The study investigates the possible origin of electric field effect on the rate of chemical reactions. The geometry of the considered problem mirrors the shape of surface roughness elements as well as the tip of a scanning tunneling microscope (STM) used to study the peculiarities of chemical reaction in an external electrostatic field. The results show that the actual field near truncated cone acting on the chemical system significantly exceeds the average external field. It is shown that in the calculation of the effect of electric field on the rate of chemical reactions, the increase in the electric field near nanoscale protrusions of the metal surface, in particular, near the STM needle, should be taken into account. These results are used to study the Diels-Alder reaction under the influence of electric field.

该研究调查了电场影响化学反应速率的可能原因。所考虑问题的几何形状反映了表面粗糙度元素的形状以及用于研究外部静电场中化学反应的特殊性的扫描隧道显微镜（STM）的尖端。结果表明，作用在化学系统上的圆锥台附近的实际电场大大超过了平均外部电场。结果表明，在计算电场对化学反应速率的影响时，应考虑到金属表面纳米级突起附近，特别是STM针附近电场的增加。这些结果用于研究电场影响下的Diels-Alder反应。