Naslov
Proučavanje bakrovih(II) kompleksa s L-alfa-aminokiselinama metodom elektronske paramagnetske rezonancije
(An Electron Paramagnetic Resonance Study of Copper(II) Complexes with L-alpha-Amino Acids)

Autori
Mirosavljević, Krunoslav

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

Izvornik
The 2002 Younger European Chemists' Conference / Wharton, Eric - Heidelberg : SET for EUROPE i GDCh-Jungchemikerforum Heidelberg, 2002

Skup
The 2002 Younger European Chemists' Conference

Mjesto i datum
Heidelberg, Njemačka, 30.09.2002. - 02.10.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aminokiseline; bakrovi(II) kompleksi; Brownovo gibanje; EPR
(amino acids; copper(II) complexes; Brownian motion; EPR)

Sažetak
In order to investigate importance of a conformation of the amino acid side chains in water binding or water release to the copper(II) ion in complexes with long aliphatic side chains the temperature dependece of Brownian motion of aquabis[N, N-dimetyl-L-alpha-alaninato] copper(II) and aquabis[N, N-dimetyl-L-alpha-isoleucinato]copper(II) was studied by EPR spectroscopy. The reorientation correlation time, t, describing Browniain motion of the studied complexes dissolved in different solvents was calculated from the analysis of the EPR spectra. Linear temperature dependece of t on viscosity to temperature ratio, obtained for the alaninato complex suggested one conformation of the aquacomplex in the examined temperature interval. More complex temperature dependence obtained for the isoleucinato complex, suggests a conformation change of the amino acid side chains above 300 K concomitant with the release of the apical water molecule from the copper(II) ion coordination sphere.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA