A Novel Chromium 18-Azametallacrown-6 Complex with Antiferromagnetic Interactions

被引：3

作者：

Chen, Gong-Jun ^{[1
]}

Gao, Chun-Yan ^{[1
]}

Gu, Wen ^{[1
]}

Liu, Xin ^{[1
]}

Yan, Shi-Ping ^{[1
]}

Tian, Jin-Lei ^{[1
]}

Liao, Dai-Zheng ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2011年 / 637卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

Chromium; Crown compounds; X-ray diffraction; Magnetic properties; Aggregation; MAGNETIC-PROPERTIES; OCTANUCLEAR; NUCLEARITY; SIZE;

D O I：

10.1002/zaac.201000305

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new nanometer-sized hexanuclear chromium azametallacrown complex, [Cr-6(ashz)(6)(H2O)(6)]center dot 11H(2)O (1), was isolated from the reaction of Cr(ClO4)(3)center dot 6H(2)O and N-acetylsalicylhydrazide (H(3)ashz). Six triply-deprotonated ligands (ashz(3-)) link six chromium ions by hydrazide N-N groups, thus generating a hexanuclear chromium aggregate with a 18-membered ring system. The binding mode of the ligand enforces that the six ring metal ions are not located in a plane, but with a chair conformation. Interestingly, the resulting chiralities of the hexacoordinate chromium atoms alternate between Lambda and Delta forms. Magnetic susceptibility data of the complex indicate intramolecular antiferromagnetic coupling of the Cr-III atoms.

引用

页码：374 / 376

页数：3

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