l%mbion fkom O& X3 was detwted folbwing the flash photoIy&s of 0% anb l&ormq$tthafene tnixturas in the gas phase. Assignmen B of the emitting state was confumed by 02, N2 and C&4 quenciGx& studies. The rate constant for l-flnorouaphthalene quench& of 02(' xi ) was estimated to be (7.6 \* 0.7') x MS
Efficiency of O2(1Σg+) formation by O(1D) + O2
✍ Scribed by D.R. Snelling; M. Gauthier
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 364 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The efficiency of formation of 0 (lC*) by energy transfer between O(lD) and 0, has been measured relative to the efficiency of O&J f or 18 t a ion by photol~sis of ozone at 2587 A. ThG "Iwo singlet states of molecular oxygen were formed in a tlow system and their relative concentrations determiaed wit? a caffbrated detection system by measuring their emission at 7620 A and 1.27 /.I. The results show t??t if the cfficiendy of 02(lA,) formation by 02 photolysis is unity then the 1Zg state of 02 is produced in more than (85* 15) 5$ of the collisions deactivating O(lD). This determi~tion IS compared with previous re-.
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Time-resolved emission spectroscopy of 0s ( 'Z: ) and 0s ( 'As) in CCL was used to determine the rate constants kl, , b, and k+ of the triplet state (T,) sensitized formation of the 'Z:, 'As and 'Z; states of 0s. 13 sensitizers of triplet energies 140 GE,< 309 kJ mol-' were investigated. The data ar
The generation of metastable O, ('Xg+) and Oz('Ag) in the H + 0, system of reactions was studied by the flow discharge chemiluminescence detection method. In addition to the Oz('Pg') and Oz(' , H0,(2A~oo) + H02(2AlohO), H02(zA~o,) + HO,(zA~oo), and H Oz(2A~oo) --+ H0,(2A&,o) emissions were detected
The kinetics of the deactivation of Oz('Cg') is studied in real time. Oz('&+) is generated in this system by the O('D) + Oz reaction following 0 3 laser flash photolysis in the presence of excess 02, and it is monitored by its characteristic emission band at 762 nm. Quenching rate constants were obt
Relaxation rates for 02('&+) by nonradiative pathways have been determined using the fast-flow technique. 02 ('\3,+) is formed from 0 2 ( l A g ! by an energy pooling process. 02('AK) is generated by passing purified oxygen through a microwave discharge. Oxygen atoms are removed by distilling mercur
molecules from a discharge have been analyzed by the emission of the infrared atmospheric (0.0) bancfat 12700 A and by the emission of the atmospheric (0,O) band at 7619 A due to the energy pooling reaction ## 202(1Agj -+02('Cs) + 02(%;) . Particular rate constants for the deactivation of 02(1 A