Informace o publikaci

X-ray structure analysis, electronic and vibrational circular dichroism of chiral-at-metal dioxidovanadium(V) complexes with amino acids derived Schiff base ligands

Autoři

KIVOSUDSKY L. SCHWENDT P. GYEPES R. ŽÁK Zdirad

Druh Článek v odborném periodiku
Časopis / Zdroj Polyhedron
Fakulta / Pracoviště MU

Středoevropský technologický institut

Citace
www http://ac.els-cdn.com/S0277538714004628/1-s2.0-S0277538714004628-main.pdf?_tid=b442f3b8-c286-11e4-8ce3-00000aacb362&acdnat=1425484633_babee770a070cd3e059e7f6aeafe067d
Doi http://dx.doi.org/10.1016/j.poly.2014.06.052
Obor Anorganická chemie
Klíčová slova Vanadium complexes; Absolute configuration; Circular dichroism; Schiff bases; Chirality
Popis Five new chiral dioxidovanadium Schiff base complexes derived from L-valine, L-leucine, L-histidine, L-threonine and D-threonine were synthesized and characterized by elemental analysis, H-1 and V-51 NMR and IR spectra. The absolute configurations of the complexes were determined by X-ray single crystal analysis in solid state and by electronic and vibrational circular dichroism in CH3CN solution. The L-threoninato complex, which contains two stereogenic centers in the amino acid site, does not show epimerization of the amino acid, in contrast with the analogical isoleucine-derived complexes reported recently. Conglomerate crystallization was observed in racemic DL-valine- and DL-threonine-derived complexes. (C) 2014 Elsevier Ltd. All rights reserved.