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DOI: 10.1039/A805470C (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 4161-4164

Magnetic characteristics of two two-dimensional bimetallic assemblies, [Ni(diamine)2]2[Fe(CN)6]NO3·nH2O (diamine = 1,3-diaminopropane, n = 2; ethylenediamine, n = 3), with a square molecular structure

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Hui-Zhong Kou, Wei-Ming Bu, Dai-Zheng Liao, Zong-Hui Jiang, Shi-Ping Yan, Yu-Guo Fan and Geng-Lin Wang

Abstract

Two bimetallic assemblies, [Ni(diamine)2]2[Fe(CN)6]NO3·nH2O [diamine = 1,3-diaminopropane (tn), n = 2 (1); ethylenediamine (en), n = 3 (2)], were prepared and their magnetic properties studied. The structure of 1 consists of a two-dimensional sheet of polycations containing Ni–N[triple bond, length half m-dash]C–Fe linkages and NO3– anions. In the crystal the four CN– ligands of Fe(CN)63– co-ordinate to the trans-[Ni(tn)2]2+ cations in a bent fashion which is significantly different from similar 2-D sheet-like Ni2Fe complexes. The complexes both exhibit intramolecular ferromagnetic interaction and the magnetic data have been analysed giving the intramolecular Fe–Ni exchange integral of 0.88 cm–1 for 1 and 0.92 cm–1 for 2, respectively.

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