A cobalt(II) spin-crossover compound with partially charged TCNQ radicals and an anomalous conducting behavior

被引：66
|
作者：
Zhang, Xuan [1 ]
Wang, Zhao-Xi [2 ]
Xie, Haomiao [1 ]
Li, Ming-Xing [2 ]
Woods, Toby J. [1 ]
Dunbar, Kim R. [1 ]
机构：
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
[2] Shanghai Univ, Dept Chem, Innovat Drug Res Ctr, Shanghai 200444, Peoples R China
来源：
CHEMICAL SCIENCE | 2016年 / 7卷 / 02期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
ELECTRICAL-CONDUCTIVITY; SUPRAMOLECULAR INTERACTIONS; HYBRID MATERIALS; COMPLEXES; SALTS; 7,7,8,8-TETRACYANOQUINODIMETHANE; SEMICONDUCTOR; BISTABILITY; DERIVATIVES; TERPYRIDINE;
D O I：
10.1039/c5sc03547c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The bifunctional salt [Co(terpy)(2)](TCNQ)(3)center dot CH3CN (terpy = 2,2'; 6',2"-terpyridine, TCNQ = 7,7,8,8-tetracyanoquino-dimethane) exhibits a high room temperature conductivity of 0.13 S cm(-1) and an anomaly in conductivity at similar to 190 K as evidenced by variable temperature structural, magnetic and conductivity studies. The anomaly in the conductivity at 190 K has been correlated with the temperature dependent structural breathing and Jahn-Teller distortion of the low spin state of the SCO units, as well as the charge fluctuations and supramolecular pi-stacking interactions of partially charged TCNQ radicals. The modular synthetic approach leads to an accessible source of partially charged TCNQ radicals for the facile preparation of bifunctional molecular materials with high electrical conductivity.
引用
收藏
页码：1569 / 1574
页数：6
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