The structures ofcthylidcne and propylidene in their lowest singlet states :ue considered using INDO lnd MIND 112 calculations. Using a gadicnt optimization method, it is found that R!INDO/Z predicts no encrg minimu.n f-or singlet ethylidenc, while INDO predicts non-&ssic4 bridged structures for the
Rate constants for the gas-phase reactions of OH radicals and Cl atoms with CH3CH2NO2, CH3CH2CH2NO2, CH3CH2CH2CH2NO2, and CH3CH2CH2CH2CH2NO2
β Scribed by Ole J. Nielsen; Howard W. Sidebottom; Denis J. O'Farrell; Michael Donlon; Jack Treacy
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 514 KB
- Volume
- 156
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
Rate constants for the reactions of OH radicals and Cl atoms with CH,CH,NO>, CH,CH,CH,NO,, CH3CH2CH2CHzN02, and CH,CH2CH2CH,CH2N02 have been determined at 295+3 K and a total pressure of approximately 1 atm. The OH rate data were obtained using both the absolute rate technique of pulse radiolysis combined with kinetic spectroscopy and a conventional photolytic relative rate method. The Cl rate constants were measured using only the relative rate method. The results are discussed in terms of reactivity trends.
π SIMILAR VOLUMES
A study of the reaction initiated by the thermal decomposition of di-t-butyl peroxide (DTBP) in the presence of (CHa)?C=CHz (B) at 391-444 K has yielded kinetic data on a number of reactions involving CH3 (M.), (CH&CCHzCH3 (MB.) and ( C H ~) ~C C H ~C ( C H ~) Z C H ~C H ~ (MBB.) radicals. The cross
Excess molar volumes at the temperature 298.15 K were measured for , and {xCH3(CH2)4 CH3 +(1x)CH3(CH2)3OH}. Excess molar volumes were determined using an Anton Paar DMA 60/602 densimeter. The experimental values obtained in this work were compared with results obtained using methods which estimate
## Abstract Rate constants for the gasβphase reactions of CH~3~OCH~2~CF~3~ (__k__~1~), CH~3~OCH~3~ (__k__~2~), CH~3~OCH~2~CH~3~ (__k__~3~), and CH~3~CH~2~OCH~2~CH~3~ (__k__~4~) with NO~3~ radicals were determined by means of a relative rate method at 298 K. NO~3~ radicals were prepared by thermal d
Excess molar volumes at the temperature 298.15 K of the ternary mixtures: , and of the binary mixtures: , and {xCH3(CH2)5OH + (1-x)Cl(CH2)5CH3} were determined using a densimeter. All the experimental values were compared with the results obtained by empirical expressions for estimating ternary pr