Abstract
Coordination compounds may be regarded in a rough approximation as compounds in which the d orbitals are not deeply involved in the bonding. With this in mind the configuration of the free ion can be a good starting point. The splitting of the five d orbitals may be considered as arising either from the electrostatic repulsion due to the donor atoms or from their different anti-bonding character due to the coordination bond. The metal ions in a coordination compound have a number of unpaired electrons which depend on the dn configuration and on the overall symmetry of the molecule. When n is odd, of course there will be at least one unpaired electron; however, in order to know the number of unpaired electrons, the relative energies of the d orbitals should be known and the n electrons should be placed in these orbitals according to the Aufbau principle. The relative energies of the d orbitals depend on the metal-donor bond strength and on the symmetry around the metal ion (Fig. 1 and Table 1). Our interest in this chapter will be limited only to systems with net unpaired electrons.
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Bertini, I., Gatteschi, D., and Scozzafava, A.: 1977, Isr. J. Chem. 15, p. 189.
Hathaway, B. J., and Billing, D. E.: 1970, Coord. Chem. Rev. 5, p. 143.
Barbucci, R., Bencini, A., and Gatteschi, D.: 1977, Inorg. Chem. 16, p. 2117.
Reedijk, J., and Nieuwenhuise, 1972, Rec. Trav. Chim., 91, p. 533.
Abragam, A., and Bleaney, B., “Electron Pramagnetic Resonance of Transition Ions”, Clarendon Press, Oxford, 1970, p. 436.
Bloembergen, N., and Morgan, L. O.: 1961, J. Chem. Phys. 34, p. 842.
Wishnia, A.: 1960, J. Chem. Phys. 32, p. 871.
Baker, J. M., Bleaney, B., and Bowers, K. D.: 1956, Proc. Phys. Soc. B, p. 1205.
Eisinger, J., Shulman, R.G., and Szymanski, B. M.: 1962, J. Chem. Phys. 36, p. 1721.
Luz, Z., and Meiboom, S.: 1964, J. Chem. Ohys. 40, p. 1508.
Fabry, M. E., Koenig, S. H., and Shillinger, W. E.: 1970, J. Biol. Chem. 245, p. 4526.
Luz, Z., and Meiboom, S.: 1964, J. Chem. Phys. 40, p. 1066.
McConnell, H.: 1956, J. Chem. Phys. 25, p. 709.
Bencini, A., Bertini, I., Gatteschi, D., and Scozzafava, A.: 1978, Inorg. Chem. 17, p. 3194.
Bertini, I., Canti, G., Kozlowski, H., and Scozzafava, A.: J. C. S. Dalton, in press.
Lewis, W. B., and Morgan, L. O.: 1968, Trans. Metal Chemistry 4, p. 33.
Bassetti, V., Burlamacchi, L., and Martini, G.: J. Amer. Chem. Soc., in press.
Bertini, I., Luchinat, C., Mani, F., and Scozzafava, A.: unpublished results.
Bertini, I., Canti, G., Luchinat, C., and Scozzafava, A.: 1978 J. Amer. Chem. Soc. 100, p. 4873.
Bertini, I., Canti, G., Luchinat, C., and Scozzafava, A.: 1978, J. C. S. Dalton, p. 1269.
Bertini, I., Luchinat, C., and Scozzafava, A.: 1978, FEBS Letters 87, p. 92.
Bertini, I. Borghi, E., and Luchinat, C.: 1978, Bioinorg. Chem. 9, p. 495.
Bertini, I., Canti, G., Luchinat, C., and Scozzafava, A.: Inorg. Chim. Acta, in press.
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© 1980 D. Reidel Publishing Company, Dordrecht, Holland
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Bertini, I. (1980). The Electronic Ground State of 3d Metal Ions with Respect to the ESR and NMR Experiment. In: Bertini, I., Drago, R.S. (eds) ESR and NMR of Paramagnetic Species in Biological and Related Systems. Nato Advanced Study Institutes Series, vol 52. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-9524-6_9
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DOI: https://doi.org/10.1007/978-94-009-9524-6_9
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