Photophysics and Photochemistry of Nickel(II) Diselenophosphinate in CCl4.

Authors :: Mikheylis, A. V.
Grivin, V. P.
Pozdnyakov, I. P.
Melnikov, A. A.
Melnikov, A. R.
Sadykov, E. Kh.
Artem'ev, A. V.
Source :: High Energy Chemistry; 2023 Suppl 3, Vol. 57, pS433-S440, 8p
Publication Year :: 2023
Abstract: The nature of the photoprocess for a Ni(Se<subscript>2</subscript>P(C<subscript>6</subscript>H<subscript>5</subscript>)<subscript>2</subscript>)<subscript>2</subscript> = Ni(dsepi)<subscript>2</subscript> complex in CCl<subscript>4</subscript> and CH<subscript>3</subscript>CN has been determined by the EPR, steady-state and time-resolved optical spectroscopy methods. In both cases, the ultrafast relaxation of the excited state of Ni(dsepi)<subscript>2</subscript> molecules are observed; however, the occurrence of a photochemical reaction, in addition to the above process, has been detected in CCl<subscript>4</subscript> solutions. The photolysis mechanism of Ni(dsepi)<subscript>2</subscript> includes the ClNi(dsepi)(<superscript>•</superscript>dsepi) species formation stage initiated by electron transfer from the photoexcited complex to the halocarbon and subsequent fast reactions involving these intermediates. The final products of the photoreaction are the ((C<subscript>6</subscript>H<subscript>5</subscript>)<subscript>2</subscript>PSe)Se<subscript>2</subscript> diselenide and the NiCl<subscript>2</subscript> salt. [ABSTRACT FROM AUTHOR]