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Kinetics of dinitrogen reduction in the presence of a vanadium(II)-catechol complex

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Abstract

The kinetics of dinitrogen reduction in alcohol solutions of a vanadium (II)-catechol complex as well as the dependence of NH3 yields on N2 pressure in alcohol and water solutions agree with the kinetic equation

$$ - \frac{{d[V(II)]}}{{dt}} = k_1 [V(II)]^2 [N_2 ] + k_2 [V(II)]^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} $$

where the first term corresponds to N2 reduction and the second to H2 formation in the reaction of V(II) with the solvent. A polynuclear transition state is suggested for dinitrogen reduction.

Abstract

Изучение кинетики восстановления азота в спиртовых растворах V(II)-пирокатехинового комплекса, так же как зависимости выхода аммиака от давления азота в спиртовых и водных растворах соответствуют кинетическому уравнению

$$ - \frac{{d[V(II)]}}{{dt}} = k_1 [V(II)]^2 [N_2 ] + k_2 [V(II)]^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}} $$

в котором первый член относится к восстановлению N2 и второй — к образованию H2 в реакции V(II) с растворителем.

Предложено полиядерное переходное состояние для восстановления N2 в комплексе.

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References

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Luneva, N.P., Nikonova, L.A. & Shilov, A.E. Kinetics of dinitrogen reduction in the presence of a vanadium(II)-catechol complex. React Kinet Catal Lett 5, 149–156 (1976). https://doi.org/10.1007/BF02279783

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  • DOI: https://doi.org/10.1007/BF02279783

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