Gold Complexes with Dithiothiophene Ligands: A Metal Based on a Neutral Molecule

Mannich reactions of annulated thiophene derivatives

“…Metal-bisdithiolene complexes, such as M(dmit) 2 (dmit = 1,3-dithiole-2-thione-4,5-dithiolate), 1,2 are one class of the most extensively studied hybrid materials owing to their possible applications as organic conductors and/or supperconductor. [3][4][5] Second, they are readily subjected to coupling reaction with trialkyl phosphite to yield dithiophene-tetrathiofulvalene (DT-TTF) compounds. 6,7 DT-TTFs and their charge transfer salts are another class of electroactive species, which are actively studied worldwide.…”

Metallocenium Salts of Nickel Bis(α‐thiophenedithiolate) [M(Cp*)2][Ni(α‐tpdt)2] (M = Fe, Mn, Cr) – Metamagnetism and Magnetic Frustration

“…Within continued efforts in our group to explore new transition‐metal bisdithiolene complexes based on extended conjugated ligands, we previously described a new series of coordination complexes based on thiophenedithiolate ligands. The first studies were concentrated on Au1 and Ni2 complexes, which were generally characterized by rather low oxidation potentials, which were often obtained in their neutral state. This tendency was also observed in the corresponding Cu, Co, and Pt complexes 3.…”

Single-Component Molecular Metals with Extended-TTF Dithiolate Ligands

“…Almeida et al suggested the metallic state of the crystal of the neutral gold dithiolene complex, [Au(R-tpdt) 2 ] (R-tpdt ) 2,3-thiophenedithiolate). 55 Bjφrnholm et al showed that the crystal of [Au(bdt) 2 ] (bdt ) benzene-1,2-dithiolate) consisting of nearly uniform stacks of neutral molecular radicals is a semiconductor with one charge carrier per molecule and exhibits a weak dimerization of the stack at low temperature. 56 Schultz et al found that, in the insulating crystal of [Au(dddt) 2 ] (dddt ) 5,6-dihydro-1,4-dithiin-2,3-dithiolate), the molecules form dimers, as in the case of neutral BEDT-TTF molecules.…”