| Publication Type |
Journal Article |
| Title |
N-SALICYLIDENEAMINO ACIDATE COMPLEXES OF OXOVANADIUM(IV) .1. CRYSTAL AND MOLECULAR-STRUCTURES AND SPECTROSCOPIC PROPERTIES |
| Authors |
Isabel Cavaco J.C. Pessoa D Costa M. Teresa Duarte RD Gillard P MATIAS |
| Groups |
|
| Journal |
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS |
| Year |
1994 |
| Month |
January |
| Volume |
|
| Number |
2 |
| Pages |
149-157 |
| Abstract |
The complex [VO(salgly)(H2O)] 1 dissolved in pyridine (py) to form brown [VO(salgly)(py)(2)] 2 (salgly = N-salicylideneglycinate). A brown complex [VO(sal-L-ala)(bipy)] 3 precipitated on adding 2.2 -bipyridine (bipy) to [VO(sal-L-ala)(H2O)] 4 (sal-L-ala = N-salicylidene-L-alaninate) in methanol. The structures of 2 and 3 have been determined by X-ray diffraction analysis. In both the tridentate Schiff-base ligands occupy equatorial positions and the two heterocyclic nitrogen atoms of py or bipy co-ordinate in equatorial and axial positions, completing an octahedral geometry around the vanadium. The circular dichroism spectra of 3 dispersed in Nujol and in methanolic solutions are very similar. This finding together with EPR and thin-layer chromatographic experiments suggests that 3 is relatively stable to hydrolysis and that its structures in the solid state and solution are similar. Complex 2 and [VO(sal-L-ala) (py)(n)] are not as stable to hydrolysis as 3 and a solid formulated as [VO(salgly)(py) (H2O)] was als isolated. |
| DOI |
http://dx.doi.org/10.1039/dt9940000149 |
| ISBN |
|
| Publisher |
ROYAL SOC CHEMISTRY |
| Book Title |
|
| ISSN |
1472-7773 |
| EISSN |
|
| Conference Name |
|
| Bibtex ID |
ISI:A1994MT64300005 |
| Observations |
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