AbstractsBiology & Animal Science

Origin of chirality in charge transfer bands of Cu(II) acidates

by Sergio Bunel




Institution: Universidad de Chile
Department:
Year: 1981
Keywords: Cu(II); Chirality; Aminoacids
Record ID: 1097005
Full text PDF: http://www.captura.uchile.cl/handle/2250/13905


Abstract

Complexes of Cu(II) with L-aminoacids have positive charge transfer bands in their CD spectra at ca.230 nm and negative at ca. 270 nm. Examination of complexes with L-1,2-diamino propane shows that the positive band is due to charge transfer from nitrogen and the negative from oxygen to copper. This sign difference is consistent with a theoretical model. The effects of added nonchiral ligands on the CD spectra in the charge transfer region are analyzed.