| Publication Type |
Journal Article |
| Title |
E/Z isomerization of 3-hydrazonocamphor promoted by coordination to palladium or platinum |
| Authors |
M Fernanda NN Carvalho Ana S. D. Ferreira João Ferreira da Silva Luis F. Veiros |
| Groups |
BioMol IOARC |
| Journal |
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS |
| Year |
2007 |
| Month |
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|
| Volume |
72 |
| Number |
5 |
| Pages |
649-665 |
| Abstract |
3-Hydrazonocamphor, 3-((RRNN)-N-1) C10H14O (R = Me, R-1 = H), undergoes intramolecular hydrogen bridging by coordination to platinum or palladium. This effect is evidenced by considerable decrease in the eta(C = O) frequency (compared to the free ligand) in the IR spectra of the complexes [MCl2L2] (M = Pd, Pt; L = 3-((RRNN)-N-1)C10H14O) as well as by the magnetic non-equivalence of the two ligands, as revealed by C-13 NMR. DFT calculations indicate that coordination of 3-(Me(H) NN)C10H14O promotes E/Z isomerization of the hydrazono group of the ligand, inducing formation of intramolecular hydrogen bonding and corresponding stabilization of the complex. Characterization of the complexes [MCl2L2] (M = Pt; L: R, R-1 = Me (1), R = Me, R-1 = H (2) and M = Pd; L: R = Me, R-1 = H (3)) was performed by analytical and spectroscopic techniques. Redox properties of the 3-hydazonocamphors and their complexes were studied by cyclic voltammetry. The structure of trans-[PtCl2\3-(Me2NN)C10H14O\(2)] was determined by single-crystal X-ray diffraction analysis. The complex has square-planar geometry and crystallizes in the tetragonal P4(3) space group. |
| DOI |
http://dx.doi.org/10.1135/cccc20070649 |
| ISBN |
|
| Publisher |
INST ORGANIC CHEM AND BIOCHEM |
| Book Title |
|
| ISSN |
0010-0765 |
| EISSN |
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| Conference Name |
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| Bibtex ID |
ISI:000249037800007 |
| Observations |
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