
TY  - JOUR
A1  - Hamann, SD 
A1  - Linton, M 
T1  - Influence of pressure on the rates of deuteration of formate and acetate ions in liquid D<sub>2</sub>O
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1977
VL  - 30
IS  - 9
SP  - 1883
EP  - 1889
KW  - 
UR  - https://doi.org/10.1071/CH9771883 
N2  - We have examined the effects of hydrostatic pressures to 8 kbar on the rates of deuteration of formate and acetate ions in pure D2O at temperatures between 160 and 200°C. The formate reaction is only slightly accelerated by pressure (the activation volume &#916;Vo?, at zero pressure, is -2.5 cm3 mol-1). This fact disproves mechanisms that have been proposed previously for the reaction and we propose an alternative, concerted, molecular mechanism that fits the facts. By contrast, the acetate reaction is significantly accelerated by pressure (&#916;Vo? = -10.5 cm3 mol-1), which is consistent with its occurring by mixed molecular and carbanionic mechanisms. 
ER  -

