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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 18, Number 8
BKCSDE 18(8)
August 20, 1997 

 
Title
Cobalt(Ⅲ) Complexes of 1,3-Diaminopropane-N,N'-di-α-(β-methyl)-pentanoic Acid
Author
Hyeyoung Ham, Young-Joon Park, Moo-Jin Jun*
Keywords
Abstract
A novel ONNO-type tetradentate ligand, 1,3-diaminopropane-N,N'-di-α-(β -methyl)-pentanoic acid (H2apmp) and its cobalt(Ⅲ ) complexes, [Co(apmp)X2]n+, (X=Cl-, NO2-, H2O, X2=CO32-, en, L-phenylalanine) have been synthesized. During the preparation of the dichloro cobalt(Ⅲ) complex of apmp, [Co(apmp)Cl2]-, the ligand has coordinated to the cobalt(Ⅲ) ion in a geometric selectivity to give only the uns-cis isomer and, during the substitution reaction between L-phenylalanine and [Co(apmp)Cl2]-, the L-phenylalanine has coordinated to the cobalt(Ⅲ) ion in a geometric selectivity to give only an uns-cis-meridional isomer. It is of interest that this is a rare case of the [Co(ONNO ligand)X2]n+-type complex preparations, which gives only an uns-cis isomer with geometric selectivity.
Page
827 - 831
Full Text
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