광학활성 2,4-pentanediamine을 포함하는 Co(Ⅲ) 착물의 원평광이색성 스펙트라 = Circular Dichroism Spectra of Cobalt (Ⅲ) Complexes Containing Optically Active 24-Pentanediamine

다국어 초록 (Multilingual Abstract)

The circular dichroism(CD) spectra of trans-[Co(S,S-ptn)₂(NO)₂)₂]Bph₄ and △-[Co(R,R-ptn)₃](Bph₄)₃ complexes are reported for an extended series of solvents, where S,S- and R,R-ptn are (S,S)- and (R,R)-2,4-pentanediamine. The CD magnitude of both complexes varies significantly with solvent variations in the first absorption band region. The solvation of trans-[Co(S,S-ptn)2(NO₂)₂] Bph₄, which was studied by IH NMR, showed a stereoselective hydrogen-bond formation with the equatorial N-H protons. This affected a decrease in the CD spectra. And it is reported that the variation of CD spectrum of △-[Co(R,R-ptn)₃] (Bph₄)₃ in ¹A_(lg)∼ ¹Ea transition region is roughly decreased as the donor number of the solvent is decreased, and that the access of the solvent with great donor power along the C₂ axis of the compex is greater than the solvent with great donor power.