Ferromagnetic coupling in a novel dicyanamide-bridged dinuclear gadolinium(III) complex [Gd2(dca)4(OH)2 (NITpPy)4] (NITpPy = 4-pyridyl-nitronyl nitroxide radical) |
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| Authors: | Chin-Feng Hsu Shin-Huang Lin Ho-Hsiang Wei |
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| Affiliation: | aDepartment of Chemistry, Tamkang University, Tamsui 25137, Taiwan |
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| Abstract: | The novel six-coordinated gadolinium(III) complex of formula [Gd2(dca)4(OH)2(NITpPy)4] (1) (dca = dicyanamide, NITpPy = 4-pyridyl-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-oxy-3-oxide) has been prepared and characterized by X-ray crystallography. Compound 1 is a dimer structure made up of double μ1,5-dca-bridged gadolinium(III) ions and one terminal dca ligand; variable-temperature magnetic susceptibility measurements reveal the occurrence of a significant ferromagnetic interaction directly spin polarization through the NITpPy–Gd(III)–NITpPy pathway with J = 11.56 cm−1. |
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| Keywords: | Gadolinium(III) complex Dicyanamide Nitronyl nitroxide Crystal structure Magnetic properties |
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