Structure and spectral properties of TCNQ salts with Zn(II) and Ni(II) 2,2′-bipyridine complexes

Magnetic Specific Heat of Anion-Radical Salt [Ni(bipy)3](TCNQ)4·(CH3)2CO at Very Low Temperatures

“…Layers of anionradical stacks alternate with cation sequences along crystallographic c-axis. The synthesis procedure of the compound and detailed crystal structure, including IR absorption and the Raman spectra studies, were reported previously [7]. [7].…”

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Thermodynamic studies of the anion-radical salt system [Ni(bipy)3](TCNQ)4·(CH3) 2CO, where TCNQ is 7,7 ,8, are reported. The anion-radical salt systems based on TCNQ belong to a material class in which the arrangement of the anion-radical salt has considerable impact on the charge transfer and magnetic properties.

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Disorder of the dimeric TCNQ–TCNQ unit in the crystal structure of [Ni(bpy)3]2(TCNQ–TCNQ)(TCNQ)2·6H2O (TCNQ is 7,7,8,8-tetracyanoquinodimethane)

“…[Ni(terpy) 2 ](TCNQ) 2 (terpy is 2,2 0 :6 0 ,2 00 -terpyridine) with noncoordinating -dimerized anion radicals (Alonso et al, 2005) ISSN or [Ni(cyclam)(TCNQ) 2 ] (cyclam is 1,4,8,11-tetraazacyclotetradecane) with -coordinating anion radicals (Ballester et al, 1997). From a similar system with bpy, the formation of [Ni(bpy) 3 ](TCNQ) 4 Á(CH 3 ) 2 CO was reported, along with the results of its crystal structure analysis (Vasylets et al, 2014). Following our synthetic procedure, we have isolated single crystals of novel composition, i.e.…”