Summary
Coordination compounds of transition metal ions with open-shell electron configurations may exhibit dynamic electronic-structure phenomena, depending on the nature of the coordinating ligand sphere. The change of spin state with temperature («thermal spin-crossover»), light-induced electron transfer processes leading to long-lived metastable charge and spin states (e.g., «LIESST» effect), are some of the fascinating electronic games encountered in transition metal compounds, which are presently under extensive study by chemists and physicists. Mössbauer spectroscopy plays a dominant role in the investigation of such phenomena in iron compounds, as will be demonstrated in this paper. This work will focus on selected examples of «thermal spin-crossover» in iron(II) complexes and switching between different spin states by irradiation with light of different wavelength (LIESST effect), demonstrating that Mössbauer spectroscopy besides other physical techniques proves to be a highly elegant tool for following the spin state conversion and the concomitant changes of molecular and crystal structure properties. Finally, Mössbauer emission spectroscopy, both time integral and time differential, has been employed to generate and identify long-lived excited spin states by making use of the nuclear disintegration of 57Co as an intrinsic molecular light source (NIESST=nuclear decay-induced excited-spin-state trapping). Lifetime measurements by optical techniques on LIESST states and by time-differential Mössbauer coincidence spectroscopy on NIESST states prove that the relaxation pathways in the mechanisms for LIESST and NIESST are identical.
Similar content being viewed by others
References
Cambi L. and Cagnasso A., Atti Accad. Naz. Lincei, 13, (1931) 809.
Cambi L. and Szegö L., Ber. Dtsch. Chem. Ges., 64 (1931) 259.
Cambi L., Szegö L. and Cagnasso A., Atti Accad. Naz. Lincei, 15 (1932) 266.
Cambi L., Szegö L. and Cagnasso A., Atti Accad. Naz. Lincei, 15 (1932) 329.
Cambi L. and Szegö L., Ber. Dtsch. Chem. Ges., 66 (1933) 656.
Baker W. A. and Bobonich H. M., Inorg. Chem., 3 (1964) 1184.
Martin R. L. and White A. H., Transition Metal. Chem. (Chem. Soc. N.Y.), 4 (1968) 113.
König E., Coord. Chem. Rev., 3 (1968) 471.
Goodwin H. A., Coord. Chem. Rev., 18 (1976) 293.
Gütlich P., Struct. Bonding (Berlin), 44 (1981) 83.
König E., Ritter G. and Kulshrechta S. K., Chem. Rev., 85 (1985) 219.
Toftlund H., Coord. Chem. Rev., 94 (1989) 67.
Gütlich P. and Hauser A., Coord. Chem. Rev., 97 (1990) 1.
König E., Struct. Bonding (Berlin), 76 (1991) 51.
Gütlich P., Spiering H. and Hauser A., Angew. Chem., 106 (1994) 2109; see also Angew. Chem. Int. Ed. Engl., 33 (1994) 2024.
Ballhausen C. J. and Gray H.B., Molecular Orbital Theory (Benjamin, New York, N.Y.) 1980.
Schläfer H. L. and Gliemann G., Einführung in die Ligandenfeldtheorie (Akademische Verlagsgesellschaft, Wiesbaden) 1980.
König E., Progr. Inorg. Chem., 35 (1987) 527.
Sorai M and Seki S., J. Phys. Soc. Jpn., 33 (1972) 575.
Renovitch G. A. and Baker W. A. jr., J. Am. Chem. Soc., 89 (1967) 6377.
Sorai M., Ensling J. and Gütlich P., Chem. Phys., 18 (1976) 199.
Mikami M., Konno K. and Saito Y., Chem. Phys. Lett., 63 (1979) 566.
Spiering H., Meissner E., Köppen H., Müller E. W. and Gütlich P., Chem. Phys., 68 (1982) 65.
Sanner I., Meissner E., Köppen H., Spiering H. and Gütlich P., Chem. Phys., 86 (1984) 227.
Willenbacher N. and Spiering H., J. Phys. C., 21 (1988) 1423.
Spiering H. and Willenbacher N., J. Phys.: Condens. Matter, 1 (1989) 10089.
Meissner E., Köppen H., Köhler C. P., Spiering H. and Gütlich P., Hyperfine Interact, 36 (1987) 1.
Köhler C. P., Jakobi R., Meissner E., Wiehl L., Spiering H. and Gütlich P., J. Phys. Chem. Solids, 51 (1990) 239.
Drickamer H. G. and Frank C. W., Electronic Transitions and the High Pressure Chemistry and Physics of Solids (Chapman and Hall, London), 1973.
Long F. and Hutchinson B. B., Inorg. Chem., 26 (1987) 608.
Grandjean F., Long G. J., Hutchinson B. B., Ohlhausen L., Neill P. and Holcomb J. D., Inorg. Chem., 28 (1989) 4406.
Yu Z., Schmitt G., Hofmann S., Spiering H., Hsia Y. F. and Gütlich P., Hyperfine Interact., 93 (1994) 1459.
Yu Z., Schmitt G., Böres N., Spiering H. and Gütlich P., J. Phys.: Condens. Matter, 7 (1995) 777.
Franke P. L., Haasnoot J. G. and Zuur A. P., Inorg. Chim. Acta, 59 (1982) 5.
Müller E. W., Spiering H. and Gütlich P., J. Chem. Phys., 79 (1983) 1439.
Decurtins S., Gütlich P., Hasselbach K. M., Hauser A. and Spiering H., Inorg. Chem., 24 (1985) 2174.
Jung J., Spiering H., Yu Z. and Gütlich P., Hyperfine Interact., 95 (1995) 107.
Wiehl L.Acta. Cryst. B, 49 (1993) 289.
Hinek R., PhD thesis, Johannes Gutenberg-Universität Mainz (1995).
Poganiuch P., Decurtins S. and Gütlich P., J. Am. Chem. Soc., 112 (1990) 3270.
Decurtins S., Gütlich P., Köhler C. P., Spiering H. and Hauser A., Chem. Phys. Lett., 105 (1984) 1.
Hauser A., Chem. Phys. Lett., 124 (1986) 543.
Hauser A., J. Chem. Phys., 94 (1991) 2741.
Buhks E., Navon G., Bixon M. and Jortner J., J. Am. Chem. Soc., 102 (1980) 2918.
Adler P., Spiering H. and Gütlich P., Inorg. Chem., 26 (1987) 3840.
Adler P., Poganiuch P. and Spiering H., Hyperfine Interact., 52 (1989) 47.
Adler P., Spiering H. and Gütlich P., J. Phys. Chem. Solids, 50 (1989) 587.
Hinek R., Gütlich P. and Hauser A., Inorg. Chem., 33 (1994) 567.
Sugiyarto K. H. and Goodwin H. A., Aust. J. Chem., 41 (1988) 1645.
Buchen T., Gütlich P. and Goodwin H., Inorg. Chem.33 (1994) 4573.
Cecconi F., Di Vaira M., Midollini S., Orlandini A. and Sacconi L., Inorg. Chem., 20 (1981) 3423.
König E., Ritter G., Kulshrechta S. K., Waigel J. and Sacconi L., Inorg. Chem., 23 (1984) 1241.
Wu C.-C., Jung J., Sena K. M., Gütlich P. and Hendrickson D. N., to be published.
Ensling J., Gütlich P., Hasselbach K. M. and Fitzsimmons B. W., Chem. Phys. Lett., 42 (1976) 232.
Ensling J., Fitzsimmons B. W., Gütlich P. and Hasselbach K. M., Angew. Chem., 9 (1970) 637.
Fleisch J. and Gütlich P., Chem. Phys. Lett., 42 (1976) 237.
Fleisch J. and Gütlich P., Chem. Phys. Lett., 45 (1977) 29.
Fleisch J., Gütlich P. and Köppen H., Radiochem. Radioanalyt. Lett., 42 (1980) 279.
Gütlich P. and Köppen H., J. Phys. (Paris), 41 C1 (1980) 311.
Hennen C., Master's thesis, Johannes Gutenberg-Universität Mainz (1986).
Sano H. and Gütlich P., Hot Atom Chemistry in Relation to Mössbauer Emission Spectroscopy, in Hot Atom Chemistry, edited by T. Matsuura (Kodanski, Tokyo) 1984, pp. 265–302.
Albrecht R., Alflen M., Gütlich P., Kajcsos Zs., Schulze R., Spiering H. and Tuczek F., Nucl. Instrum. Methods A, 257 (1987) 209.
Hennen C., Alflen M., Spiering H. and Gütlich P., Hyperfine Interact., 56 (1990) 1527.
Kahn O., Kröber J. and Jay C., Adv. Mater., 4 (1992) 718.
Köppen H., Müller E. W., Köhler C. P., Spiering H., Meissner E. and Gütlich P., Chem. Phys. Lett., 91 (1982) 348.
Meissner E., PhD thesis, Johannes Gutenberg-Universität Mainz (1984).
Müller E. W., Ensling J., Spiering H. and Gütlich P., Inorg. Chem., 22 (1983) 2074.
Hauser A., Gütlich P. and Spiering H., Inorg. Chem., 25 (1986) 4245.
Author information
Authors and Affiliations
Additional information
Dedicated to Prof. Harry B. Gray on the occasion of his 60th birthday.
Rights and permissions
About this article
Cite this article
Gütlich, P., Jung, J. Fascinating electronic games in iron complexes. Il Nuovo Cimento D 18, 107–136 (1996). https://doi.org/10.1007/BF02458887
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02458887