Decarboxylation of an α-amino acid coordinated to cobalt(III): kinetic stabilisation and molecular structure of a Co–C–N three-membered ring incorporated into a cobalt(III) macrocyclic ligand complex†‡

Abstract

Photochemically-induced decarboxylation of a cobalt(III) cyclam complex bearing two coordinated N-carboxymethyl pendant arms results in kinetic stabilisation of the resulting aminoalkyl three-membered Co–C–N ring, which has been characterised by an X-ray crystal structure determination.

References

1. J. M. Harrowfield, A. M. Sargeson and P. O. Whimp, Inorg. Chem., 1991, 30, 1792.
2. A. L. Poznyak and V. I. Pavlovski, Angew. Chem., Int. Ed. Engl., 1988, 27, 773.
3. E. Natarajan and P. Natarajan, Inorg. Chem., 1992, 31, 1215.
4. H. Kawaguchi, M. Yoshida, T. Yonemura, T. Ama, K. Okamoto and T. Yasui, Bull. Chem. Soc. Jpn., 1995, 68, 874; A. L. Poznyak, V. I. Pawlowski, L. M. Schkolnikowa, N. M. Djatlowa and A. B. Iljuchin, J. Organomet. Chem., 1986, 314, C59; A. V. Gasparyan, L. M. Shkol'nikova, V. K. Bel'skii, A. L. Poznyak, V. E. Stel'mashok and N. M. Dyatlova, Koord. Khim., 1987, 13, 1710; L. M. Shkol'nikova, A. V. Gasparyan, V. K. Bel'skii, V. E. Stel'mashok, A. L. Poznyak and N. M. Dyatlova, Koord. Khim., 1987, 13, 823.
5. A. L. Poznyak, V. I. Pavlovski, E. B. Chuklanova, T. N. Polynova and M. A. Porai-Koshits, Monatsh. Chem., 1982, 113, 561; E. B. Chuklanova, T. N. Polynova, M. A. Porai-Koshits, A. L. Poznyak and V. I. Pavlovskii, Koord. Khim., 1988, 14, 103.
6. P. J. Brothers, G. R. Clark, H. R. Palmer and D. C. Ware, Inorg. Chem., 1997, 37, 5470.
7. D. C. Ware, D. M. Tonei, L.-J. Baker, P. J. Brothers and G. R. Clark, Chem. Commun., 1996, 1303.
8. J. A. Huheey, E. A. Keiter and R. L. Keiter, Inorganic Chemistry, Harper Collins, New York, 2nd edn., 1993, p. A-30.
9. M. P. Granchi and B. E. Douglas, Inorg. Nucl. Chem. Lett., 1978, 14, 23.
10. S. M. Polson, L. Hansen and L. G. Marzilli, J. Am. Chem. Soc., 1996, 118, 4804.
11. C.-K. Poon, W.-K. Wan and S. S. T. Liao, J. Chem. Soc., Dalton Trans., 1977, 1247.
12. SMART & SAINT, Siemens Analytical Instruments Inc., Madison, Wisconsin, USA, 1994.
13. R. H. Blessing, Acta Crystallogr., Sect. A, 1995, 51, 33.
14. G. M. Sheldrick, SHELXS-97, Program for the Solution of Crystal Structures, Universität Göttingen, Germany, 1990; SHELXTL, Siemens Analytical Instruments Inc., Madison, Wisconsin, USA, 1994.
15. G. M. Sheldrick, SHELXL-93, Program for the Refinement of Crystal Structures, Universität Göttingen, Germany, 1997.
16. Enraf-Nonius, CAD-4 Software, Delft, The Netherlands, 1989.
17. A. C. T. North, D. C. Phillips and F. S. Matthews, Acta Crystallogr., Sect. A, 1968, 24, 351.