The Conducting Spin-Crossover Compound Combining Fe(II) Cation Complex with TCNQ in a Fractional Reduction State

被引：40
|
作者：
Shvachko, Yuri N. [1 ]
Starichenko, Denis V. [1 ]
Korolyov, Aleksander V. [1 ]
Yagubskii, Eduard B. [2 ]
Kotov, Alexander I. [2 ]
Buravov, Lev I. [2 ]
Lyssenko, Konstantin A. [3 ]
Zverev, Vladimir N. [4 ,5 ]
Simonov, Sergey V. [4 ]
Zorina, Leokadiya V. [4 ]
Shakirova, Olga G. [6 ]
Lavrenova, Lyudmila G. [7 ]
机构：
[1] Russian Acad Sci, MN Miheev Inst Met Phys, Ural Branch, S Kovalevskaya St 18, Ekaterinburg 620137, Russia
[2] Russian Acad Sci, Inst Problems Chem Phys, Semenov Ave 1, Chernogolovka 142432, Moscow, Russia
[3] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, Vavilov St 28, Moscow 119991, Russia
[4] Russian Acad Sci, Inst Solid State Phys, Ossipyan St 2, Chernogolovka 142432, Moscow District, Russia
[5] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow District, Russia
[6] Komsomolsk On Amur State Tech Univ, Lenin Ave 27, Komsomolsk On Amur 681013, Russia
[7] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Lavrentyev Ave 3, Novosibirsk 630090, Russia
来源：
INORGANIC CHEMISTRY | 2016年 / 55卷 / 17期
基金：
俄罗斯基础研究基金会;
关键词：
ELECTRICAL-CONDUCTIVITY; CHARGE-TRANSFER; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; DERIVATIVES; TRANSITION; NICKEL; SERIES; COPPER; BETS;
D O I：
10.1021/acs.inorgchem.6b01829
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The radical anion salt [Fe{HC(pz)(3)}(2)]-(TCNQ)(3) demonstrates conductivity and spin-crossover (SCO) transition associated with Fe(II) complex cation subsystem. It was synthesized and structurally characterized at temperatures 100, 300, 400, and 450 K. The compound demonstrates unusual for 7,7,8,8,-tetracyanoquinodimethane (TCNQ)-based salts quasi-two-dimensional conductivity. Pronounced changes of the in-plane direct-current resistivity and intensity of the electron paramagnetic resonance (EPR) signal, originated from TCNQ subsystem, precede the SCO transition at the midpoint T* = 445 K. The boltzmannian growth of the total magnetic response and structural changes in the vicinity of T* uniquely show that half [Fe{HC(pz)(3)}(2)] cations exist in high-spin state. Robust broadening of the EPR signal triggered by the SCO transition is interpreted in terms of cross relaxation between the TCNQ and Fe(II) spin subsystems.
引用
收藏
页码：9121 / 9130
页数：10
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