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  • 1
    Electronic Resource
    Electronic Resource
    The individual composition and antiknock properties of surakhany gasoline (1957)
    Springer
    Russian chemical bulletin 6 (1957), S. 1112-1116 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. The nature of the constituents of the gasoline of Surakhany selected oil was determined. 2. Determinations were made of the engine performance of mixtures of hydrocarbons of the different classes entering into the composition of the gasoline under investigation; the tests established that the order of decreasing rating of these hydrocarbons is: pentamethylenes, hexamethylenes and paraffins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01169390
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  • 2
    Electronic Resource
    Electronic Resource
    Constants of chain transfer in the telomerization of ethylene with chloroform (1965)
    Springer
    Russian chemical bulletin 14 (1965), S. 411-417 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. The particular and general chain transfer constants were measured in the reaction of telomerization of ethylene by chloroform, and the influence of temperature on the conversion constants of the telomer radicals in this reaction was studied. 2. Conducting the telomerization of ethylene with carbon tetrachloride and chloroform without mixing or under heterogeneous conditions leads to a substantial increase in the chain transfer constants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00846594
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  • 3
    Electronic Resource
    Electronic Resource
    Mechanism of the telomerization of ethylene by carbon tetrachloride and chloroform (1966)
    Springer
    Russian chemical bulletin 15 (1966), S. 2032-2038 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The scheme of Alfrey and Price was used to evaluate the inductive influence of the trichloromethyl group. The polar characteristics of the radicals CCl3(CH2CH2)n−1CH2CH2 with number of monomer units n from one to five were determined, and it was established that the electron donor character of the telomer radicals gradually decreases as the CCl3 group approaches the radical center, while the CCl3CH2CH2 radical becomes a stronger electron acceptor. 2. The rate of interaction of the CCl3CH2CH2 radical with CCl4 is substantially lower than with CHCl3, in contrast to the higher telomer radicals. 3. Using ratios containing only the rate constants of the reactions of chain transfer of trichloroalkyl radicals with CCl4 and CHCl3 (K′tr and Ktr), it was shown that the increase in the particular constants of transfer (C′n and Cn) when n increases from one to five monomer units due to a substantial degree to a change in the rate constant of the reactions of chain transfer (as a result of a decrease in the inductive influence of the CCl3 group).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867693
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  • 4
    Electronic Resource
    Electronic Resource
    Polar effects in the telomerization of propylene and ethylene by carbon tetrachloride (1967)
    Springer
    Russian chemical bulletin 16 (1967), S. 2133-2142 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The constants of transfer of radicals of various chain lengths were determined in the telomerization of C3H6 with CCI4 within a broad range of temperatures and ratios of the reagents. The increase in the particular transfer constants, by almost two orders of magnitude when n is increased from one to four, is due chiefly to a change in the activation energies, and not to steric effects in the corresponding elementary reactions. 2. On the basis of a comparison of the absolute rate constants of certain addition reactions, to be found in the literature, it was hypothesized that the increase in the particular constants with increasing n in the telomerization of C2H4 and C3H6 with CCl4 is determined to a substantial degree by the change in the rate constant of the substitution reaction as a result of a decrease in the inductive influence of the CCl3 group. 3. The Bamford scheme was used for qualitative evaluation of the nature and degree of polarization of the transition states of reactions of chain transfer of certain radicals with CCl4 and a semiquantitative calculation of the particular constants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00913295
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  • 5
    Electronic Resource
    Electronic Resource
    Constants of chain transfer in the telomerization of vinyl chloride with chloroform (1968)
    Springer
    Russian chemical bulletin 17 (1968), S. 2357-2363 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The constants of chain transfer of radicals with n=1–3 in the telomerization of vinyl chloride with chloroform at 55, 90, 115, and 135° were determined within a broad range of reagent ratios. 2. All the constants of transfer were two orders of magnitude lower than in the telomerization of CHCl3 with ethylene or propylene, but were more sensitive to the temperature; the particular constants change negligibly with increasing n. 3. In the consideration of the mechanism of the telomerization of vinyl chloride with CHCl3, the Bumford correlation scheme was used to estimate the polarity of the reagent and the possible contribution of polar structures to the transition states of reactions of substitution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00903381
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  • 6
    Electronic Resource
    Electronic Resource
    Relative configurations of racemic diastereomeric modifications of 1,1,1,7-tetrachloro-3,5-dimethyloctane (1970)
    Springer
    Russian chemical bulletin 19 (1970), S. 740-745 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions A hypothesis on the relative configurations of the diastereomeric racemic pairs of 1,1,1,7-tetrachloro-3,5-dimethyloctane was advanced on the basis of the data of the PMR and IR spectra, as well as epimerization in the absence of anhydrous A1C13.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867225
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  • 7
    Electronic Resource
    Electronic Resource
    Stereodirectedness of the radical telomerization of propylene with CCl4 in the presence of certain compounds of the transition metals (1971)
    Springer
    Russian chemical bulletin 20 (1971), S. 258-261 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The distribution of racemic i-, s-, and h-forms of 1,1′,1″,7-tetrachloro-3,5-dimethyloctane and the particular chain transfer constants of the radicals CCl3[CH2CH(CH)3]n with n=1, 2 in the radical telomerization of propylene with CCl4 in the presence of Fe(CO)5,π-allylirontricarbonyl chloride, iron triacetyl acetonate, FeCl3, Co2(CO)8, and the systemα-TiCl3-Al(C2H5)3 were studied. 2. All the initiating additives (with the exception of the Ti-Al system) somewhat increased the yield of the i-form of T3 at 105 and 145° and changed the distribution of s- and h-forms in comparison with peroxide initiation. At 200°, no influence of the method of initiation on the distribution of the i-, h-, and s- forms of T3 was detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00869020
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  • 8
    Electronic Resource
    Electronic Resource
    Radical reaction of methallyl chloride and polychloromethanes withβ-elimination of chlorine atom (1972)
    Springer
    Russian chemical bulletin 21 (1972), S. 1282-1287 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions A study was made of the radical reaction of methallyl chloride with CCl4 and CHCl3 in the presence of peroxide initiators. On the basis of the structures of the isolated products and certain kinetic data a reaction mechanism was proposed with the postulatedβ-elimination of the chlorine atom from the intermediate radicals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00854545
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  • 9
    Electronic Resource
    Electronic Resource
    Catalysis of telomerization of vinyl chloride with CCl4 by some iron compounds and effect of adding CH3OH (1972)
    Springer
    Russian chemical bulletin 21 (1972), S. 1712-1716 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. In the radical telomerization of vinyl chloride with CCl4, catalyzed by Fe(CO)5, Fe(AA)3 or FeCl3, the yield of the adduct increases when compared with peroxide initiation. The amount of the adduct passes through a maximum when the catalyst concentration is increased. An increase in the relative yield of the higher telomer homologs, as well as a reduction in the telomerization rate, is observed in the presence of Fe(CO)5 or FeCl3 when dilution is with methanol. 2. It was shown that direct reaction of the intermediate or starting chlorine-containing iron compound with electrophilic CCl3(CH2CHCl)n . radicals is possible via the mechanism of ligand transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00851185
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  • 10
    Electronic Resource
    Electronic Resource
    Investigation of the stereochemistry of the radical telomerization of propylene by polyhalomethanes by the method of conformational PMR analysis (1973)
    Springer
    Russian chemical bulletin 22 (1973), S. 2164-2170 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. The stereochemical radical telomerization of propylene with CCl4 and CBrCl3 was investigated by the method of conformational PMR analysis at 60°. The relative configurations of diastereomeric racemic forms of the telomer CCl3CH2CH(CH3)CH2CHBrCH3 were established according to conformational data, considering the previous independent assignments for CCl3CH2CH(CH3)CH2CHCICH3 and structurally close chiral polychloroalkanes. 2. The reactions of chain transfer to CCl4 and CBrCl3 forα, γ-disubstituted aliphatic radicals have the same stereodirection. The approach of the telogen to the radical from the side opposite to the position of the substituent in the next-to-last monomer unit proved to be the preferential direction of attack. 3. Differences in the parameters of the PMR spectra of diastereomeric forms of nonsymmetrical polyhalosubstituted aliphatic hydrocarbons with two chiral centers from the similar dissymmetrical compounds retaining certain elements of symmetry, important for the assignment of the configurations, were detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01199601
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