13801-50-8

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InChI:InChI=1/C6H2Cl4S2/c7-1-2(8)4(10)6(12)5(11)3(1)9/h11-12H

Upstream product

• 118-74-1 hexachlorobenzene 

Relevant academic research and scientific papers

Conformational isomers of 1,2,5,6-tetrathiocins and the photoisomerization of a 1,2,5,6-tetrathiocin into a 1,2,3,6-tetrathiocin: X- ray structures of (C6X4S2)2 (X = F, Cl) and C6f4SSSC

The 1,2,5,6-tetrathiocins (C6X4S2)2 (3a, X = F; 3b, X =Cl) are obtained in high yields by the oxidation of the dithiols 1,2-C6X4(SH)2 (X = F, Cl) with I2 or SO2/

Proton Relay Effects in Pyridyl-Appended Hydrogenase Mimics for Proton Reduction Catalysis

Hydrogenase enzymes are fast proton reduction catalysts, and their synthetic mimics have been widely studied in the context of solar fuel applications. The mimics are still not nearly as effective as the enzyme, as they lack crucial structural elements, i

Immobilized Cobalt Bis(benzenedithiolate) Complexes: Exceptionally Active Heterogeneous Electrocatalysts for Dihydrogen Production from Mildly Acidic Aqueous Solutions

A series of cobalt bis(benzenedithiolate) complexes with varying benzenedithiolate (general abbreviation: bdt2-) ring substitutions (S2C6X42-) were prepared and adsorbed on inexpensive electrodes composed of (a) reduced graphene oxide (RGO) electrodeposited on fluorine-doped tin oxide (FTO) and (b) highly ordered pyrolytic graphite (HOPG). The catalyst-adsorbed electrodes are characterized by X-ray photoelectron spectroscopy. Catalyst loading across the ligand series improved notably with increasing halide substitution [from 2.7 × 10-11 mol cm-2 for TBA[Co(S2C6H4)2] (1) to 6.22 × 10-10 mol cm-2 for TBA[Co(S2C6Cl4)2] (3)] and increasing ring size of the benzenedithiolate ligand [up to 3.10 × 10-9 mol cm-2 for TBA[Co(S2C10H6)2] (6)]. Electrocatalytic analysis of the complexes immobilized on HOPG elicits a reductive current response indicative of dihydrogen generation in the presence of mildly acidic aqueous solutions (pH 2-4) of trifluoroacetic acid, with overpotentials of around 0.5 V versus SHE (measured vs platinum). Rate constant (kobs) estimates resulting from cyclic voltammetry analysis range from 24 to 230 s-1 with the maximum kobs for TBA[Co(S2C6H2Cl2)2] (2) at an overpotential of 0.59 V versus platinum. Controlled-potential electrolysis studies performed in 0.5 M H2SO4 at -0.5 V versus SHE show impressive initial rate constants of over 500 s-1 under bulk electrolysis conditions; however, steady catalyst deactivation over an 8 h period is observed, with turnover numbers reaching 9.1 × 106. Electrolysis studies reveal that halide substitution is a central factor in improving the turnover stability, whereas the ring size is less of a factor in optimizing the long-term stability of the heterogeneous catalyst manifolds. Catalyst deactivation is likely caused by catalyst desorption from the electrode surfaces.

Catalytic Light-Driven Generation of Hydrogen from Water by Iron Dithiolene Complexes

The development of active, robust systems for light-driven hydrogen production from aqueous protons based on catalysts and light absorbers composed solely of earth abundant elements remains a challenge in the development of an artificial photosynthetic system for water splitting. Herein, we report the synthesis and characterization of four closely related Fe bis(benzenedithiolate) complexes that exhibit catalytic activity for hydrogen evolution when employed in systems with water-soluble CdSe QDs as photosensitizer and ascorbic acid as a sacrificial electron source under visible light irradiation (520 nm). The complex with the most electron-donating dithiolene ligand exhibits the highest activity, the overall order of activity correlating with the reduction potential of the formally Fe(III) dimeric dianions. Detailed studies of the effect of different capping agents and the extent of surface coverage of these capping agents on the CdSe QD surfaces reveal that they affect system activity and provide insight into the continued development of such systems containing QD light absorbers and molecular catalysts for H2 formation.

Organo-metal compositions, preparation and use

Complexes of a transition metal and a tetrasubstituted aromatic compound which contain at least two transition metal atoms. At least two of the substituents are -SH groups, the other two substituents being -SH, -OH and -NHR. The complexes are prepared by reacting the tetrasubstituted aromatic compound with a transition metal compound in the presence of a disubstituted aromatic compound. Depending on the relative proportions of the di- and tetra--substituted compounds, the resulting complex may contain more than one residue from the tetra-substituted compound and more than two transition metal atoms. The complexes possess infra-red absorbing properties which vary in dependence on the particular complex, the complexes with more than one residue from the tetrasubstituted compound absorbing radiation of longer wavelength. The compounds can be used to provide infra-red absorbing compositions, for example as a coating or inter-layer for glass. The complexes may be used together with one or more different infra-red absorbing materials. The tetra-substituted aromatic compound may be a tetra-thiol and this can be prepared from an aromatic compound containing at least four halogen substituents by reaction with an alkaline thiol compound in the presence of iron and sulphur in a polar solvent such as dimethyl formamide.