Showing papers by "Mariana Mitewa published in 1990"
TL;DR: In this article, the pulsed laser photolysis (excimer laser, XeCl; 308 nm) of the PtCl 6 2−creatinine-methanol system was studied.
Abstract: The pulsed laser photolysis (excimer laser, XeCl; 308 nm) of the PtCl 6 2− —creatinine—methanol system was studied. The formation of an intermediate Pt III species (PtCl 5 2− cr, where cr = creatinine) was demonstrated and its decay kinetics were examined. Some kinetic and thermodynamic data of the photoinduced reaction were determined. The photolysis of the same system using stationary irradiation was also investigated allowing the end product of the reaction to be determined.
35 citations
5 citations
TL;DR: In this article, the effect of solvent on the behavior of the copper(II) complex of 1,4,7,10,13,16-hexacyclooctadecane was investigated by cyclic voltammetry as well as visible absorption and EPR spectroscopy.
Abstract: The effect of solvent on the behaviour of the copper(II) complex of 1,4,7,10,13,16-hexaazacyclooctadecane (hexacyclen) has been investigated by cyclic voltammetry as well as visible absorption and EPR spectroscopy. Within a series of solvents with different coordination ability (pyridine, DMSO, DMF, water, acetone, acetonitrile) the Cu(II)/Cu(I) reduction potential (about –0.7 V on a mercury electrode and –1.1 V vs SCE on platinum), the d-d absorption band (15300 cm−1) and the values of gI and gII at -170°C (2.07 and 2.18, respectively) remain unchanged and indicate a stable octahedral CuN6 environment.
4 citations
2 citations