnic)4(IQ)2] (where IQ is isoquinoline) are reported. The characterizations were based on elemental analysis, infrared, electronic and EPR spectra. The dimeric character of [Cu2(2-Clnic)4(IQ)2] is assumed on the EPR spectrum and the other spectral methods. The crystal structure of the [Cu(2-Clnic)2(Bim)2] and [Cu(2-Clnic)2(FP)2] complexes have been determined by X-ray crystal structure analysis. Both complexes exhibit the hexacoordination coordination polyhedra around copper atom that lies in the crystallographic center of symmetry. The distorted tetragonal-bipyramidal (4+2) arrangement is in good agreement with spectral data that have suggested an asymmetric chelate coordination of the carboxylic group.

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How to Cite

MIKLOVIČ, J. ., VALIGURA, D. ., SVOBODA, I. ., MONCOL, J. ., & MAZÚR, M. . (2016). Synthesis, Crystal Structure and Spectral Properties of Copper(II) 2-Chloronicotinato Complexes with N-Heterocyclic Ligands. Nova Biotechnologica Et Chimica, 15(2), 190–199. https://doi.org/10.1515/nbec-2016-0019

Issue

Vol. 15 No. 2 (2016)

Section

Research Articles

License

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