Anomalous Pressure Effects on the Electrical Conductivity of the Spin Crossover Complex [Fe(pyrazine){Au(CN) 2 } 2 ]

Andrei-Cristian Gheorghe (1, 2) , Yurii S. Bibik (3, 4) , Olesia I. Kucheriv (3, 4) , Diana D. Barakhtii (3, 4) , Marin-Vlad Boicu (1, 2) , Ionela Rusu (1, 2) , Andrei Diaconu (1, 2) , Il’ya A Gural'Skiy (3, 4) , Gábor Molnár (5) , Aurelian Rotaru (1, 2)

1 USU - University Stefan cel Mare of Suceava
2 MANSiD Research Center [Suceava]
3 Department of Chemistry, Taras Shevchenko National University of Kyiv
4 UORSY - UkrOrgSyntez Ltd.
5 LCC - Laboratoire de chimie de coordination

We studied the spin-state dependence of the electrical conductivity of two nanocrystalline powder samples of the spin crossover complex [Fe(pyrazine){Au(CN) 2 } 2 ]. By applying an external pressure (up to 3 kbar), we were able to tune the charge transport properties of the material from a more conductive low spin state to a crossover point toward a more conductive high spin state. We rationalize these results by taking into account the spin-state dependence of the activation parameters of the conductivity.

Mots clés: Spin crossover; Charge transport; High pressure

Domaines: Chimie de coordination

Andrei-Cristian Gheorghe, Yurii S. Bibik, Olesia I. Kucheriv, Diana D. Barakhtii, Marin-Vlad Boicu, et al.. Anomalous Pressure Effects on the Electrical Conductivity of the Spin Crossover Complex [Fe(pyrazine){Au(CN) 2 } 2 ]. Magnetochemistry, 2020, 6 (3), pp.31. ⟨10.3390/magnetochemistry6030031⟩. ⟨hal-03019757⟩