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The first measurements of the temperature dependence of the rate constant k were made, over 409\u2013643\u00a0K, and are summarized as k = 7.1 \u00d7 10\u221212 exp(\u221218.2 kJ mol\u22121\/RT) cm3\u00a0molecule\u22121\u00a0s\u22121 with a confidence interval of \u00b120%. These results address a controversy over the presence of a significant barrier in the addition\/elimination pathway leading to the production of formamide between theoretical models that include the zero-point energy of all modes at the transition state and a model that excludes transitional modes. The latter would lead to a negligible barrier, which is inconsistent with the experiments. 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