Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.molstruc.2021.131557

Ключевые слова: 2-methyl-8-quinolinolate, carbonyl, electrochemistry, rhodium, triphenylphosphine, triphenylphosphite, uv spectroscopy, x-ray structure

Аннотация: 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)(PPh3)(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)(PPh3) (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 CH3CN 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. © 2021 Elsevier B.V.

Журнал: Journal of Molecular Structure

Выпуск журнала: Vol. 1249

Номера страниц: 131557

ISSN журнала: 00222860

Издатель: Elsevier B.V.

• Verpekin Victor V. (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
• Vasiliev Alexander D. (Krasnoyarsk Sci Ctr SB RAS, Inst Phys SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia)
• Maksimov Nikolay G. (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
• Burmakina Galina (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
• Zimonin Dmitry (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia)
• Nedelina Tatyana S. (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
• Chudin Oleg S. (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia)
• Rubaylo Anatoly (Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Fed Res Ctr, Akademgorodok 50-24, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia)

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