Complexes with Diastereoisomeric Ligands. 1. Copper(II) Complexes with the Tridentate Schiff Bases of (lR)-3-(Hydroxymethylene)camphor or (1R)-2-(Hydroxymethylene)menthone and (S)- or (R)-Amino Acids

Luigi Casella, Michele Gullotti, Alessandro Pasini, Antal Rockenbauer

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Copper(II) complexes with tridentate Schiff bases derived by the condensation of (+)-(hydroxymethylene)camphor or (+)-(hydroxymethylene)menthone with a series of (S)- and (R)-amino acids have been synthesized. Little interaction between the various chiral centers has been found and the conformation of the chelate rings depends mainly on the configuration of the α-carbon atom of the amino acid. ESR and electronic spectra results indicate that a competitive mechanism between the σ and π bondings, as well as between the different kinds of σ bondings of the complex, is operative. The variations of the K Fermi term are interpreted by considering an exchange polarization of the partially filled 4s orbital.

Original languageEnglish
Pages (from-to)2825-2835
Number of pages11
JournalInorganic Chemistry
Volume18
Issue number10
DOIs
Publication statusPublished - Jan 1 1979

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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