EPR and electronic spectral studies of bis(dihalcogenocarbamato)copper(II)-solvent interactions.
The interaction of bis(diethyldithiocarbamato)copper(II), Cu(Et2dtc)2, and bis(diethyldiselenocarbamato)copper(II), Cu(Et2dsc)2, complexes with solvents is studied by EPR and electronic spectroscopy. The solvents used are CCl4, CHCl3, CH2Cl2, C6H5 x CH3, DMFA and DMSO. It is found that Cu(Et2dsc)2 is destroyed in a first order reaction in CCl4 with an activation energy of 5.2 kcal/mol. The other complex, Cu(Et2dtc)2, is only destroyed in DMSO. The observed effects and reaction pathways are discussed in terms of solute-solvent donor-acceptor interactions taking into account the differences in the electronic structures of both complexes.
Yordanov
N D
ND
Bulgarian Academy of Sciences, Institute of Catalysis, Sofia. ndyepr@bas.bg
Dimitrova
A
A
Roussanova
D
D
D002219:Carbamates / Q000032:analysis / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D004583:Electrons; D007700:Kinetics; D008024:Ligands; D009942:Organometallic Compounds / Q000032:analysis / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013696:Temperature; D013997:Time Factors
D002219:Carbamates; D008024:Ligands; D009942:Organometallic Compounds; D012997:Solvents; C409665:bis(diethyl-diselenocarbamato)copper(II)