Temperature Dependence of the Rates of Addition of Oxygen Atoms to Olefins

1960 ◽  
Vol 33 (4) ◽  
pp. 1063-1068 ◽  
Author(s):  
R. J. Cvetanović
Keyword(s):  
Temperature Dependence ◽  
Oxygen Atoms

Temperature dependence of rate constants for reaction of oxygen atoms, O(3P), with allene and 1,3-butadiene

1979 ◽  
Vol 57 (9) ◽  
pp. 949-952 ◽  
Author(s):  
W. S. Nip ◽  
D. L. Singleton ◽  
R. J. Cvetanović
Keyword(s):  
Nitrous Oxide ◽  
Phase Shift ◽  
Temperature Dependence ◽  
Rate Constants ◽  
Arrhenius Equation ◽  
Confidence Limits ◽  
Average Value ◽  
Shift Technique ◽  
Decomposition Of Nitrous Oxide ◽  
Oxygen Atoms

Rate constants were determined for the reactions of O(3P) atoms with allene and with 1,3-butadiene by a phase shift technique in which oxygen atoms were generated by modulated mercury photosensitized decomposition of nitrous oxide and monitored by the chemiluminescence from their reaction with NO. Over the temperature interval 297–574 K, the Arrhenius equation for the O(3P) + allene reaction is k1A = (2.99 ± 0.41) × 10−11 exp [(−941 ± 54)/T] cm3 molecule−1 s−1, where the indicated uncertainties are 95% confidence limits. At 299 and 488 K, the rate constant for O(3P) + 1,3-butadiene is essentially the same, within 10%, with an average value of 2.07 × 10−11 cm3 molecule−1 s−1.

The crystal structure of the quartz-type form of GaPO4 and its temperature dependence

1995 ◽  
Vol 210 (10) ◽  
Author(s):  
H. Nakae ◽  
K. Kihara ◽  
M. Okuno ◽  
S. Hirano
Keyword(s):  
Crystal Structure ◽  
Temperature Dependence ◽  
Principal Axes ◽  
Type Form ◽  
Thermal Vibrations ◽  
Oxygen Atoms

AbstractThe structure analyses of the quartz-type form of GaPOThermal vibrations of oxygen atoms are highly anisotropic, being contributed by dominant librational motions of Ga–O–P planes around the Ga–P lines like those of the corresponding moiety in quartz or berlinite. Both the atomic positions and the directions of the principal axes of the thermal ellipsoids are quite reluctant to change with varying temperature unlike those of quartz or berlinite. According to the anharmonic refinements, the Ga–O and P–O bond distances are about 1.84 Å and 1.54 Å, respectively, which are longer than the values obtained in the harmonic refinements.In GaPOIt is indicated that, if GaPO

Collisional quenching of electronically excited oxygen atoms, O(1D): temperature dependence of some rate coefficients

1976 ◽  
Vol 5 (3) ◽  
pp. 173
Author(s):  
G.E. Street ◽  
C.J. Howard ◽  
A.L. Schmeltekopf ◽  
J.A. Davidson ◽  
C.M. Sadowsky ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Rate Coefficients ◽  
Collisional Quenching ◽  
Electronically Excited ◽  
Excited Oxygen ◽  
Oxygen Atoms
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