Hybrid Organic/Inorganic Supramolecular Conductors D₂[Au(CN)₄] [D = Diiodo(ethylenedichalcogeno)tetrachalcogenofulvalene], Including a New Ambient Pressure Superconductor

Abstract

Five diiodo(ethylenedichalcogeno)tetrachalcogenofulvalenes, DIEDSS {2- (5,6-dihydro[1,3]

Crystal engineering strategies towards halogen-bonded metal–organic multi-component solids: salts, cocrystals and salt cocrystals

“…The positive charge on the iodinated tetrathiafulvalene radical cation increases the positive electrostatic potential of the iodine σ-hole, making it a stronger halogen bond donor. Since then, numerous materials have been designed using this general strategy with linear 45,46 and octahedral ([Fe(CN) 5 NO] 2− ) ions (Fig. 2c ), 47 as well as a heteropolymetallate [Re 6 Se 8 (CN) 6 ] 3− (Fig.…”

Solvent dependence of crystal morphology, donor/anion ratio and electrical conductivity in a series of hexagonal supramolecular organic conductors based on diiodo(pyrazino)tetrathiafulvalene (DIP)

“…iodine bond and these can be classified into two types of intermolecular interactions. 2 One is based on an iodine-bonded p-donor and a counter anion that contains lone pair electrons (donor … anion type), [3][4][5][6][7][8][9] and the other one is based on a p-donor containing both iodine atoms and the lone pair electrons (donor … donor type). 10,11 Among the latter crystals, a series of hexagonal supramolecular organic conductors, (DIPSe) 3 (AF 6 ) 1.33 (CH 2 Cl 2 ) 1.2 (DIPSe = diiodo(pyrazino)tetraselenafulvalene, A = P, As, Sb) 11 is a promising basis for developing multi-functionalized conducting materials.…”

Oxygen, sulfur, selenium, tellurium and polonium

“…60 The synthesis, structures and properties of a series of [Au(CN) 4 ] À salts of diiodo(ethylenedichalcogeno)tetrachalcogenofulvalenes were investigated. 61 One is the first ambient pressure superconductor based halogenated TTFs (superconducting transition ca. 2 K).…”