Abstract
Six new dinuclear or trinuclear FeIII complexes involving tetradentate Schiff bases N,N′-bis(salicylidene)ethylenediamine (salenH2) or bis(salicylidene)-o-phenylenediamine (salophH2) with 2,5-pyridinedicarboxylic acid, acetylenedicarboxylic acid or 1,3,5-benzenetricarboxylic acid have been synthesized and characterized by means of elemental analysis, i.r. spectroscopy, thermal analyses, conductivity measurements and variable-temperature magnetochemical measurements to the temperature of liquid nitrogen. The complexes can be characterized as high-spin distorted octahedral FeIII bridged by carboxylic acids. The dicarboxylic or tricarboxylic acids play a role as bridges for weak antiferromagnetic intramolecular exchange. The antiferromagnetic coupling parameters J vary in the -1.99 to -5.47cm-1 range for the dimers, whilst the values are -2.35 and -1.42cm-1 for the salen and saloph trimers, respectively. One complex, namely [{Fe(saloph)}2(2,5-dicarpy)]middot H2O, obeys the Curie-Weiss law.
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P. Pfeiffer, W. Christeleit, T. Hesse, H. Pfitzinger and H. Thielert, J. Prakt. Chem., 150, 261 (1938).
F. M. Ashmawy and A. R. Ujaimi, Inorg. Chim. Acta, 187, 155 (1991).
P. Coggon, A. T. McPail, P. M. Gross, F. E. Mabbs and V. N. McLachlan, J. Chem. Soc. (A), 2850 (1969).
J. R. Dorfman, J. J. Girerd, E. D. Simhon, T. D. P. Stack and R. H. Holm, Inorg. Chem., 23, 4407 (1984).
M. Gerloch, E. D. McKenzie and A. D. C. Towl, J. Chem. Soc. (A), 2850 (1969).
A. Elmali, O. Atakol, I. Svoboda and H. Fuess, Z. Kristallogr., 203, 273 (1993).
J. Kameníček, Z. Trávníček, Z. Šindelář and J. Walla, Pol. J. Chem., 70, 854 (1996).
J. Marek, Z. Smékal and Z. Trávniček, Acta Univ. Palacki Olomuc., Fac. Rerum Nat., 35, 33 (1996).
J. R. Dorfman, J. J. Girerd, E. D. Simhon, T. D. P. Stack and R. H. Holm, Inorg. Chem., 23, 4407 (1984).
S. L. Kessel and D. N. Hendrickson, Inorg. Chem., 17, 2630 (1978).
R. G. Wollmann and D. N. Hendrickson, Inorg. Chem., 17, 926 (1978).
Z. šindelář, PhD. Dissertation, Palacký University, Olomouc, 1987.
M. Dušek, V. Petříček, J. Kameníček and Z. Šindelář, Acta Crystallogr., Sect. C 48, 1579 (1992).
Z. Smékal, F. Březina, Z. Šindelář and R. Klička, Transition Met. Chem., 21, 49 (1996).
R. Klička and Z. Šindelář, Chem. Listy, 87, 89 (1993).
C. J. Pouchert, The Aldrich Library of Infrared Spectra, 3rd Edit., Aldrich Chemical Company, Milwaukee, WI, 1981.
D. J. Darensbourg, M. W. Holtcamp and J. H. Reibenspies, Polyhedron, 15, 2341 (1996).
K. S. Murray, Coord. Chem. Rev., 12, 1 (1974).
O. Kahn, Molecular Magnetism, VCH, New York, 1993.
J. Shi, P. Cheng, M. Miao, Y. Liu, D. Liao, Z. Jiang and G. Wang, Transition Met. Chem., 21, 512 (1996).
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Kopel, P., Sindelar, Z. & Klicka, R. Complexes of iron(III) salen and saloph Schiff bases with bridging dicarboxylic and tricarboxylic acids. Transition Metal Chemistry 23, 139–142 (1998). https://doi.org/10.1023/A:1006990925318
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DOI: https://doi.org/10.1023/A:1006990925318