Recoil Reactions of 38 Cl and 80m Br in Binary Organic Liquids

Self Cite

Hot-atom chemistry /Recoil chlorine and bromine/Two stage mechanismAbstract Data from the recoil reactions of 3 'CI and *°mBr in the binary mixtures of (a) o-chlorotoluene with alcohols and aniline and (b) bromobenzene with alcohols and aniline are analysed using the model proposed by URCH. The organic yield in these systems arises from both hot and thermal processes. The unknown parameters consisting of the organic yields in the two stages ( Kg and Kg) and the respective relative reactivities of the recoil halogen towards the two components (S and S' ) are determined by a computer technique. In case of o-chlorotoluene and alcohol mixtures, more reactive component A is, more restricted is the first stage reaction.

Section: Introductionsupporting

confidence: 82%

Reactions of Recoil Halogens in Binary Organic Liquids

Bhave¹,

Rao²

1981

Self Cite

“…1 -3 is shown the variation of organic yield ( Y%) with the composition of the mixture; Y% is plotted versus the mole fraction of the non-chlorinated component. In all the investigated systems, the organic yield decreases in the first part of the curve though less dramatically than in the carbon tetrachloride-alcohol systems [2, 6,7]. The form of the curves is more similar to those obtained for hydrocarbons-carbon tetrachloride mixtures [2]; this can be explained if one considers the behaviour of hot or excited 38 C1 atoms and thermal 38 C1 atoms with different organic molecules.…”

Section: Resultsmentioning

confidence: 68%

Reactions of ³⁷CI (n, γ) ³⁸CI in Binary Mixtures of Aliphatic Compounds

Pertessis‐Keis¹

1984

The reactions of 3 * CI atoms, produced in a high flux nuclear reactor have been investigated in binary mixtures of CCI, with CH3CHJCHO, CH3COOCJH5, CH3COOH and CH3CH2COOH and of CHCI3 with CH 3 COCH 3 . The organic yields fall sharply as the concentration of the chlorinated compounds decrease except in the case of CC1 4 /CH 3 COOH. As in previous works, the results show that the variations of organic yields can be related to the sample compositions if specific reactions cross sections are ascribed to each component.The problem that is investigated in this work, is whether the active group of an aliphatic non-chlorinated compound can influence the shape of the curves mentioned above and the organic yield (extrapolated) of the pure non-chlorinated component [1,2]; and also whether components with the same active group give similar curves despite some difference of behaviour ascribed to changes in molecular size [1,4]. Such similarity has been observed in alcohols [7]; it does not seem to exist between acetic and propionic acid and yet the shapes of the two curves can be explained in the same way.

“…Especially, httle is known about the reactions of recoil atoms, produced by radiative neutron capture, in such systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…And, if so, does the model take into account, at least qualitatively, any such influence? As mentioned above, the model was first applied not to individual products but to total organic yields [18][19][20][21][22][23]. The basic parameters of the model were the "composite reaction cross-sections, a,-" which were related to the sum of all the organic products which could form with the two components of the mixtures.…”

Section: Introductionmentioning

confidence: 99%

Formation of Dichlorobenzenes ³⁸Cl by Recoil in Systems with Chiorobenzene

Kontis

Gasparakis

1984

Hot atoms /Recoil chlorineAbstract By means of a simple model, involving reaction cross-section Parameters referring to the formation of individual products rather than to total yields, it is shown that in binary systems containing chiorobenzene, and an aliphatic component, the three labelled dichlorobenzenes are formed in one-stage reactions at the end of the recoil track, both with and without iodine scavenger present. It is suggested that iodine is involved in the cage processes.