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Abstrakty
Crystal and molecular structures of ammonium hexabromorhenate (NH4)2ReBr6 have been determined by the heavy atom method. The title compound crystallizes red-violet crystals in the space group Fm3m with Z = 4. The Re atom is of six-coordinate octahedral configuration, being bonded to six bromide anions. The magnetic behaviour of (NH4)2ReBr6 has been investigated over the temperature range 1.72-300 K. These measurements revealed that this compound is an antiferromagnet with Neél temperature TN = 15.5 K. The magnetic data are interpreted in terms of zero-field splitting of the ground 4A2g term (D = 22.8 cm-1), large because of the high spin-orbit coupling constant for the Re+4 ion, with antiferromagnetic exchange coupling (J = -17.7 cm-1).
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Tom
Strony
285--293
Opis fizyczny
Bibliogr. 19 poz., rys.
Twórcy
autor
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
autor
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
autor
- Institute of lnorganic and Anafytical Chemistry, Freie Unńersitat Berlin, Fabeckstr. 34-36, D-14195 Berlin, Germany
autor
- Institute of lnorganic and Anafytical Chemistry, Freie Unńersitat Berlin, Fabeckstr. 34-36, D-14195 Berlin, Germany
autor
- Laboratoire de Chimie Inorganique et Materiaux Moleculaires ESA 7071 CNRS, Universitó Pierre et Marie Curie, 75252 Paris Cedex 05, France
Bibliografia
- 1.Ferlay S., Mallah T., Ouahes R., Veillet P. and Verdaguer M., Nature, 378, 701 (1995).
- 2.Kahn O., Molecular Magnetism, VCH: NY,(1993).
- 3.MallahT., Ferlay S.,Auberger C., Helary C., L’Hermite F.,Ouahes R., Vaissermann J.,Verdaguer M. and Veillet P., Mol. Cryst. Liq. Cryst., 273,141 (1995).
- 4.Kahn O., Structure Electronique des Elements de Transition, Presses Universitaires de France, Paris, (1977).
- 5.Chiozzone R., Gonzalez R., Kremer C, De Munno G., Cano J.,Lloret F.,Julve M. and FausJ., Inorg. Chem., 38,4745 (1999).
- 6.Figgis B.N., Lewis J. and Mabbs F.E., J. Chem. Soc, 3138 (1961).
- 7.MrozińskiJ.,Bull. Acad. Polon. Sci., 26, 789 (1978).
- 8.Mroziński J.,Bull. Acad. Polon. Sci., 28, 559 (1980).
- 9.Kleinberg J. Ed.,Inorganic Syntheses, Mc.Graw-Hill, NY,(1963), Vol. Vn, p. 189.
- 10. Tomkiewicz A., Villain F. and Mroziński J., J. Mol. Struct., 555,383 (2000).
- 11.Michalowicz A.,EXAFS pour le Mac ,Logiciel pour la Chimie, Soc.Franc. Chim., Paris, pp. 102(1991).
- 12.Lengeler B. and Eisenberger R, Phys. Rev. B, 21,4507 (1980).
- 13.Zabinsky S.I.,Rehr J.J., Ankudinov J.J., Albers R.C. and Eller M.J., Phys. Rev. B, 52,2995 (1995).
- 14.Briscoe H.V.A.,Robinson P.L. and Rudge A.J., J. Chem. Soc, 3219(1931).
- 15.König E., Magnetic Properties of Coordination and Organometallic Transition Metal Compounds, Springer, Verlag, Berlin,(1966).
- 16.Teo B.K.,EXAFS Basic Principles and Data Analysis, Springer, Berlin, (1986).
- 17.Reynolds P.A., Delfs Ch.D., Figgis B.N., Henderson M.J., Moubaraki B., and Murray K.S., J. Chem. Soc. Dalton Trans., 2309 (1992).
- 18.Coronado E., Drillon M., Nugteren P.R., de Jongh L.J. and Beltran D., J. Am. Chem. Soc, 110, 3907 (1988).
- 19.Nakamoto K.,Infrared and Raman Spectra of Inorganic and Coordination Compounds, 4ed. J. Wiley & Sons, NY,(1986)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ1-0020-0030