Charge-transfer photochemistry of the ternary complex (diselenocarbamato, dithiophosphato)copper(II)

Photolysis of the ternary system consisting of diethyldiselenocarbamate (Et 2dsc), diisopropyldithiophosphate ( i-Pr 2dtp) and copper(II) (1:1:1) has been studied in toluene, CH 2Cl 2, CHCl 3, CCl 4 and chloroalkane–EtOH solutions. The results obtained by EPR techniques and UV–Vis data indicate that...

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Bibliographic Details
Published in:Polyhedron 2000, Vol.19 (20), p.2177-2181
Main Authors: Yordanov, N.D, Jeliazkova, B, Roussanova, D, Sarova, G, O'Brien, P, Malik, M.A
Format: Article
Language:English
Subjects:
CT photochemistry
Diselenocarbamate and dithiophosphate ligands
Ternary copper(II) complexes
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Summary:Photolysis of the ternary system consisting of diethyldiselenocarbamate (Et 2dsc), diisopropyldithiophosphate ( i-Pr 2dtp) and copper(II) (1:1:1) has been studied in toluene, CH 2Cl 2, CHCl 3, CCl 4 and chloroalkane–EtOH solutions. The results obtained by EPR techniques and UV–Vis data indicate that a homolytic CuS bond cleavage involving dtp ligand appears as the primary photoprocess in Cu(dsc)(dtp) photolysis. Further conversion of the primary photoproduct Cu I(Et 2dsc) is discussed in terms of specific interaction with the solvent. According to quantum yield data solvent efficiencies in photolysis could be related to their oxidizing power. A reaction mechanism is proposed well fitting the experimental results.
ISSN:0277-5387
DOI:10.1016/S0277-5387(00)00520-9