Isomerization of linear C3H3+in its reaction with acetylene, and collisional stabilization of the [C5H5+]*collision complex in a quadrupole ion trap mass spectrometer

✍ Scribed by Mehdi Moini

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 562 KB
• Volume: 3
• Category: Article
• ISSN: 1044-0305
• DOI: 10.1016/1044-0305(92)85004-4

✦ Synopsis

The isomerization of linear C3H 3 (+) in its reaction with acetylene to cyclic C3H 3 (+) was studied with a quadrupole ion trap mass spectrometer. The reaction of linear C3H 3 (+) with (13)C2H2 shows that isomerization takes place via a C5H 5 (+) activated complex that is unstable relative to disproportionation back into the cyclic and linear forms of C3H 3 (+) and acetylene. The formation of carbon-13 labeled cyclic and linear C,Hi indicates that isomerization involves skeletal exchange. Collisional stabilization of the C5H 5 (+) collision complex was achieved at a helium pressure of approximately 1 mtorr.