Charge-transfer photochemistry of the ternary complex (diselenocarbamato, dithiophosphato)copper(II)
摘要:
Photolysis of the ternary system consisting of diethyldiselenocarbamate (Et,dsc), diisoproplidithiophosphate (i-Pr,dtp) and copper(II)(1:1:1) has been studied in toluene, CH2Cl2, CHCl3, CCl4, and chlolualkane-EtOH solutions. The results obtained bq 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-1(Et(2)dsc) 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. (C) 2000 Elsevier Science B.V. All rights reserved.
Charge-transfer photochemistry of the ternary complex (diselenocarbamato, dithiophosphato)copper(II)
摘要:
Photolysis of the ternary system consisting of diethyldiselenocarbamate (Et,dsc), diisoproplidithiophosphate (i-Pr,dtp) and copper(II)(1:1:1) has been studied in toluene, CH2Cl2, CHCl3, CCl4, and chlolualkane-EtOH solutions. The results obtained bq 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-1(Et(2)dsc) 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. (C) 2000 Elsevier Science B.V. All rights reserved.