Journal of Molecular Structure, volume 1249, pages 131557
Structure, UV spectroscopic and electrochemical properties of 2-methyl-8-quinolinolato rhodium (I) complexes, containing carbonyl, triphenylphosphine or triphenylphosphite ligands
Publication type: Journal Article
Publication date: 2022-02-01
Journal:
Journal of Molecular Structure
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3.8
ISSN: 00222860
Organic Chemistry
Inorganic Chemistry
Spectroscopy
Analytical Chemistry
Abstract
• A solvent economic approach to the synthesis of Rh(2-Me-8-Oxq)(CO) 2 was suggested. • The structures of Rh(2-Me-8-Oxq)(CO)(L) [L = PPh 3 and P(OPh 3 )] were determined. • Redox and UV-spectroscopic properties of the obtained compounds were investigated. • The ways of redox-induced transformations of the complexes were established. The known Rh(2-Me-8-Oxq)(CO) 2 complex (1) was prepared through treatment of dicarbonyl(acetylacetonate)rhodium (I) with 2-methyl-8-hydroxyquinoline for the first time. The reactions of 1 with triphenylphosphine and triphenylphosphite result in complexes Rh(2-Me-8-Oxq)(PPh 3 )(CO) (2) and Rh(2-Me-8-Oxq)[P(OPh) 3 ](CO) (3) that were characterized by IR and NMR spectroscopy. The structures of complexes 2 and 3 were determined by single-crystal X-ray diffraction analysis. The complexes show the 2-methyl-8-quinolinolato ligand in the expected coordination mode with a slightly disordered square planar geometry at the rhodium center. In the crystal, molecules of Rh(2-Ме-8-Oxq)(CO)(PPh 3 ) (2) form centrosymmetric dimers due to π-stacking interactions. No intermolecular contacts are observed in the crystal of 3. The UV spectroscopic and electrochemical properties of complexes 1–3 were studied. Their electronic spectra in CH 3 CN show three quinoline-centered absorptions. The electrochemical study revealed that the oxidation of the complexes 1–3 is two-electron and leads to the formation of dication Rh (III) species while their reduction gives radical anions, which undergoes rapid decomposition.
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Verpekin V.V. et al. Structure, UV spectroscopic and electrochemical properties of 2-methyl-8-quinolinolato rhodium (I) complexes, containing carbonyl, triphenylphosphine or triphenylphosphite ligands // Journal of Molecular Structure. 2022. Vol. 1249. p. 131557.
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Verpekin V.V., Vasiliev A.D., Maksimov N.G., Burmakina G.V., Zimonin D.V., Nedelina T.S., Chudin O.S., Rubaylo A.I. Structure, UV spectroscopic and electrochemical properties of 2-methyl-8-quinolinolato rhodium (I) complexes, containing carbonyl, triphenylphosphine or triphenylphosphite ligands // Journal of Molecular Structure. 2022. Vol. 1249. p. 131557.
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TY - JOUR
DO - 10.1016/j.molstruc.2021.131557
UR - https://doi.org/10.1016%2Fj.molstruc.2021.131557
TI - Structure, UV spectroscopic and electrochemical properties of 2-methyl-8-quinolinolato rhodium (I) complexes, containing carbonyl, triphenylphosphine or triphenylphosphite ligands
T2 - Journal of Molecular Structure
AU - Verpekin, V V
AU - Vasiliev, A D
AU - Maksimov, N G
AU - Burmakina, G V
AU - Zimonin, D V
AU - Nedelina, T S
AU - Chudin, O S
AU - Rubaylo, A I
PY - 2022
DA - 2022/02/01 00:00:00
PB - Elsevier
SP - 131557
VL - 1249
SN - 0022-2860
ER -
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@article{2022,
author = {V V Verpekin and A D Vasiliev and N G Maksimov and G V Burmakina and D V Zimonin and T S Nedelina and O S Chudin and A I Rubaylo},
title = {Structure, UV spectroscopic and electrochemical properties of 2-methyl-8-quinolinolato rhodium (I) complexes, containing carbonyl, triphenylphosphine or triphenylphosphite ligands},
journal = {Journal of Molecular Structure},
year = {2022},
volume = {1249},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016%2Fj.molstruc.2021.131557},
pages = {131557},
doi = {10.1016/j.molstruc.2021.131557}
}