Formation of dimeric parent cations in aromatic hydrocarbons☆
Sieck, LW; Gorden jr., R
HERO ID
856048
Reference Type
Journal Article
Year
1976
Language
English
| HERO ID | 856048 |
|---|---|
| In Press | No |
| Year | 1976 |
| Title | Formation of dimeric parent cations in aromatic hydrocarbons☆ |
| Authors | Sieck, LW; Gorden jr., R |
| Journal | International Journal of Mass Spectrometry and Ion Physics |
| Volume | 19 |
| Issue | 3 |
| Page Numbers | 269-286 |
| Abstract | Third-order rate coefficients have been determined at 295 K for the formation of dimeric parent cations in benzene, benzene-d6, toluene, the xylenes, mesitylene, and fluoro- and chlorobenzene using the NBS high pressure photoionization mass spectrometer. The reactions are all quite fast, the rate coefficients falling in the range 0.5-6 · 10-25 cm6 molecule-2 s-1. The differences in rates observed are rationalized in terms of structural (geometric) considerations, and upper limits are established for the binding energies in (C6H6)2+ and (C6H5CH3)2+. The temperature dependence for production of (C6D6)2+ has been determined from 227 to 316 K, and the rate coefficient seems to obey a simple 1/T relationship over this range. The detection of trimeric species in benzene is also reported for the first time. Additional experiments involving benzene-nitric oxide mixtures are also reported, which include detection of an apparent equilibrium of the type NO+ + C6H6 ⇆ C6H6+ + NO. © 1976. |
| Doi | 10.1016/0020-7381(76)80011-3 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/0020738176800113 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |