 |
Synthesis and Characterization of Some Cobalt(III) Complexes Containing Heterocyclic Nitrogen Donor Ligands
Nayak, S. C., Das, P. K. and Sahoo, K. K. Synthesis and Characterization of Some Cobalt(III) Complexes Containing Heterocyclic Nitrogen Donor Ligands Chemical Papers, Vol.57, No. 2, 2003, 91-96
|
|
|
Document type:
|
Článok z časopisu / Journal Article |
|
Collection:
|
Chemical papers
|
| |
| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n572a91.pdf
|
572a91.pdf |
application/pdf |
331.08KB |
0 |
| Author(s) |
Nayak, S. C.
Das, P. K.
Sahoo, K. K.
|
| Title |
Synthesis and Characterization of Some Cobalt(III) Complexes Containing Heterocyclic Nitrogen Donor Ligands
|
| Journal name |
Chemical Papers
|
| Publication date |
2003
|
| Year available |
2003
|
| Volume number |
57
|
| Issue number |
2
|
| ISSN |
0366-6352
|
| Start page |
91
|
| End page |
96
|
| Place of publication |
Poland
|
| Publisher |
Versita
|
| Collection year |
2003
|
| Language |
english
|
| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
|
| Abstract/Summary |
A number of mixed-ligand complexes of the type trans-[Co(DH)2LCl] where DH = dimethylglyoximatoanion, L = heterocyclic nitrogen donor ligand (pyridine, piperidine, quinoline, isoquinoline,triazole, indole, benzimidazole, benzotriazole, carbazole) have been synthesized and characterized.These complexes are not soluble in ordinary organic solvent but highly soluble in dimethylsulfoxide.The conductivity data show the nonelectrolytic nature of the complexes. The IR spectra reveal thecoordination from nitrogen of ligand to central cobalt atom and intramolecular hydrogen bonding. 1H NMR data of dimethylglyoxime and its Co(III) complexes are in agreement with the trans structure. The 13C NMR spectra of the complexes show a sharp signal for carbon atom in the methylgroup. So the four methyl groups in the Co(III) complexes are equivalent and are situated in a plane.The thermal decomposition studies indicate the absence of water of crystallization or associationof solvent molecules. This fact is supported by IR measurement. The loss of heterocyclic nitrogendonor ligands does not take place up to 215◦C. The ligand and chlorine atom are bonded strongly. The last product of decomposition is Co3O4 or CoO.
|
|
|
|
