A two-dimensional radicat salt based upon BEDT-TTF and the dimeric, magnetic anion [Fe(tdas)_2]_2~(2-): (BEDT-TTF)_2[Fe(tdas)_2] (tdas = 1,2,5-thiadiazole-3,4-dithiolate)

Paola Deplano; Laura Leoni; Maria Laura Mercuri; John A.Schuleter; Urs Geiser; Hau H.Wang; Aravinda M.Kini; Jamie L. Manson; Carlos J.Gomez-Garcia; Eugenio Coronado; Eugenio Coronado; M.-H.Whangbo

首页> 外文期刊>Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology >A two-dimensional radicat salt based upon BEDT-TTF and the dimeric, magnetic anion [Fe(tdas)_2]_2~(2-): (BEDT-TTF)_2[Fe(tdas)_2] (tdas = 1,2,5-thiadiazole-3,4-dithiolate)

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A two-dimensional radicat salt based upon BEDT-TTF and the dimeric, magnetic anion [Fe(tdas)_2]_2~(2-): (BEDT-TTF)_2[Fe(tdas)_2] (tdas = 1,2,5-thiadiazole-3,4-dithiolate)

机译：基于BEDT-TTF和二聚磁性阴离子[Fe（tdas）_2] _2〜（2-）：（BEDT-TTF）_2 [Fe（tdas）_2]的二维radicat盐（tdas = 1,2 ，5-thiadiazole-3,4-dithiolate）

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In an attempt to synthesize new synthetic metals which couple magnetic properties to conductivity, we prepared the novel salt (BEDT-TTF)_2[Fe(tdas)_2](BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene, hereafter referred to as ET; tdas = 1,2,5-thiadiazole-3,4-dithiolate] by the electrocrystallization technique. The crystal structure of this compound, as determined by single crystal X-ray diffraction, contains conducting, organic ET layers separated by dimerized, magnetic [Fe(tdas)_2]_2~(2-) anions. Due to the magnetic insulating ground electronic state of the ET layer,thermally activated conductivity is observed, with a room temperatuare value of about 1 S cm~(-1). This salt was also characterized by EPR spectroscopy, dc magnetization measurements and Raman spectroscopy. The electronic structure of the ET layers was investigated by extended Huckel tight-binding calculations, and the spin exchange interactions of the ET and [Fe(tdas)_2]~- layers were examined by spin-dimer analysis.

机译：为了合成将磁性与电导率耦合的新型合成金属，我们制备了新型盐（BEDT-TTF）_2 [Fe（tdas）_2]（BEDT-TTF =双（亚乙基二硫代）四硫富瓦烯，以下称为ET; tdas = 1,2,5-thiadiazole-3,4-dithiolate [1,2,5-thiadiazole-3,4-dithiolate]，通过单晶X射线衍射确定，该化合物的晶体结构包含导电有机ET层，该层由二聚磁性[ Fe（tdas）_2] _2〜（2-）阴离子，由于ET层的磁绝缘基态电子状态，观察到热活化的电导率，室温值约为1 S cm〜（-1）。还通过EPR，直流磁化和拉曼光谱对盐进行了表征，通过扩展的Huckel紧密结合计算研究了ET层的电子结构，以及ET和[Fe（tdas）_2]〜-的自旋交换相互作用。通过旋转二聚体分析检查各层。

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《Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology》 |2002年第12期|共8页
作者
Paola Deplano; Laura Leoni; Maria Laura Mercuri; John A.Schuleter; Urs Geiser; Hau H.Wang; Aravinda M.Kini; Jamie L. Manson; Carlos J.Gomez-Garcia; Eugenio Coronado; Eugenio Coronado; M.-H.Whangbo;
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A two-dimensional radicat salt based upon BEDT-TTF and the dimeric, magnetic anion [Fe(tdas)_2]_2~(2-): (BEDT-TTF)_2[Fe(tdas)_2] (tdas = 1,2,5-thiadiazole-3,4-dithiolate)

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