Synthesis, structure, and magnetism of a ferric 24-azametallacrown-8 complex

被引：79
作者：
Lin, S
Liu, SX [1 ]
Chen, Z
Lin, BZ
Gao, S
机构：
[1] Fuzhou Univ, Dept Chem, Fuzhou 350002, Peoples R China
[2] Peking Univ, Dept Chem, Beijing 100871, Peoples R China
[3] Huaqiao Univ, Inst Mat Phys Chem, Quanzhou 362011, Peoples R China
[4] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China
[5] Fujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
来源：
INORGANIC CHEMISTRY | 2004年 / 43卷 / 07期
关键词：
D O I：
10.1021/ic035145w
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new pentadentate N-isobutyrylsalicylhydrazidate ligand (H(3)ibushz, C11H14N2O3) and a self-assembly synthesis of the first 24-azametallacrown-8, [Fe-8(C11H11N2O3)(8)(CH3OH)(8)].0.5CH(2)Cl(2).7.5CH(3)OH.3.5H(2)O, have been reported. Eight Fe(III) ions and eight deprotonated ibushz(3-) ligands construct a planar 24-membered ring based on the M-N-N-M linkage. The chiralities of the iron atoms on the 24-azametallacrown-8 ring alternate between the A and A forms. The title octanuclear azametallacrown has no crystallographic centrosymmetry, while all the known metallacrowns and azametallacrowns with an even nuclear number have crystallographic centrosymmetry. The study of H-1 NMR spectra suggests that the title compound retains its metallacrown structure in solution at room temperature over a period of at least three months. There exists a strong antiferromagnetic exchange interaction between the iron paramagnetic centers.
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页码：2222 / 2224
页数：3
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