Magneto-structural correlations in self-assembled spin-transition nano-architectures of the [][2×2]-grid-type

Autor: Jean-Marie Lehn, G Vaughan, Esther Breuning, Mario Ruben, P. Gütlich, Vadim Ksenofontov
Rok vydání: 2004
Předmět:
Zdroj: Journal of Magnetism and Magnetic Materials. :E715-E717
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2003.12.1423
Popis: The magnetism of a series of tetranuclear complexes of the [ Fe II 4 L 4 ]( BF 4 ) 8 [2×2] -grid-type was investigated, revealing the occurrence of spin-transition (ST) behavior within this class of compounds. The phenomenon depends directly on the nature of the substituent R1 of the ligand L . All FeII ions in compounds with R1 substituents favoring strong ligand fields ( R 1 = H ; OH ) remain completely in the diamagnetic low-spin state. Only the complex bearing R1=Ph exhibits thermally induced ST behavior.
Databáze: OpenAIRE