Naslov
Ciklička voltammetrija kompleksa bakra(ii) s N, N-dimetiliranim L-aminokiselinama
(Cyclic voltammetry of copper(ii) complexes with N, N-dimethylated L-amino acids)

Autori
Branica, Gina ; Sabolović, Jasmina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XIX. hrvatski skup kemičara i kemijskih inženjera : Knjiga sažetaka = Book of abstracts ; Post C-32 / Rapić, Vladimir ; Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 2005, 202-202

ISBN
953-6894-23-8

Skup
Hrvatski skup kemičara i kemijskih inženjera (19 ; 2005)

Mjesto i datum
Opatija, Hrvatska, 24.04.2005. - 27.04.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
copper; amino acids; cyclic voltammetry

Sažetak
The study of the stability of copper(II) complexes with N-alkyl and N, N-dialkyl amino acid such as alanine, which does not have bulky amino acid side chains that could form aliphatic-aliphatic van der Waals interactions, showed that the lengthening of the N-alkyl chain (from methyl to propyl) lowered the copper(II) ability to bind the ligand. The stability constants lowered with the size of the substitutients through the methyl to the ethyl derivative after which they did not substantially change with the length of the aliphatic chain [1]. The explanation for the phenomenon was found in stereochemical reasons as provided by the theoretical conformational analysis made for the copper(II) complexes with N, N-dialkylated L-alanines [2]. This poster presents the results of electrochemical measurements of bis-copper(II) complexes with N, N-dimethylated L-valine, L-isoleucine and L-leucine to study the influence of different amino acid residues on the electrochemical behaviour of the complexes. By using cyclic voltammetry the oxidation-reduction potentials were determined. The measurements were done in non-complexing electrolyte (NaClO4) under physiological conditions (I=0.15 mol/L). [1] G. Branica, N. Paulić, B. Grgas, D. Omanović, Chem. Spec. Bioavail., 11, 125-134 (1999). [2] B. Kaitner, N. Paulić, G. Pavlović, J. Sabolović, Polyhedron, 18, 2301-2311 (1999).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA