Simultaneous Spin‐Crossover Transition and Conductivity Switching in a Dinuclear Iron(II) Coordination Compound Based on 7,7′,8,8′‐Tetracyano‐p‐quinodimethane

• Published in: Chemistry : a European journal Vol. 26; no. 6; pp. 1278 - 1285
• Main Authors: Ishikawa, Ryuta, Ueno, Shuya, Nifuku, Shoei, Horii, Yoji, Iguchi, Hiroaki, Miyazaki, Yuji, Nakano, Motohiro, Hayami, Shinya, Kumagai, Shohei, Katoh, Keiichi, Li, Zhao‐Yang, Yamashita, Masahiro, Kawata, Satoshi
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 27.01.2020
• Subjects: Bistability; Chemistry; conducting materials; Coordination compounds; Crossovers; Electrical conductivity; Electrical resistivity; Iron; Magnetic permeability; Magnetic susceptibility; Magnetism; Magnetoresistance; Magnetoresistivity; Pyrazole; semiconductors; spin crossover; Spin transition; Switching; TCNQ; Temperature dependence; Transition temperatures; conducting materials; iron; spin crossover; TCNQ; semiconductors

The reaction of Fe(OAc)2 and Hbpypz with neutral TCNQ results in the formation of [Fe2(bpypz)2(TCNQ)2](TCNQ)2 (1), in which Hbpypz=3,5‐bis(2‐pyridyl)pyrazole and TCNQ=7,7′,8,8′‐tetracyano‐p‐quinodimethane. Crystal packing of 1 with uncoordinated TCNQ and π–π stacking of bpypz− ligands produces an ex...