Showing papers by "Mariana Mitewa published in 1993"
TL;DR: In this paper, the conditions for Pt(III) formation as transient species and its further stabilization as “Platinum Blue” complexes are suggested. And a general method for obtaining “platinum blue” species is suggested.
Abstract: Studying the kinetics of PtCl4
2-
cis-[Pt(NH3)2(H2O)2]2+ and cis-Pt(NH3)2Cl2 (cis-DDP) reactions with different types of ligands using spectrophotometric, Potentiometric and EPR methods, the conditions for Pt(III) formation as transient species and its further stabilization as “Platinum Blue” complexes were found. A general method for obtaining “Platinum Blue” species is suggested.
8 citations
TL;DR: In this article, the structure of cobalt, nickel, and copper complexes of diethyl-(2-oxo-1-phenylethyl)phosphonate was studied by spectroscopic (IR, electronic and EPR) and magnetochemical methods.
Abstract: The cobalt(II)-, nickel(II)- and copper(II)-complexes of diethyl-(2-oxo-1-phenylethyl)phosphonate 1 (2, 3, and 4, respectively) are synthesized using the corresponding metal acetates. Their structure is studied by spectroscopic (IR, electronic and EPR) and magnetochemical methods. The experimental data indicate that the cobalt and nickel complexes 2 and 3 are octahedrically coordinated by the bidentate phosphonyl and acetate ligands. EPR evidences of the formation of two different Cu(II) complex species in solution are also obtained.
5 citations
TL;DR: In this article, complexes of Fe(III), Co(II), Ni(II) and Cu(II)-with a tetraaza [14]annulene derivative were synthesized and their structures studied by means of IR, EPR, magnetochemical and 57Fe-Mossbauer scectroscopy.
Abstract: Complexes of Fe(III), Co(II), Ni(II) and Cu(II) with a tetraaza [14]annulene derivative were synthesized and their structures studied by means of IR, EPR, magnetochemical and 57Fe-Mossbauer scectroscopy.
1 citations