A linear Cu-II-Gd-III-Cu-II-Gd-III complex derived from the assembly reaction of [(NaCuH3Ldpen(meso))-H-II] and [Gd-III(thd)(3)(H2O)(2)] (H3L = meso-1,2-diphenyl-1-(2-oxybenzamido)-2-(2-oxy-3-ethoxybenzylideneamino)e thane and Hthd=2, 2,6,6-tetra-methyl-3,5-heptanedione)

作者：Shimogori Youhei; Hamamatsu Takefumi; Fujinami Takeshi; Hagiwara Hiroaki; Matsumoto Naohide^*; Re Nazzareno; Mrozinski Jerzy; Ishikawa Yuichi; Igashira Kamiyama Asako; Konno Takumi

来源：Polyhedron, 2011, 30(6): 1127-1133.

DOI：10.1016/j.poly.2011.01.008

• d-f Complex
• Chiral aggregation
• Ligand-complex
• Assembly reaction
• Magnetism

A linear tetranuclear Cu-II-Gd-III-Cu-II-Gd-III complex [(CuLGdIII)-L-II-Gd-dpen(meso)(thd)(2)(H2O)](2) was synthesized from the reaction of [(NaCuLdpen(meso))-L-II(DMF)] with [Gd-III(thd)(3)(H2O)(2)], and the structures and magnetic properties were investigated, where H3LdPen(meso) = meso-1,2-diphenyl-1-(2-hydroxybenzamido)-2-(2-hydroxy-3-ethoxybenzylideneamino)ethane and Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione. The Cu-II complex component [(NaCuLdpen(meso))-L-II(DMF)] has a one-dimensional (1D) chain structure, in which the Na+ ion is coordinated by two phenoxo and an ethoxy oxygen atoms of a Cu-II complex and an amido oxygen atom of the adjacent Cu-II unit to produce the 1D structure, in which the diphenylethylenediamine moieties have the array of {(1R,2S)-Na-(1S,2R)}(1 infinity). The assembly reaction of the Cu-II and Gd-III components gave a linear complex with the array of Cu(1)-Gd(1)-Cu(2)-Gd(2), in which two diphenylethylenediamine moieties have the same chirality of (1R,2S)-(1R,2S) or (1S,2R)-(1S,2R). Two linear Cu(1)-Gd(1)-Cu(2)-Gd(2) units are linked by hydrogen bonds through two water molecules to give a cyclic structure with a center of symmetry. The temperature dependence of the magnetic susceptibilities and field-dependent magnetization revealed the ferromagnetic interaction between the Cu-II and Gd-III ions within the linear chain.

• 出版日期2011-4-13