A Cu II Chain Compound Showing a Ferromagnetic Coupling through Triple N 1 , N 2 ‐1,2,4‐Triazole Bridges
| Autor: | Yann Garcia, Petra J. van Koningsbruggen, G. Bravic, Olivier Kahn, Daniel Chasseau |
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| Rok vydání: | 2003 |
| Předmět: |
010405 organic chemistry
Chemistry Stereochemistry 1 2 4-Triazole chemistry.chemical_element Triclinic crystal system 010402 general chemistry 01 natural sciences Copper 3. Good health 0104 chemical sciences Ion Inorganic Chemistry Crystallography chemistry.chemical_compound Ferromagnetism Chain (algebraic topology) Hydrate Trifluoromethanesulfonate |
| Zdroj: | European Journal of Inorganic Chemistry. 2003:356-362 |
| ISSN: | 1099-0682 1434-1948 |
| DOI: | 10.1002/ejic.200390048 |
| Popis: | [Cu(hyetrz)3](CF3SO3)2·H2O [hyetrz = 4-(2′-hydroxyethyl)-1,2,4-triazole] represents the first structurally characterised ferromagnetically coupled CuII chain compound containing triple N1,N2-1,2,4-triazole bridges. catena-[μ-Tris{4-(2′-hydroxyethyl)-1,2,4-triazole-N1,N2}copper(II)] bis(trifluoromethanesulfonate) hydrate (C14H23F6S2O10CuN9) crystallises in the triclinic space group Pl, a = 13.54(3), b = 14.37(3), c = 15.61(4) A, α = 95.9(1), β = 104.9(1), γ = 106.5(1)°, V = 2763(11) A3, Z = 4 (CuII units). The CuII ions are linked by triple N1,N2-1,2,4-triazole bridges yielding an alternating chain with Cu1−Cu2 = 3.8842(4) A and Cu2−Cu3 = 3.9354(4) A. Analysis of the magnetic data according to a high-temperature series expansion gives a J value of +1.45(3) cm−1. The nature and the magnitude of the ferromagnetic exchange have been discussed on the basis of the structural features. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003). |
| Databáze: | OpenAIRE |
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