## The vinylidene cation, [CHyC] t,wasgenerared as a wmsient species by collisionally induced chqe revers31 of the corresponding anion. The cotlisionallf induced mass spectrum of the transienr (CHz=C]z is chvactzrisrically different from that of ionised acetylene.
Toward the spectroscopic identification of vinylidene, H2CC
✍ Scribed by Yoshihiro Osamura; Henry F. Schaefer III
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 319 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The smglet electromc ground state of vmyhdene WIU be very dtfficult to observe spectroscopically, as It rapldly tunnels througfi a small (6 kcal mol-'1 barner to acetylene TrIplet vmyhdene should have a much longer hfetune, and several prelctlons of Its PropertIes are reported here These mclude the mfrared spectrum and a characterlzatton of the allowed 3Bz -
📜 SIMILAR VOLUMES
Neutralization of a beam of vinylidene anions, [ CH,-C] -., by xenon gives rise to a stable CIHz species, having a lifetime 2 0.4 us. Re-ionization with oxygen generates a species which is identified byits collisional activation mass spectrum as the vinylidene radical cation, [CH+Z] +..
Pyrolysis (900 K) of cyclopenteno-1.2,3-thiadiazole with trapping of the products in argon at 20 K gave ethylene and propadienethione. Small quantities of thioketene and trimethylenethioketene were also formed. The infrared bands due to propadienethione were identified by their disappearance on irra