X-ray structure analysis, electronic and vibrational circular dichroism of chiral-at-metal dioxidovanadium(V) complexes with amino acids derived Schiff base ligands
作者： Lukáš Krivosudský , Peter Schwendt , Róbert Gyepes , Zdirad Žák
DOI: 10.1016/J.POLY.2014.06.052
关键词:
摘要: Abstract Five new chiral dioxidovanadium Schiff base complexes derived from l -valine, -leucine, -histidine, -threonine and d were synthesized characterized by elemental analysis, 1H 51V NMR IR spectra. The absolute configurations of the determined X-ray single crystal analysis in solid state electronic vibrational circular dichroism CH3CN solution. -threoninato complex, which contains two stereogenic centers amino acid site, does not show epimerization acid, contrast with analogical isoleucine-derived reported recently. Conglomerate crystallization was observed racemic dl -valine- -threonine-derived complexes.
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