STUDY OF THE 1A1⇔5T2 SPIN TRANSITION IN MIX-LIGAND COMPLEXES OF IRON(II) HEXAFLUOROSILICATE WITH 1,2,4-TRIAZOLE AND 4-AMINO-1,2,4-TRIAZOLE
O. G. Shakirova, M. Grunert, D. Y. Naumov, F. G??tlich, L. G. Lavrenova
Keywords: complexes, iron(II), static magnetic susceptibility, spin transition, 1,2,4-triazoles
Pages: 51-57
Abstract
Synthesis procedures for mix-ligand complexes with a composition of Fe(Htrz)3(1-x)(NH2trz)3xSiF6·mH2O, 0 ≤ x ≤ 1, m = 1, 2 are developed. Solid phases are isolated from water-ethanol solutions and studied by X-ray phase analysis, the method of static magnetic susceptibility (temperature range of 100 K to 400 K), IR and Mössbauer spectroscopy (at 200 K and 298 K). The temperatures of direct and inverse transitions are shown to depend on the complex composition.
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