ScienceAsia 18 (1992): 151-161 |doi: 10.2306/scienceasia1513-1874.1992.18.151

MACROBICYCLIC COBALT(III) HEXAAMINE COMPLEXES BASED ON TRIS(PROPYLENEDIAMINE) COBALT(III)

SOONTAREE BENJARVONGKULCHAI, ANUSAK KAEWHOM AND PATRANIT WAITAYASUWAN

ABSTRACT: The cage complexes : ,fac-lel₃,-[Co (N0₂)₂Me₃sar]³⁺ (1) (where (N0₂)₂Me₃sar = 1,8-dinitro-(4R, 12R, 17R)-trimethyl-3,6,10,13,16,19-hexaazabicyclo[6.6.6] eicosane) and ,fac-lel₃,-[Co(Me₃sep)]³⁺ (3) (where (Me₃sep) = (4R,12R,17R)-trimethyl-1,3,6,8,10,13,16,19-octaazabicyclo[6.6.6] eicosane) and their corresponding halfcage complexes : ,fac-lel₃,-[Co(N0₂Me₃semisar)]³⁺ (2) (where (N0₂Me₃semisar) = tris(((2-aminopropyl) amino) methyI)nitromethane) and ,fac-lel₃,-[Co (Me₃semisep)]³⁺ (4) (where (Me₃semisep) = rris(((2-aminopropyl) amino) methyl)amine) are synthesized from ,fac-lel₃,-[Co (R)(-)pn₃]³⁺. Likewise their A-enantiomers are synthesised from ,fac-lel₃,-[Co (S)(+)pn₃]³⁺. The specific rotations, infrared spectra, visible spectra, nuclear magnetic resonance spectra and oxidation-reduction potentials are recorded.

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Department of Chemistry, Faculty of Sdence, Silpakorn University, Nakorn Pathom 73000, Thailand.
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Received August 12, 1992