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Please use this identifier to cite or link to this item:
https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/50369
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Title: | Synthesis, structure and magnetic properties of 1-D silver (I) complexes with benzoic acids bearing ortho-imino nitroxide and para-nitronyl nitroxide radical ligands |
Authors: | Lin, Hsin-huang;Wei, Ho-hsiang |
Contributors: | 淡江大學化學學系 |
Keywords: | Nitronyl nitroxides;Imino nitroxides;Silver complexes;Crystal structure;Magnetic properties |
Date: | 2008-02-01 |
Issue Date: | 2010-08-09 16:22:34 (UTC+8) |
Publisher: | 臺北市:中國化學學會 |
Abstract: | Two new 1-D silver (Ⅰ) complexes, [Ag(Ⅰ)1.5(IM-oBA)(NO3)0.5] (1) and [Ag(Ⅰ)(NIT-pBA)] (2), (IM-oBAH=2-(2-carboxyphenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-yloxyl,NIT-pBAH=2-(4-carboxyphenyl)-4,4,5,5-tetramethyl-4,5-dihydro-3-oxido-H-imidazol-3-ium-1-yloxyl) have been prepared and structurally characterized. Complexes 1 and 2 crystallized in the monoclinic space groups of C2/c and P21/c, respectively. In complex 1, the structure consists of trinuclear Ag(Ⅰ) atoms with different linkages of IM-oBA and nitrates. The trinuclear Ag(Ⅰ) atoms are further coordinated to the neighbor IM-oBA radicals via self-assembly of the nitrogen atom of imine moiety and extended into formation of a polymeric chain. Complex 2 is constructed from a bis (carboxylato-O,O')-bridged centrosymmetric dimeric subunit and extended into a polymeric chain through self-assembly coordination between metal ions and nitroxide groups of NIT-pBA radicals. Temperature dependence of magnetic susceptibility measurements showed a weak ferromagnetic coupling between nitroxide radicals in 1 and 2 with J=5.62 for 1 and 6.62cm^(-1) for 2, respectively. |
Relation: | Journal of the Chinese Chemical Society=中國化學會會誌 55(1), pp.45-52 |
DOI: | 10.1002/jccs.200800009 |
Appears in Collections: | [化學學系暨研究所] 期刊論文
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