http://hdl.handle.net/11089/15351 2026-04-09T12:52:05Z http://hdl.handle.net/11089/15367 Calorimetric investigation of aniline solutions in HMPT-H₂O mixtures at 298.15 K Taniewska-Osińska, Stefania; Jóźwiak, Małgorzata 1984-01-01T00:00:00Z http://hdl.handle.net/11089/15366 The potentiometric study of Co(II) complexes with mercaptocarboxylic acids Masłowska, Joanna; Szmich, Józef The interaction between Co(II) ions and thiolactic acid TLA or thioglycolic acid TGA in aqueous 0.1 M NaClO₄ has been studied potentiometrically at 20°. The formation of complexes of the type Co(SRC00) and Co(SRC00)²⁻₂ (where R - CH₂ or CH₃CH) has been found. The stability constants of these complexes have been determined as well as the acid dissociation constants of TLA and TGA. Thiolactic acid and thioglycolic acid, belong to a physiologically important class of compounds. As they behave as strong complexing agents, it seemed to be interesting to comparise the stabilities of Co(II) complexes with these acids. Praca została nadesłana na III polsko-radzieckie sympozjum "Termodynamika i elektrochemia roztworów elektrolitów". 1984-01-01T00:00:00Z http://hdl.handle.net/11089/15361 Thermodynamic functions of activation of viscous flow in NaI-water-amide systems Taniewska-Osińska, Stefania; Piekarska, Alina 1984-01-01T00:00:00Z http://hdl.handle.net/11089/15360 Chromium(III) complexes with DL-methionine and L-cysteine Masłowska, Joanna; Chruściński, Longin Chromium(III) complexes with DL-methionine and L-cysteine have beon investigated by pH-metric and spectrophotometric methods. In both investigated systems, three complexes of the composition H : L = 1 : 1; 1 : 2; 1 : 3, have been found, stability constants for the resultant complexes have been determined by the method of Bjerrum. Crystalline complexes with the investigated ligands of the type: [Cr(Met)₃]. 2H₂O and Na[Cr(Cys)₂]. 2H₂O were also obtained. The made combination of Cr(III) with the investigated aminoacid and structures of the complexes reported have been proposed on the basis of their spectra. A method for precipitation pure complexes from solutions has been devised using the ion-exchange procese on the resin Sephadex A-25. 1984-01-01T00:00:00Z