Photochemistry of (n-Bu4N)2[Pt(NO3)6] in acetonitrile

Vjacheslav P Grivin; Svetlana G Matveeva; Roman G Fedunov; Vadim V Yanshole; Danila B Vasilchenko; Evgeni M Glebov

doi:10.1007/s43630-024-00550-5

Photochemistry of (n-Bu₄N)₂[Pt(NO₃)₆] in acetonitrile

Photochem Photobiol Sci. 2024 Apr;23(4):747-755. doi: 10.1007/s43630-024-00550-5. Epub 2024 Mar 2.

Authors

Vjacheslav P Grivin¹, Svetlana G Matveeva¹, Roman G Fedunov¹, Vadim V Yanshole^{2

3}, Danila B Vasilchenko⁴, Evgeni M Glebov^{5

6}

Affiliations

¹ V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3 Institutskaya Str, 630090, Novosibirsk, Russian Federation.
² International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a Institutskaya Str., 630090, Novosibirsk, Russian Federation.
³ Novosibirsk State University, 2 Pirogova Str., 630090, Novosibirsk, Russian Federation.
⁴ A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Institutskaya Str, 630090, Novosibirsk, Russian Federation.
⁵ V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3 Institutskaya Str, 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru.
⁶ Novosibirsk State University, 2 Pirogova Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru.

PMID: 38430371
DOI: 10.1007/s43630-024-00550-5

Abstract

Photochemistry of the (n-Bu₄N)₂[Pt(NO₃)₆] complex in acetonitrile was studied by means of stationary photolysis and nanosecond laser flash photolysis. The primary photochemical process was found to be an intramolecular electron transfer followed by an escape of an ^•NO₃ radical to the solution bulk. The spectra of two successive Pt(III) intermediates were detected in the microsecond time domain, and their spectral and kinetic characteristics were determined. These intermediates were identified as Pt^III(NO₃)₅^2- and Pt^III(NO₃)₄^- complexes. Disproportionation of Pt(III) species resulted in formation of final Pt(II) products.

Keywords: Acetonitrile; Laser flash photolysis; NO3 • radical; Photochemistry; Platinum(IV) complexes.

Grants and funding

23-13-00226/Russian Science Foundation