Motional Narrowing of Electron Spin Resonance Absorption in the Plastic-Crystal Phase of [(CH3)4N]FeCl4

被引：17

作者：

Salgado-Beceiro, Jorge ^{[1
,2
]}

Castro-Garcia, Socorro ^{[1
,2
]}

Sanchez-Andujar, Manuel ^{[1
,2
]}

Rivadulle, Francisco ^{[3
]}

机构：

[1] Univ A Coruna, QuiMolMat Grp, Dept Chem, Fac Sci, Campus A Coruna, Coruna 15071, Spain

[2] Univ A Coruna, CICA, Campus A Coruna, Coruna 15071, Spain

[3] Univ Santiago Compostela, Ctr Singular Invest Quim Biol & Mat Mol CiQUS, Dept Quim Fis, Santiago De Compostela 17582, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2018年 / 122卷 / 48期

关键词：

TRANSITIONS;

D O I：

10.1021/acs.jpcc.8b09367

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：

We report the temperature dependence of the electron spin resonance (ESR) absorption and magnetic susceptibility of plastic crystal [(CH3)(4)N]FeCl4. We demonstrate the extreme sensitivity of ESR to the static and dynamic structural transitions, characteristic of this material. We observed the narrowing of the ESR line in the high temperature plastic-crystal phase, which is due to fast rotation (tau approximate to 10(-9) s) of the [FeCl4](-) anion. This is a rare example of the effect of fast motional narrowing in crystalline solids, in which ions occupy fixed positions in the crystal lattice.

引用

页码：27769 / 27774

页数：6

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