Conducting chiral nickel(II) bis(dithiolene) complexes: structural and electron transport modulation with the charge and the number of stereogenic centers was written by Abherve, Alexandre;Mroweh, Nabil;Cauchy, Thomas;Pop, Flavia;Cui, HengBo;Kato, Reizo;Vanthuyne, Nicolas;Alemany, Pere;Canadell, Enric;Avarvari, Narcis. And the article was included in Journal of Materials Chemistry in 2021.SDS of cas: 75-57-0 The following contents are mentioned in the article:
Ni(II) bis(dithiolene) complexes can provide crystalline conducting materials either in their monoanionic or neutral forms. The use of chiral dithiolene ligands with one or two stereogenic centers, together with variation of the counterion in the anionic complexes, represents a powerful strategy to modulate the conducting properties of such mol. materials. The chiral ligands 5-methyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (me-dddt) and 5,6-dimethyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (dm-dddt) were generated from the thione precursors (1) and (2) which were structurally and chiroptically characterized. Anionic Ni(II) complexes of these two ligands with tetrabutyl-ammonium (TBA) and tetramethyl-ammonium (TMA) were prepared and structurally characterized, suggesting that it is the nature of the counterion which mostly influences the solid state organization of the complexes. Both TBA and TMA radical anion salts are Mott insulators with antiferromagnetic ground states, as suggested by spin polarized DFT band structure calculations However, the TMA salts are one order of magnitude more conducting than the TBA counterparts. The neutral materials [Ni(me-dddt)2] and [Ni(dm-dddt)2] are direct band gap semiconductors, as determined by DFT and extended Huckel band structure calculations, with their conductivity drastically increased up to 0.05-3.3 S cm-1 under the highest applied pressures of 10-11 GPa. At equivalent applied pressures the dm-dddt materials are more conducting than the me-dddt ones, in agreement with the lower calculated activation energy and larger bands dispersion for the former. This trend follows the structural change when going from one to two Me substituents, since the packing and intermol. interactions are completely different between [Ni(dm-dddt)2] and [Ni(me-dddt)2], the packing of the latter being related to the one of the achiral parent [Ni(dddt)2]. Subtle differences of conductivity are also observed within both series of neutral complexes between the enantiopure and racemic forms. This represents the 1st series of chiral Ni bis(dithiolene) complexes which shows modulation of the conducting properties with the number of stereogenic centers, the conductivity, measured on single crystals, strongly increasing upon applying hydrostatic pressure. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0SDS of cas: 75-57-0).
Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.SDS of cas: 75-57-0
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics