Summary
The magnetic properties of copper(II) maleate monohydrate, Cu(C4H2O4)·H2O, have been measured in the 1.8–66 K range. Magnetic susceptibility and isothermal magnetization measurements on powdered samples reveal a transition to a ferromagnetic state in this layered compound. The transition to the ordered state occurs at Tc=4.0 K. The positive value of 8.0 K for the Weiss constant in the paramagnetic region confirms the ferromagnetic nature of the interactions. The magnetic susceptibility data above 3Tc may be fitted with a Heisenberg quadratic layer expression with the best-fit parameters J=+4.3 cm−1, g=2.0, and zJ′=+0.42 cm−1. The e.p.r. spectrum at room temperature indicates orthorhombic symmetry. A complex containing the isomeric form of the ligand, copper(II) fumarate dihydrate, has also been prepared and its magnetic properties determined in the 80–300 K range. The data may be accomodated by two-dimensional theory with J=+1.05 cm−1, g=2.09, and zJ′=+0.10 cm−1.
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References
Syntheco, Inc., 1920 Industrial Pike, Gastonia, N.C., 28052
E. I. Dupont de Nemours, Research Triangle Park, N.C.
C. K. Prout, J. R. Carruthers and F. J. C. Rossotti,J. Chem. Soc. (A), 3342 (1971).
P. J. Corvan, W. E. Estes, R. R. Weller and W. E. Hatfield,Inorg. Chem.,19, 1297 (1980).
D. B. Brown, V. H. Crawford, J. W. Hall and W. E. hatfield,J. Chem. Phys.,81, 1303 (1977).
B. N. Figgis and J. Lewis, in J. Lewis and R. G. Wilkins (Eds.),Modern Coordination Chemistry, Interscience: New York, 1960; Chapter 6, p. 403.
E. Konig,Magnetic Properties of Transition Metal Compounds, Springer-Verlag, West Berlin, 1956.
R. R. Weller and W. E. Hatfield,J. Chem. Educ.,56, 652 (1979).
G. A. Baker, H. E. Gilbert, J. E. Rushbrooke and G. S. Rushbrooke,Phys. Lett.,25A, 207 (1967).
M. S. Cacesi and W. P. Cacheris,Byte, May, 340 (1984).
J. A. Nelder and R. Mead,Computer Journal,7, 308 (1965).
G. S. Rushbrooke and P. J. Wood,Mol. Phys.,1, 257 (1958).
B. R. Rohrs, unpublished results.
J. S. Smart,Effective Field Theories of Magnetism, W. B. Saunders Co. Philadelphia, 1966, Chapter 3.
D. B. Losee and W. E. Hatfield,Phys. Rev. B.,10, 1122 (1974).
Y. Yamamoto, M. Matsuura and T. Haseda,J. Phys. Soc. Jpn,40, 1300 (1976).
L. W. ter Haar and W. E. Hatfield,Mol. Cryst. and Liq. Cryst.,107, 171 (1984).
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Padilla, J., Hatfield, W.E., Wasson, J.R. et al. Ferromagnetic long range ordering in copper(II) maleate monohydrate. Transition Met Chem 14, 217–220 (1989). https://doi.org/10.1007/BF01043799
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DOI: https://doi.org/10.1007/BF01043799