Photophysics and Photochemistry of Nickel(II) Diselenophosphinate in CCl4

The nature of the photoprocess for a Ni(Se 2 P(C 6 H 5 ) 2 ) 2 = Ni(dsepi) 2 complex in CCl 4 and CH 3 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) 2 molecules are observed; h...

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Bibliographic Details
Published in:High energy chemistry 2023-12, Vol.57 (Suppl 3), p.S433-S440
Main Authors: Mikheylis, A. V., Grivin, V. P., Pozdnyakov, I. P., Melnikov, A. A., Melnikov, A. R., Sadykov, E. Kh, Artem’ev, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Electron transfer
Photochemical reactions
Photochemistry
Photolysis
Physical Chemistry
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Summary:The nature of the photoprocess for a Ni(Se 2 P(C 6 H 5 ) 2 ) 2 = Ni(dsepi) 2 complex in CCl 4 and CH 3 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) 2 molecules are observed; however, the occurrence of a photochemical reaction, in addition to the above process, has been detected in CCl 4 solutions. The photolysis mechanism of Ni(dsepi) 2 includes the ClNi(dsepi)( • 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 6 H 5 ) 2 PSe)Se 2 diselenide and the NiCl 2 salt.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143923090096