Issue 36, 2015

Structural distortions of the spin-crossover material [Co(pyterpy)2](TCNQ)2 mediated by supramolecular interactions

Abstract

The incorporation of TCNQ˙ (7,7,8,8-tetracyanoquinodimethane) radicals as counterions for the spin-crossover material [Co(pyterpy)2](TCNQ)2·solvent (pyterpy = 4′-(4′′′-pyridyl)-2,2′:6′,2′′-terpyridine) leads to structural distortions of the [Co(pyterpy)2]2+ spin-crossover cation as compared to [Co(pyterpy)2](PF6)2. Variable temperature structural and magnetic studies indicate that the supramolecular π-stacking interactions between the terminal pyridyl groups and TCNQ radicals play a crucial role in the spin-crossover properties.

Graphical abstract: Structural distortions of the spin-crossover material [Co(pyterpy)2](TCNQ)2 mediated by supramolecular interactions

Supplementary files

Article information

Article type
Paper
Submitted
22 Jun. 2015
Accepted
02 Aug. 2015
First published
13 Aug. 2015

J. Mater. Chem. C, 2015,3, 9292-9298

Structural distortions of the spin-crossover material [Co(pyterpy)2](TCNQ)2 mediated by supramolecular interactions

X. Zhang, H. Xie, M. Ballesteros-Rivas, Z. Wang and K. R. Dunbar, J. Mater. Chem. C, 2015, 3, 9292 DOI: 10.1039/C5TC01851J

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