The electrochemical and photoredox properties of copper (II) cells at variable temperatures and could be characterized for the first time by UV/Vis spectroscopy. The reduced formal thiopyrazolone Schiff base complexes 1-9 with imine and thiolate coordination, showing variable degrees of d 10 copper(I) species absorb only weakly in the visible region. The oxidized products 1(o)-9(o) show several strong tetrahedral distortion, were investigated by means of combined electrochemical and spectroscopic techniques in absorptions in the visible region due to the presence of formal d 8 copper(III) species. The spectral information the temperature range of 193Ϫ293 K. The cyclic voltammograms of 1-9 in butyronitrile revealed that the allowed assignment of the initial photoproducts. Irradiations in donor media such as THF or EtOH initially produces 1(r)-reduction and oxidation paths are strongly dependent on the geometry of the CuN 2 S 2 moiety. Due to the strong 9(r). No photoreduction was observed in tBuOH which cannot liberate reducing H α . The primary oxidized species delocalization of the singly occupied redox orbital (SOMO) the oxidations and reductions occur in a narrow potential 1(o)-9(o) were formed in chlorinated acceptor solvents (CHCl 3 ) on UV irradation. Fast relaxation to the ground state range. The one-electron-reduced 1(r)-9(r) and oxidized 1(o)-9(o) products were electrogenerated and stabilized inside prevents the photoredox reactions from CT or LF excited states. optically transparent thin-layer electrochemical (OTTLE)
methyl-1-phenylpyrazole with selected diamines has been in the literature.