CYANIDE CARBON ISOTOPE FRACTIONATION IN THE REACTION OF CYANIDE ION AND METHYL IODIDE. CARBON ISOTOPE EFFECT IN THE HYDROLYSIS OF METHYL IODIDE
CYANIDE CARBON ISOTOPE FRACTIONATION IN THE REACTION OF CYANIDE ION AND METHYL IODIDE. CARBON ISOTOPE EFFECT IN THE HYDROLYSIS OF METHYL IODIDE
复制标题
氰化物离子和碘甲烷反应中的氰化物碳同位素分馏。
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
P. E. Yankwich
中科院分区：
文献类型：
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作者：
K. Lynn;P. E. Yankwich
在11.4 ~ 58 ℃，以水为溶剂，研究了碘甲烷氰化反应和碘甲烷水解反应中氰碳同位素的C/sup ~（13）/同位素效应。水解的结果略小于Bender和Hoeg报告的C/sup 14/效应的单一值的预期值，bing为3.5%水平;氰化作用中氰化物碳同位素效应仅约为1.0%。研究结果的Bigeleisen-Wolfsberg-斯莱特三粒子模型的反应系统，特别注意“原子”和“分子碎片”的质量之间的选择在同位素速率常数比的温度无关的因素的计算。这些数据不允许在这些计算基础之间作出明确的选择。（auth）
The C/sup 13/ isotope effects for isotopy at the cyanide carbon in the cyanization of methyl iodide and that in the hydrolysis of methyl iodide were investigated for water solvent at 11.4 to 58 deg . The results for hydrolysis are somewhat smaller than expected from the single value reported by Bender and Hoeg for the C/sup 14/ effect, bing at the 3.5% level; the cyanide carbon isotope effect in the cyanization is only about 1.0%. The results are examined in terms of a Bigeleisen-Wolfsberg-Slater three-particle model for the reacting system, special attention being paid to the choice between "atomic" and "molecular fragment" masses in the calculation of the temperature-independent factor in the isotopic rate-constant ratios. The data do not permit a clear choice to be made between these bases for the computations. (auth)