Intercalation of a nitronyl nitroxide radical into layered inorganic hosts. Preparation and physico-chemical characterization

被引：22

作者：

Caneschi, A

Gatteschi, D

Sangregorio, C

Vaz, MGF

Costantino, U

Nocchetti, M

Vivani, R

机构：

[1] Univ Florence, Dept Chem, I-50019 Sesto Fiorentino, FI, Italy

[2] Univ Perugia, Dept Chem, I-06123 Perugia, Italy

来源：

INORGANICA CHIMICA ACTA | 2002年 / 338卷

关键词：

nitronyl nitroxide radicals; magnetism; intercalation compounds;

D O I：

10.1016/S0020-1693(02)01026-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis of new intercalation compounds obtained introducing the organic radical 2-(4-carboxyphenyl)-4,4,5,5-tetramethyl-4,5 -dihydro-1H-imidazol-1-oxyl-3-oxide (NITpBAH) in layered inorganic hosts via topotactic anion exchange reactions or exchange of anionic ligands is presented. Three different inorganic hosts were employed, two LDH-phases (Mg-Al-CO3 and Zn-Al-Cl) and the butanoxy derivative of lambda-zirconium phosphates. In all cases the intercalation procedure was successfully accomplished. The percentage of exchanged anions obtained was 27, 45, 40% for Mg-Al-LDH, Zn-Al-LDH and kZrPO(4)[O(CH2)(3)CH3]DMSO, respectively. The magnetic properties of the intercalated compounds were measured with a SQUID magnetometer and compared to those of a polycrystalline powder of the pure radical. The intercalation process does not change the nature of magnetic intermolecular interactions which remain antiferromagnetic but reduces their magnitude. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：127 / 132

页数：6

共 22 条

[1] Layered zirconium phosphate chloride dimethyl sulfoxide as a two-dimensional exchanger of anionic ligands. Part 1. Substitution of chloride with inorganic monodentate ligands [J].