New complexes of cobalt(II) ions with pyridinecarboxylic acid N-oxides and 4,4′-byp
Authors:
- Zbigniew Hnatejko,
- Grzegorz Edward Dutkiewicz,
- Maciej Kubicki,
- Stefan Lis
Abstract
This paper reports a study concerning the isolation and characterization of mixed ligand complexes of the Co(II) ions with pyridinecarboxylic acids N-oxides (picolinic (PNO), nicotinic (NNO) and isonicotinic (INO)), [Co(PNO)2(4,4′-byp)]·6H2O 1, [Co(NNO)(4,4′-byp)NO3]·8H2O 2 and [Co(INO)(4,4′-byp)NO3]·7H2O 3; (4,4′-byp = 4,4′-bipyridine). The complexes 2 and 3 were prepared by the hydrothermal synthesis. The structures of the complexes were elucidated on the basis of elemental analysis, thermal decomposition, IR and mass spectroscopy. IR spectra show that N-oxides act as bidentate ligands, in which both the N-oxide and the carboxylate groups are involved in coordination. In 2 and 3 the Co(II) ion exists in the same coordination environment. For 1, the X-ray crystal structure has been determined and it turned out that it contains the coordination polymers, created by the chains of Co ions joined by 4,4′-byp ligands. The Co(II) ion occupies the center of symmetry in the space group C2/c. This ion is coordinated by two nitrogen atoms (from two 4,4′-byp ligands) and four oxygen atoms from two PNO anions. The extensive network of hydrogen bonds involving six different water molecules connects the one-dimensional polymers into three-dimensional crystal structure. © 2012 Elsevier B.V. All rights reserved.
- Record ID
- UAM4aa723e965b14033bd8c4e3197088d64
- Author
- Journal series
- Journal of Molecular Structure, ISSN 0022-2860
- Issue year
- 2013
- Vol
- 1034
- Pages
- 128-133
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.molstruc.2012.08.044 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 20
- Score source
- journalList
- Score
- Publication indicators
- = 23; = 22; = 25; : 2013 = 0.843; : 2013 (2 years) = 1.599 - 2013 (5 years) =1.585
- Citation count
- 25
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM4aa723e965b14033bd8c4e3197088d64/
- URN
urn:amu-prod:UAM4aa723e965b14033bd8c4e3197088d64
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.