Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (19): 1795-1801. Previous Articles     Next Articles

Original Articles

(H2teta)2{[Ni(teta)][Fe(CN)6]2}•17H2O (teta=5,7,7,12,14,14-Hexa-methyl-1,4,8,11-tetraazacyclotetradecane)超分子化合物的合成、晶体结构和磁性质研究

袁爱华*,1,沈小平2,周虎1,陆路德3   

  1. (1江苏科技大学材料科学与工程学院 镇江 212003)
    (2江苏大学化学化工学院 镇江 212013)
    (3南京理工大学材料化学实验室 南京 210094)
  • 投稿日期:2005-02-18 修回日期:2005-06-08 发布日期:2010-12-10
  • 通讯作者: 袁爱华

Synthesis, Crystal Structure and Magnetic Property of a Supermolecule (H2teta)2{[Ni(teta)][Fe(CN)6]2}•17H2O (teta=5,7,7,12,14,14-Hexamethyl-1,4,8,11-tetraazacyclotetradecan

YUAN Ai-Hua*,1, SHEN Xiao-Ping2, ZHOU Hu1, LU Lu-De3   

  1. (1 School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003)
    (2 School of Chemistry and Chemical Engineering, Jiangsu Univer-sity, Zhenjiang 212013)
    (3 Material Chemistry Laboratory, Nanjing University of Science and Technology, Nanjing 210094)
  • Received:2005-02-18 Revised:2005-06-08 Published:2010-12-10
  • Contact: YUAN Ai-Hua

The title compound (H2teta)2{[Ni(teta)][Fe(CN)6]2}•17H2O was obtained by slow diffusion of an aqueous solution of K3[Fe(CN)6] and a DMF solu-tion of [Ni(teta)](ClO4)2 through a U-tube containing agar at room temperature. The compound crystallizes in the triclinic space group P1 with a=0.9998(2) nm, b=1.5514(3) nm, c=1.6647(4) nm, α=114.15(2)°, β=100.91(2)°, γ=93.42(2)°, V=2.2863(10) nm3, z=1, Dc=1.196 g•cm-3, F(000)=890, μ=5.84 cm-1, GOF=0.894, R1=0.0582, wR2=0.1446 [I>2σ(I)]. Its structure con-sists of two cations of [H2teta]2+, one trinuclear anion of {[Ni(teta)][Fe(CN)6]2}4- and seventeen water molecules, which are held together by the N—H…N hydrogen bonds to form a two-dimensional supramolecule. The variable temperature magnetic susceptibility, measured in the 1.8~300 K range, indicates the presence of a strong ferromagnetic interaction through the cyanide bridge in trinuclear system Fe (s=1/2)-Ni (s=1)-Fe (s=1/2) with magnetic parameters J=4.33 cm-1, g=2.6, θ=60 K. The thermal stability of the complex was studied by TG-DTG.

Key words: [Ni(teta)]2+, cyano-bridged, supramolecule, crystal structure, magnetic property