Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Cobalt(Ⅲ) Complexes of N₄and $N_2O_2$ System Tetradentate Ligands : Amino Acid Cobalt(Ⅲ) Complexes of 1,3-Diaminopropane-N,N'-Di-α-(β-methyl)-Pentanoic Acid

  • Published : 1996.05.20
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Abstract

Amino acid cobalt(Ⅲ) complexes of 1,3-diminopropane-N,N'-di-α-(β-methyl)-pentanoic acid (H2dpdmp), uns-cis-[Co(dpdmp)(aa)] (aa=glycine, S-alanine, R-aspartic acid, sarcosine) have been prepared from the reaction between the uns-cis-[Co(dpdmp)Cl2]- complex and the corresponding amino acid. In the reaction with the uns-cis-[Co(dpdmp)Cl2]- complex, glycine and S-alanine have yielded both merridional and facial isomers, while R-aspartic acid and sarcosine, only merridional isomers. The stereospecific substitution reaction of R-aspartic acid to racemic uns-cis-[Co(dpdmp)Cl2]- complex has yielded two merridional diastereomers; ΛR-uns-cis- and ΛR-uns-cis-[Co(dpdmp)(R-asp)]. It is of interest to note that this is one of the few CoⅢ(ONNO)(aa) type complex preparations, which gives only one isomer with stereospecificity. On the other hand, two merridional products obtained from the reaction of sarcosine with racemic uns-cis-[Co(dpdmp)Cl2]- are turned out to be mixtures of optical isomers.

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References

  1. Jun, M. J.;Ham, H.
  2. Coord. Chem. Rev. v.54 Radonovic, D. J.
  3. Coord. Chem. Rev. v.7 Brubaker, G. R.;Schaefer, D. P.;Worrel, J. H.;Legg, J. I.
  4. Polyhedron v.13 Jun, M. J.;Cheon, J.
  5. Coord. Chem. v.13 Strasak, M.;Bachraty, F. J.
  6. Bull. Korean Chem. Soc. v.11 Jun, M. J.;Cheon, J.;Choi, S. R.
  7. Inorg. Chim. Acta. v.145 Jun, M. J.;Kim, C.;Jung, J.
  8. Inorg. Chim. Acta. v.70 Strasak, M.;Major, K.
  9. Bull. Kor. Chem. Soc. v.11 Jun, M. J.;Park, C.;Park, Y. B.;Cheon, J.;Choi, S. R.
  10. Acta Chem. Scand. Basolo, F.;Ballhausen, C.;Bjerrum, J.
  11. Bull. Chem. Soc. Japan v.29 Shimura, Y.;Tsuchida, R.
  12. Inorg. Chem. v.8 Kothari, V. M.;Busch, D. H.
  13. Inorg. Chem. v.13 Halloran, L. J.;Legg, J. I.
  14. Bull. Chem. Soc. Japan v.52 Hidaka, J.;Igi, K.;Okabayashi, M.
  15. Inorg. Chem. v.5 Denning, R. G.;Piper, T. S.
  16. Inorg. Chem. v.10 Legg, J. L.;Steel, J.