The t-C4H9OCH2 radical in the gas phase: Detection by multiphoton ionization and the reactions with O, O-2, O-3, H, and NO

The detection of the t-C4H9OCH2 and the CH3OCH2 radical by the multiphoton ionization/mass spectrometry/discharge fast flow reactor technique has been investigated in the wavelength region lambda = 4200-530 nm. For both radicals, unstructured bands were observed. The rate of the five reactions of the t-C4H9OCH2 radical with O, O-2, O-3, H, and NO have been determined with reference to the corresponding CH3OCH2 radical reactions in the temperature range of 249-684 K at low pressure (around 2 mbar) t-C4H9OCH2 + O --> products k(1) = (1.80 +/- 0.5) . 10(14)(T/300 K)(0.46) (+/-) (0.15) cm(3) mol(-1) s(-1) (253 less than or equal to T/K less than or equal to 684) (1) t-C4H9OCH2 + O-2 --> products k(2) = (6.7 +/- 0.04) . 10(11)(T/300 K)(-1.1 +/- 0.2) cm(3) mol(-1) s(-1) (2) t-C4H9OCH2 + O-3 --> products k(3) = (6.7 +/- 0.1) . 10(12)(T/300 K)(-0.73 +/- 0.3) cm(3) mol(-1) s(-1) (249 less than or equal to T/K less than or equal to 363) (3) t-C4H9OCH2 + H products k(4) = (2.5 +/- 0.1) . 10(13)(T/300 K)(-0.50 +/-0.1) cm(3) mol(-1) s(-1) (4) t-C4H9OCH2 + NO --> products k(5) = (2.6 +/- 0.1) . 10(10)(T/300 K)(1.5 +/-0.6)cm(3) mol(-1) s(-1) The formation of the primary products is discussed on the basis of mass spectrometric detection using low-energy electron impact ionization.