The Reduction of Alkylcobalt Macrocycles with Metal Ions

• Main Authors: Ku, Tsung-Yao, 古宗耀
• Other Authors: Lee, Shao-Yung
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/32825308775491894771

碩士 === 義守大學 === 生物技術與化學工程研究所 === 92 === Since the discovery that coenzyme B12 contains a cobalt-carbon bond and this bond dissociation is important to promote enzymatic rearrangements, a large number of new organocobalt macrocyclic complexes have been prepared and characterized. The knowledge of the Co-C bond dissociation energy and of the factors that affect such bond dissociation energy of these complexes has been developed extensively. In this thesis, the reduction reactions of various organocobalt macrocyclic complexes with different ions, Cr2+ and V2+, were studied kinetically. The influence of steric effect that consists of the size of the alkyl group on the cobalt, the variety and the configuration of the ligand on this reaction was investigated.