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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 11, Number 3
BKCSDE 11(3)
March 20, 1990 

 
Title
Alanine and S-Methylcysteine Cobalt (Ⅲ) Complexes of Ethylenediamine-N,N'-di-α-butyric Acid
Author
Moo-Jin Jun*, Jin Woo Cheon, Sung Rack Choi
Keywords
Abstract
L-Alanine(L-ala) and S-methyl-L-cysteine(L-mcy) cobalt(Ⅲ) complexes of a flexible N2O2-type tetradentate ligand ethylenediamine-N,N'-di-α -butyric acid(eddb), s-cis-[Co(eddb)(L-ala)] and s-cis-[Co(eddb)(L-mcy), have been prepared via the substitution reactions of the s-cis-[Co(eddb)Cl2]-complex with, respectively, L-alanine and S-methyl-L-cysteine. Both L-alanine and S-methyl-L-cysteine are found to coordinate to the cobalt(Ⅲ) ion via the nitrogen and oxygen donor atoms to give the meridional s-cis isomer. Electronic absorption, ir and pmr spectra are used to characterize the complexes obtained in this work along with elemental analysis data.
Page
251 - 253
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