Synthesis, crystal structure and magnetic properties of a novel tetranuclear oxo-bridged iron(III) butterfly

被引：4

作者：

Arizaga, Livia ^{[1
]}

Gancheff, Jorge S. ^{[1
]}

Faccio, Ricardo ^{[2
]}

Canon-Mancisidor, Walter ^{[3
,4
]}

Gonzalez, Ricardo ^{[1
]}

Kremer, Carlos ^{[1
]}

Chiozzone, Raul ^{[1
]}

机构：

[1] Univ Republica, Fac Quim, Dept Estrella Campos, Catedra Quim Inorgan, Montevideo, Uruguay

[2] Univ Republica, Fac Quim, DETEMA, Lab Cristalog, Montevideo, Uruguay

[3] Univ Santiago Chile, Fac Quim & Biol, USACH, Santiago, Chile

[4] CEDENNA, Ctr Dev Nanosci & Nanotechnol, Santiago, Chile

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2014年 / 1058卷

关键词：

Iron(III) complexes; Polynuclear complexes; Crystal structures; Magnetic properties; EXCHANGE COUPLING-CONSTANTS; SPIN FRUSTRATION; CORE TOPOLOGY; CLUSTERS; COMPLEXES; LIGANDS; FE-4; ME;

D O I：

10.1016/j.molstruc.2013.10.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel carboxylate/picolinate oxo-bridged iron(III) cluster, namely [Na-2(H2O)(8)][Fe-4(mu-O)(2)(O2CPh)(7) (Pic)(2)](2)center dot 2H(2)O (1) where pic = picolinate, has been obtained by reacting "basic iron benzoate" [Fe3O (O2CPh)(6)(H2O)(3)](O2CPh) with sodium picolinate in acetonitrile. The compound has been characterized by elemental analysis and IR spectroscopy and its crystal structure has been determined by single-crystal X-ray diffraction. Variable-temperature magnetic susceptibility measurements in polycrystalline samples reveal moderate antiferromagnetic couplings leading to an S = 0 ground state. Theoretically computed values of the exchange constants in the title compound were also obtained with DFT calculations and were in agreement with the overall conclusions of the analysis of the experimental data. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：149 / 154

页数：6

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