Harvey, Emma C. published the artcileIncorporating cobalt carbonyl moieties onto ethynylthiophene-based dithienylcyclopentene switches. 1. Photochemistry, Formula: C15H14Cl2S2, the publication is Organometallics (2014), 33(2), 447-456, database is CAplus.
Dithienylcyclopentenes I [X = H, F; Y = bond: 1o, M = void; 3o, M = Co2(CO)6; 5o, M = Co2(CO)4(dppm); Y = 1,4-C6H4: 2, M = void; 4, M = Co2(CO)6; 6, M = Co2(CO)4(dppm)] undergo photochem. conrotatory cyclization, giving the corresponding complexes II [1-Cs – 6-Cs] thus exhibiting photochromic switching properties. The synthesis and characterization of a series of dithienyl perhydro- and perfluorocyclopentene photochromic mol. switches 1o–6o appended with cobalt carbonyl binding 3-ethynylthiophene and phenyl-3-ethynylthiophene substituents are reported. Their photochromic properties, fatigue resistance, and thermal stability were examined to establish the effect of substituents on their performance as mol. photoswitches. The photochem. properties of the dithienylethene core were retained to the greatest extent by the inclusion of Ph units and a hexafluorocyclopentene ring. The alkyne units of the switches were used to coordinate cobalt carbonyl moieties: i.e., Co2(CO)6 and Co2(CO)4(dppm). The cobalt carbonyl moieties were found to reduce the efficiency of cyclization and cycloreversion of the dithienylethene unit. D. functional theory was used to identify the excited states responsible for cyclization.
Organometallics 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, Formula: C15H14Cl2S2.
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