Coordination abilities in aqueous 1∶1 metal chelates of 1,3-dicarbonylic ligands: absolute hardness and absolute electronegativity

Abstract

For a series of monochelates of metal and oxo-metal ions such as Ni²⁺, Co²⁺, Cu²⁺, Fe³⁺, Cr³⁺, VO²⁺, and UO₂²⁺ with structurally similar 1,3-dicarbonylic ligands it has been found that the logarithms of stability constants are essentially linear functions of the ligand pK. Correlation data show that for a given transition metal ion it is possible to estimate approximate stability constants of a wide range of 1,3-dicarbonylic monochelates and, therefore, predict overall equilibrium constants.

Results have provided information concerning absolute hardness and absolute electronegativity of the metal ion considered against the stability of 1∶1 chelates in aqueous solution.

References

1. C. A. Blanco and M. J. Hynes, Can. J. Chem., 1992, 70, 2285.
2. J. M. Hoffman, Jr., C. S. Rooney, W. S. Saari, J. S. Wai, T. M. Williams, D. L. Bamberger and J. H. Jones, (Merck and Co., Inc.), Eur. Pat. Appl. E.P. 462,800, 1991.
3. M. A. Ribeiro Da Silva, Nato AS Ser., Ser. C, Thermochem. Its Appl. Chem. Biochem. Syst., 1984, 119, 317.
4. W. W. Porterfield, Inorganic Chemistry, Addison Wesley, Reading, MA, 1983.
5. D. F. Shriver, P. Atkins and C. H. Langford, Inorganic Chemistry, 2nd edn., W. H. Freeman, New York, 1994.
6. J. E. Huheey, Inorganic Chemistry: Principles of Structure and Reactivity, 3rd edn., Harper and Row, Cambridge, 1983.
7. A. I. Vogel, Textbook of Quantitative Chemical Analysis, 5th edn., revised by G. H. Jeffrey, J. Bassett, J. Mendham and R. C. Dempsey, Longman, UK, 1989.
8. A. Johansson, Analyst (London), 1970, 95, 535.
9. P. Gans, A. Sabatini and A. Vacca, J. Chem. Soc., Dalton Trans., 1985, 1195.
10. P. Maroni and J. P. Calmon, Bull. Soc. Chim. Fr., 1964, 519.
11. P. Job, Ann. Chim., 1928, 9, 113; J. Rose, Dynamic Physical Chemistry, p. 501, Pitman, London, 1961.
12. J. H. Yoe and A. L. Jones, Ind. Eng. Chem. Anal. Ed., 1944, 16, 111.
13. G. Ginzburg, Talanta, 1976, 23, 149.
14. A. Ringbom, Formación de complejos en Química Analítica, S. A. Alhambra, Madrid, 1979.
15. C. A. Blanco, J. M. Romero and J. Verdú, Int. J. Chem. Kinet., 1993, 25, 1005.
16. K. A. K. Ebraheem, S. T. Hamdi and M. N. Khalaf, Can. J. Spectrosc., 1981, 26, 225.
17. R. G. Pearson, Struct. Bonding. (Berlin), 1993, 80, 1.
18. R. G. Pearson, Inorg. Chem., 1988, 27, 734.
19. G. Klopman, J. Am. Chem. Soc., 1968, 90, 223.
20. B. Pulman and K. Yagi, Water and Metal Cations in Biological Systems, Japan Scientific Societies Press, Tokyo, 1980.
21. R. G. Parr and W. Yang, Density-functional theory of atoms and molecules, Oxford University Press, New York, 1989.
22. R. G. Pearson, Coord. Chem. Rev., 1990, 100, 403.
23. R. G. Pearson, J. Am. Chem. Soc., 1986, 108, 6109.
24. R. D. Shannon, Acta Crystallogr., Sect. A, 1976, A32, 751.
25. S. Ahrland, Struct. Bonding. (Berlin), 1966, 1, 207.
26. R. G. Pearson, Acc. Chem. Res., 1990, 23, 1.
27. J. M. Hernando, O. Montero and C. A. Blanco, J. Solution Chem., 1990, 19, 1191.
28. M. J. Hynes and M. T. O'Shea, Inorg. Chim. Acta, 1983, 73, 201.
29. M. J. Hynes and B. D. O'Regan, J. Chem. Soc., Dalton Trans., 1979, 1, 162.
30. R. G. Pearson and O. P. Anderson, Inorg. Chem., 1970, 9, 39.
31. M. J. Hynes and B. D. O'Regan, J. Chem. Soc., Dalton Trans., 1980, 1, 7.
32. M. J. Hynes and B. D. O'Regan, Proc. R.I.A., 1977, 77, 285.
33. M. J. Hynes and M. T. O'Shea, J. Chem. Soc., Dalton Trans., 1983, 2, 331.
34. M. R. Jaffe, D. P. Fay, M. Cefola and N. Sutin, J. Am. Chem. Soc., 1971, 93, 2878.
35. M. J. Hynes and B. D. O'Regan, J. Chem. Soc., Dalton Trans., 1976, 13, 1200.
36. R. L. Kelly, J. Phys. Chem. Ref. Data, 1987, 16, Suppl. 1.
37. C. E. Moore, Ionization Potentials and Ionization Limits, Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, NSRDS-NBS 34.