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Hydrogen bonding supramolecular networks of copper(II) 2-choronicotinate complexes with picolinamide, nicotinamide, N-methyl-nicotinamide, 2-pyridylmethanol and 4-pyridylmethanol: Hirshfeld surface analysis and spectral properties

Flora Jozefikova, Lenka Kuckova, Jan Lokaj, Milan Mazur, and Jan Moncol

Institute of Inorganic Chemistry, Technology and Materials, Slovak, University of Technology, Bratislava, Slovak Republic

 

E-mail: jan.moncol@stuba.sk

Received: 28 January 2020  Accepted: 23 May 2020

Abstract:

The crystal and molecular structure of copper(II) 2-chloronicotinate (2-Clnic) of the composition [Cu(2-Clnic)2(pia)2] (pia = Picolinamide) (1), [Cu(2-Clnic)2(nia)2] (nia = Nicotinamide) (2), [Cu(2-Clnic)2(nia)2(H2O)]·H2O (3), [Cu(2-Clnic)2(mna)2(H2O)2] (mna = N-methylnicotinamide) (4), [Cu(2-Clnic)2(2 pm)2] (2 pm = 2-Pyridylmethanol) (5), and [Cu(2-Clnic)2(4 pm)2(H2O)2]·2H2O (4 pm = 4-Pyridylmethanol) (6) were determined by single-crystal X-ray analysis. Crystal structures of the respective complexes are monomeric with a different composition of coordination sphere about Cu(II) atom. The arrangement about Cu(II) in all coordination compounds are pseudooctahedral trans-coordinated, where carboxylic groups are bidentate (2,3) or monodentate (1,36) coordinated to atom copper. The molecules of all compounds are connected by strong N–H···O, N–H···N and/or O–H···O hydrogen bonds. EPR spectra of powder complexes 16 were measured and computer-simulated.

Keywords: Copper(II) complexes; 2-Chloronicotinate; Crystal structure; Hydrogen bonds

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01224-z

 

Chemical Papers 74 (11) 3727–3740 (2020)

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