Magnetic molecular metals based on the organic donor molecule BET (BET = Bis(ethylenethio)tetrathiafulvalene): The series BET2[MCI4] (M3⊕ = Ga, Fe)

• Published in: Advanced materials (Weinheim) 1997, Vol.9 (12), p.984-987
• Main Authors: Coronado, Eugenio, Falvello, Lawrence R., Galán-Mascarós, José R., Giménez-Saiz, Carlos, Gómez-García, Carlos J., Lauhkin, Vladimir N., Pérez-Benítez, Aaron, Rovira, Concepció, Veciana, Jaume
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Conductivity phenomena in semiconductors and insulators; Electronic transport in condensed matter; Exact sciences and technology; Low-field transport and mobility; piezoresistance; Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Organic compounds; Physics; Saturation moments and magnetic susceptibilities; Structure of solids and liquids; crystallography; Structure of specific crystalline solids
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.19970091213

The molecular metals BET2[MCl4] with M = Fe, Ga (see article title for BET) have been prepared and their structural, transport, and magnetic properties investigated. It is shwon that the conducting layers of the organic donor BET are interleaved by the inorganic ions, which are fairly well isolated from each other in the crystal. However, in the case of the Fe, the ions are found not to be magnetically isolated but coupled by exchange interactions. A mechanism is suggested to account for the observed Fe–Fe interaction in this magnetic molecular metal.