- 作者: 林信宏, 魏和祥
- 作者服務機構: Department of Chemistry, Tamkang University, Ying-Chung Road, Tamsui 25137, Taiwan, R.O.C.
- 中文摘要: 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 6.62 cm-1 for 2, respectively.
- 英文摘要: --
- 中文關鍵字: Nitronyl nitroxides; Imino nitroxides; Silver complexes; Crystal structure; Magnetic properties.
- 英文關鍵字: --