Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Preparation and Stereochemistry of Cobalt(III) Complexes Containing N-Methylbis(2-aminoethyl)amine
Masaaki KojimaMasaru IwagakiYuzo YoshikawaJunnosuke Fujita
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1977 Volume 50 Issue 12 Pages 3216-3221

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Abstract

Seven new cobalt(III) complexes containing N-methylbis(2-aminoethyl)amine (4-methyldiethylenetriamine, abbreviated as dema) were prepared and their structures were determined by electronic, circular dichroism, and PMR spectroscopy. For the mixed [Co(dien) (dema)]3+ complex (dien=diethylenetriamine), three geometric isomers, s-fac, u-fac, and mer were isolated. The [Co(dema)2]3+ complex formed only s-fac isomer. A conformational analysis was carried out to compare the stability of these geometric isomers.

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