18914-34-6

Basic information

• Product Name: Spiro[2.2]pentane, methylene-
• CAS NO: 18914-34-6
• Molecular Formula: C6H8
• Molecular Weight: 80.1295
• Mol File: 18914-34-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Spiro[2.2]pentane, methylene-(CAS DataBase Reference)
• NIST Chemistry Reference: Spiro[2.2]pentane, methylene-(18914-34-6)
• EPA Substance Registry System: Spiro[2.2]pentane, methylene-(18914-34-6)

Safety Data

• Hazardous Substances Data: 18914-34-6(Hazardous Substances Data)

Upstream product

• 27567-82-4 bicyclopropylidene 

Downstream Products

• 199734-29-7 4-Cyclopropylidene-6,6-diphenyl-1,4,5,6-tetrahydro-pyridine-2-carboxylic acid ethyl ester 
• 205446-86-2 2-bromo-1-methylenespiropentane 
• 14296-80-1 1,2-dimethylenecyclobutane 
• 20571-15-7 spiro<2.3>hexan-4-one 
• 551942-59-7 [1,2-bis(methylene)but-3-en-1-yl]benzene 
• 50874-24-3 trispiro<2.0.0.2.1.1>nonane 
• 2045-78-5 1,3-dimethylenecyclobutane 

Relevant articles and documents

Photoisomerization of bicyclopropylidene and 1,2-dimethylenecyclobutane in rare-gas matrices: Towards the IR-spectroscopic identification of tetramethyleneethane (2,3-dimethylenebutane-1,4-diyl)

Bicyclopropylidene (3) and 1,2-dimethylenecyclobutane (7) have been irradiated in rare-gas matrices. If 1,2-dimethylenecyclobutane (7) is exposed to the light of a KrF excimer laser (λ = 248 nm), an isomeric species is produced, showing an absorption at 793.1 cm-1 (argon matrix) or 791.2 cm- 1 (xenon matrix) in the IR spectrum. The back reaction can be induced with light of k λ = 254 nm. This photochemical interconversion, together with the comparison between the experimental and calculated band positions, supports the assignment of the IR absorption near 790 cm-1 to tetramethyleneethane (5).