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本文测定了标题所示一类化合物的~(31)P的化学位移,并讨论了它与取代基电子性间存在如下的关系 δP=-0.9193σ+3.5891F+66.5385提出了~(31)P化学位移与此类化合物的除草活性间存在一定的相关性,其关系如下 PI_(50)=-0.9025π~2+0.9017π-0.5600E_s-0.1620△δP+0.8445I+4.2514 并对此关系的适用性及存在偏差作了初步讨论。
In this paper, the chemical shifts of ~ (31) P in a class of compounds shown in the title were determined and the relationship between the chemical shifts of substituents and the electronic properties of the substituents was discussed. ΔP = -0.9193σ + 3.5891F + 66.5385 The ~ (31) P The relationship between the chemical shifts and the herbicidal activities of these compounds is as follows: PI_ (50) = - 0.9025π ~ 2 + 0.9017π-0.5600E_s-0.1620 △ δP + 0.8445I + 4.2514 Sex and the existence of deviation made a preliminary discussion.