115755-82-3

Basic information

• Product Name: CIS-1,2-DICYANO-1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)ETHENE
• Synonyms: CIS-1,2-DICYANO-1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)ETHENE;1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)-CIS-1,2-DICYANOETHENE;dicyanobistrimethylthienylethene
• CAS NO: 115755-82-3
• Molecular Formula: C₁₈H₁₈N₂S₂
• Molecular Weight: 326.48
• Mol File: 115755-82-3.mol
• Article Data: 1

Chemical Properties

• Melting Point: 162-164 °C
• Boiling Point: 441.5±45.0 °C(Predicted)
• Appearance: /
• Density: 1.183±0.06 g/cm3(Predicted)
• CAS DataBase Reference: CIS-1,2-DICYANO-1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)ETHENE(CAS DataBase Reference)
• NIST Chemistry Reference: CIS-1,2-DICYANO-1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)ETHENE(115755-82-3)
• EPA Substance Registry System: CIS-1,2-DICYANO-1,2-BIS(2,4,5-TRIMETHYL-3-THIENYL)ETHENE(115755-82-3)

Safety Data

• Hazardous Substances Data: 115755-82-3(Hazardous Substances Data)

Upstream product

• 112440-49-0 3-(cyanomethyl)-2,4,5-trimethylthiophene 
• 60914-93-4 2-(1,2-dimethyl-1H-indol-3-yl)acetonitrile 

Relevant articles and documents

Thermally Irreversible Photochromic Systems. Reversible Photocyclization of Non-Symmetric Diarylethene Derivatives

Non-symmetric diarylethenes with an indole ring on one end and a thiophene, a benzothiophene, or a pyrrole ring on the other end of the double bond were synthesized in an attempt to get thermally irreversible photochromic compounds having absorption bands at longer wavelengths. 2-(1,2-Dimethyl-3-indolyl)-3-(2,4,5-trimethyl-3-thienyl)maleic anhydride (8a) underwent photoinduced cyclization/ring-opening reactions with relatively high quantum yields (cyclization quantum yield: 0.15; ring-opening quantum yield: 0.40), and the both isomers were thermally stable.The closed-ring form had the absorption maximum at 595 nm with the edge extending to 760 nm.Cyclization/ring-opening reactions of 8a and 2-(1,2-dimethyl-3-indolyl)-3-(2-methyl-3-benzothienyl)maleic anhydride (9a) were induced by Ar ion (488 nm) and He-Ne (633 nm) lasers.