6533b82afe1ef96bd128b696

RESEARCH PRODUCT

Hybrid Molecular Materials Based upon Organic π-Electron Donors and Inorganic Metal Complexes. Conducting Salts of Bis(ethylenediseleno)tetrathiafulvalene (BEST) with the Octahedral Anions Hexacyanoferrate(III) and Nitroprusside

Carlos Giménez-saizJ. M. FabreEugenio CoronadoG.c. PapavassiliouG.a. MousdisCarlos J. Goémez-garcı́aMiguel Clemente-leónJosé Ramón Galán-mascarós

subject

chemistry.chemical_classificationBicyclic moleculeInorganic chemistrySalt (chemistry)Crystal structureCondensed Matter PhysicsMolecular electronic transitionElectronic Optical and Magnetic MaterialsInorganic ChemistryMetalCrystallographychemistry.chemical_compoundOctahedronchemistryvisual_artMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumMoleculePhysical and Theoretical ChemistryTetrathiafulvalene

description

Abstract The synthesis, structure and physical characterization of three new radical salts formed by the organic donor bis(ethylenediseleno)tetrathiafulvalene (BEDS-TTF or BEST) and the paramagnetic hexacyanoferrate(III) anion [Fe(CN)6]3− or the photochromic nitroprusside anion [Fe(CN)5NO]2− are reported: (BEST)4[Fe(CN)6] (1), (BEST)3[Fe(CN)6]2·H2O (2) and (BEST)2[Fe(CN)5NO] (3). Salts 1 and 3 show a layered structure with alternating organic (β–type packing) and inorganic slabs. Salt 2 shows an original interpenetrated structure probably due to the unprecedented presence of (BEST)2+ dications. The three salts are semiconductors although salt 1 exhibits a high room temperature conductivity and a semiconducting–semiconducting transition at ca. 150 K which has been attributed to a dimerization in the organic sublattice.

https://doi.org/10.1006/jssc.2002.9759