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- Title
Crystal structure of tris(pyridine) (salicylaldehyde semicarbazonato(2-))cobalt(III)- trichloropyridinecobaltate(II) at 293 and 120 K.
- Authors
Bogdanović, Goran A.; Leovac, Vukadin M.; Vojinović-Ješić, Ljiljana S.; Spasojević-De Biré, Anne
- Abstract
The crystal structure of [CoIII(L)(py)3][CoIICl3(py)] (H2L = salicylaldehyde semicarbazone)was determined by X-ray analysis based on two single crystal X-ray experiments performed at 120 K and 293 K, respectively. It was found that the pyridine ligand of the complex anion is disordered over two positions. The preferential position of this pyridine found at 120 K was explained in terms of the C—H…Cl intermolecular interaction between the tetrahedral [CoII(py)Cl3]- anions. The mer-octahedral geometry of the cation in the presented crystal structure was compared with previously published structures of similar composition, [CoIII(L1)(py)3]+[CoIICl3(py)]-·EtOH and [CoIII(LI)(py)3]+I3- (H2LI = salicylaldehyde S-methylisothiosemicarbazone). Although the tetrahedral [CoIICl3(py)]- anions possess the same charge, they mutually form different intermolecular interactions which can be realized either by C—H…Cl hydrogen bonds or by π—π interactions between the pyridine rings.
- Subjects
PYRIDINE; COBALT; CRYSTALS; ANIONS; HYDROGEN bonding; X-rays
- Publication
Journal of the Serbian Chemical Society, 2007, Vol 72, Issue 1, p63
- ISSN
0352-5139
- Publication type
Article
- DOI
10.2298/JSC0701063B