Chiroptical properties of some unidentate copper(II) imidate-amine complexes in nonaqueous media

✍ Scribed by F. Kerek; G. Snatzke

• Book ID: 104139135
• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 668 KB
• Volume: 24
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)93869-6

✦ Synopsis

Optically active amines Am* induce relatively strong Cotton effects within the d +d bands in their unidentate neutral complexes of the type [CuIm,-Am:] (CuImz = Copper imidate as e.g. CuSuz, Su = succinimidate). The stability constant KI for the first dissociation step [CuSuzBu~] $ [CuSuzBu*] t Bu* was determined from circular dichroism measurements in methylene chloride solution to be KI = 2.15 X IO2 rnor' 1. Rotational isomerism around the Cu-N bond of the imidate moieties is suggested as the reason for the different absorption properties of the complexes in crystalline state and in solution.