A herbicidal composition which comprises at least one carrier and, as active ingredient, a compound of the general formula ##STR1## in which each of n and m independently is 0 or 1; each of Ar.sup.1 and Ar.sup.2 independently is an aryl group, at least one of Ar.sup.1 and Ar.sup.2 being substituted by one or more of the same or different substituents selected from halogen atoms, alkyl groups, alkoxy groups, haloalkyl groups and haloalkoxy groups; and R.sup.1 is hydrogen, or an alkyl, alkylthio or haloalkyl group having from 1 to 4 carbon atoms, and R.sup.2 is hydrogen or a halogen atom provided that at least one of R.sup.1 and R.sup.2 represents a hydrogen atom. Certain compounds of formula I are novel.
一种
除草剂组合物,包括至少一种载体和作为活性成分的一种通式为##STR1##的化合物,其中n和m各自独立地为0或1;Ar.sup.1和Ar.sup.2各自是芳基基团,其中至少一个Ar.sup.1和Ar.sup.2被一个或多个相同或不同的取代基取代,所述取代基被选择自卤素原子、烷基、烷氧基、卤代烷基和卤代烷氧基的一种或多种;R.sup.1是氢,或者是具有1到4个碳原子的烷基、烷
硫基或卤代烷基,R.sup.2是氢或卤素原子,其中至少一个R.sup.1和R.sup.2代表氢原子。式I的某些化合物是新颖的。