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

Abstract

The bifunctional salt [Co(terpy) 2](TCNQ) 3·CH 3CN (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 ~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 π-stacking interactions of partially charged TCNQ radicals. Finally, 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.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1]
  1. Texas A&M Univ., College Station, TX (United States). Dept. of Chemistry
  2. Shanghai Univ., Shanghai (China). Dept. of Chemistry, Innovative Drug Research Center
Publication Date:
Research Org.:
Texas A&M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1467560
Grant/Contract Number:  
SC0012582
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Chemical Science
Additional Journal Information:
Journal Volume: 7; Journal Issue: 2; Journal ID: ISSN 2041-6520
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Zhang, Xuan, Wang, Zhao-Xi, Xie, Haomiao, Li, Ming-Xing, Woods, Toby J., and Dunbar, Kim R. A cobalt(II) spin-crossover compound with partially charged TCNQ radicals and an anomalous conducting behavior. United States: N. p., 2015. Web. doi:10.1039/c5sc03547c.
Zhang, Xuan, Wang, Zhao-Xi, Xie, Haomiao, Li, Ming-Xing, Woods, Toby J., & Dunbar, Kim R. A cobalt(II) spin-crossover compound with partially charged TCNQ radicals and an anomalous conducting behavior. United States. doi:10.1039/c5sc03547c.
Zhang, Xuan, Wang, Zhao-Xi, Xie, Haomiao, Li, Ming-Xing, Woods, Toby J., and Dunbar, Kim R. Tue . "A cobalt(II) spin-crossover compound with partially charged TCNQ radicals and an anomalous conducting behavior". United States. doi:10.1039/c5sc03547c. https://www.osti.gov/servlets/purl/1467560.
@article{osti_1467560,
title = {A cobalt(II) spin-crossover compound with partially charged TCNQ radicals and an anomalous conducting behavior},
author = {Zhang, Xuan and Wang, Zhao-Xi and Xie, Haomiao and Li, Ming-Xing and Woods, Toby J. and Dunbar, Kim R.},
abstractNote = {The bifunctional salt [Co(terpy)2](TCNQ)3·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 ~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 π-stacking interactions of partially charged TCNQ radicals. Finally, 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.},
doi = {10.1039/c5sc03547c},
journal = {Chemical Science},
number = 2,
volume = 7,
place = {United States},
year = {Tue Dec 08 00:00:00 EST 2015},
month = {Tue Dec 08 00:00:00 EST 2015}
}

Journal Article:
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Cited by: 11 works
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Works referenced in this record:

Organic-Inorganic Hybrid Materials as Semiconducting Channels in Thin-Film Field-Effect Transistors
journal, October 1999


Tunable Electrical Conductivity in Metal-Organic Framework Thin-Film Devices
journal, December 2013

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