Mass Spectrometry of Benzyne and Cyclopentadienylideneketene

2010 ◽  
Vol 63 (7) ◽  
pp. 1076 ◽  
Author(s):  
Thomas Monsandl ◽  
Graham Macfarlane ◽  
Robert Flammang ◽  
Curt Wentrup
Keyword(s):  
Mass Spectrometry ◽  
High Temperature ◽  
Mass Spectrometer ◽  
Temperature Regime ◽  
Time Scale ◽  
Ring Opening ◽  
Collisional Activation ◽  
High Temperature Regime ◽  
Line Mass ◽  
On Line

The formation of cyclopentadienylideneketene 2 and benzyne 1 in flash vacuum thermolysis reactions is investigated by on-line mass spectrometry. Compounds 13, 14, and 15 all afford ketene 2, which decomposes to benzyne and CO in the high-temperature regime. Cyclopentadienylideneketene 2 is stable on the microsecond time-scale of neutralization-reionization experiments. Collisional activation mass spectrometry of m/z 76 from 14, 15, and 5 indicates that the C6H4•+ ions most likely undergo ring opening in the mass spectrometer.

scholarly journals Characterisation and modelling of transient transport through dense membranes using on-line mass spectrometry

2015 ◽  
Vol 479 ◽  
pp. 213-222 ◽  
Author(s):  
S.C. Fraga ◽  
L. Trabucho ◽  
C. Brazinha ◽  
J.G. Crespo
Keyword(s):  
Mass Spectrometry ◽  
Transient Transport ◽  
Line Mass ◽  
On Line

scholarly journals On-line mass spectrometry: membrane inlet sampling

2009 ◽  
Vol 102 (2-3) ◽  
pp. 511-522 ◽  
Author(s):  
Katrin Beckmann ◽  
Johannes Messinger ◽  
Murray Ronald Badger ◽  
Tom Wydrzynski ◽  
Warwick Hillier
Keyword(s):  
Mass Spectrometry ◽  
Line Mass ◽  
On Line

On-Line mass spectrometer analysis of gasification gas

1995 ◽  
Vol 18 (3) ◽  
pp. 183-192 ◽  
Author(s):  
Åsa Karlegärd ◽  
Adolf Götz ◽  
Ingemar Bjerle
Keyword(s):  
Mass Spectrometer ◽  
Line Mass ◽  
On Line

scholarly journals MAGNETIC INSTABILITY IN A PARITY INVARIANT TWO-DIMENSIONAL FERMION SYSTEM

2000 ◽  
Vol 14 (14) ◽  
pp. 1441-1449 ◽  
Author(s):  
M. ELIASHVILI ◽  
G. TSITSISHVILI
Keyword(s):  
High Temperature ◽  
Temperature Regime ◽  
Ground State ◽  
Finite Temperature ◽  
Two Dimensional ◽  
Fermion System ◽  
Temperature Analysis ◽  
Magnetic Instability ◽  
High Temperature Regime

We consider the parity invariant QED2+1 where the matter is represented as a mixture of fermions with opposite spins. It is argued that the perturbative ground state of the system is unstable with respect to the formation of magnetized ground state. Carrying out the finite temperature analysis we show that the magnetic instability disappears in the high temperature regime.

scholarly journals Stabilization of spin liquid in Kondo lattice: High temperature regime

1997 ◽  
Vol 230-232 ◽  
pp. 490-492 ◽  
Author(s):  
K.A. Kikoin ◽  
M.N. Kiselev ◽  
A.S. Mishchenko
Keyword(s):  
High Temperature ◽  
Temperature Regime ◽  
Kondo Lattice ◽  
Spin Liquid ◽  
High Temperature Regime
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