75349-02-9Relevant academic research and scientific papers
Non-covalent Interactions in Metal Complexes. II. Induction of Asymmetry in Cobalt(III) Complexes with Amino Acid-Schiff Bases. Importance of CH...?-Interaction in Determining Configuration of Complexes
Okawa, Hisashi,Numata, Yoshihiko,Mio, Ayako,Kida, Sigeo
, p. 2248 - 2251 (1980)
Cobalt(III) complexes, - and - (aa=ala-, val-, leu-, phe-), where H2(l-mop=aa) and H2(cop=aa) denote amino acid-Schiff bases of l-menthyl 3-(o-hydroxybenzoyl)propionate and cholesteryl 3-)o-hydroxybenzoyl)propionate, respectively, were prepared in solution.The intensity of the CD peak induced at 520 nm changes with the solvent used for preparation of the complex, decreasing in the order: ethanol, methanol, dimethyl sulfoxide, N,N-dimethylformamide and acetonitrile.Since the order corresponds to the increasing order of the CH..?-interaction between the solvent and benzene, it seems that the CH..?-interaction between the chiral group and the aromatic nucleus in the ligand plays an important role in determinig the configuration of the complexes.
