Synthesis, structure and magnetic properties of an iron(II) complex with nitronyl nitroxides

被引：18

作者：

Nihei, Masayuki ^{[1
]}

Maeshima, Tadashi ^{[1
]}

Kose, Yuka ^{[1
]}

Oshio, Hiroki ^{[1
]}

机构：

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

来源：

POLYHEDRON | 2007年 / 26卷 / 9-11期

关键词：

tridentate nitrogen ligand; nitronyl nitroxide; molecular magnetism; iron; spin-crossover;

D O I：

10.1016/j.poly.2006.09.052

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

An iron(II) complex with nitronyl nitroxides, [Fe-II(dppNN)(2)](BF4)(2) center dot CH3COCH3 (1) (dppNN = 2,6-di(pyrazol-1-yl)-4-(4,4,5,5-tetra-methyl-1-oxido-3-yl)-4-(4,5-dihydro-3H-imidazol-2 '-yl)pyridine) was synthesized. In 1 the central iron(II) ion was coordinated by two tridentate ligands with nitronyl nitroxides. Magnetic susceptibility measurements showed that chi T-m values below 130 K was almost temperature independent, while upon increasing temperature chi T-m values showed gradual increase, suggesting an occurrence of a spin transition from low to high spin state. Green light irradiation on powder sample at 5 K resulted in spin conversion (LIESST). (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1993 / 1996

页数：4

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