Coudret, Christophe published the artcileElectrochemical oxidation mechanism of photochromic switches: electrodimerisation, ring closure or ring opening?, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Portugaliae Electrochimica Acta (2007), 25(1), 89-101, database is CAplus.
Simple photochromic dithienylethylenes with either perfluoro or perhydro cyclopentene ring, and a variety of substituents were prepared and their electrochem. behavior explored by cyclic voltammetry. All present 2 electron irreversible oxidation waves in their open form, but the radical cation of the open isomers can follow 3 different reaction pathways: dimerization, ring closure, or ring reopening. Whereas the chloro derivative follows a dimerization mechanism (EC2E mechanism), the phenylthio substituted compound displays an efficient oxidative ring closure (ECE or DISP1 mechanism). Interesting electrochromic behavior is associated with this compound, a redox process occurring in the range 0.5-1.5 V is observed by monitoring the absorption species changes (colored species) in function of the applied potential. Also, electrochromic properties are also found in the corresponding ring closed isomers. Depending on the substituents on the thiophene ring and the perfluoro or perhydro cyclopentene ring, open isomers can be obtained from oxidation (chem. or electrochem.) of the corresponding ring closed isomers via EC mechanism. These observations should be taken into account for the potential design of 3-state conjugated systems and photoelec. mol. switching.
Portugaliae Electrochimica Acta published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics