Compound of the formula in which V represents oxygen; Q represents C-R 5 or nitrogen, where R 5 represents hydrogen, halogen, amino, cyano, nitro, (C 1 -C 6) -alkyl, (C 1 -C 6)-haloalkyl, (C 1 -C 6) -alkylsulphanyl, (C 1 -C 6)-alkylsulphinyl, (C 1 -C 6)-alkylsulphonyl, (C 1 -C 6)-haloalkylsulphanyl, (C 1 -C 6)-haloalkylsulphinyl, (C 1 -C 6)-haloalkylsulphonyl, (C 3 -C 6)-cycloalkyl or (C 1 -C 6)-alkoxy; R 3 and R 6 independently of one another represent hydrogen, halogen, cyano or nitro; or represent (C 1 -C 6)-alkyl, (C 1 -C 6)-haloalkyl, (C 2 -C 6)-alkenyl, (C 2 -C 6)-alkynyl, (C 1 -C 6)-alkoxy, (C 1 -C 6)-haloalkoxy, (C 1 -C 6)-haloalkylsulphanyl, (C 1 -C 6)-haloalkylsulphinyl, (C 1 -C 6)-haloalkylsulphonyl, (C 1 -C 6)-alkylsulphanyl, (C 1 -C 6)-alkylsulphinyl, (C 1 -C 6)-alkylsulphonyl, (C 1 -C 5)-alkylcarbonyl, (C 1 -C 5)-haloalkylcarbonyl or (C 2 -C 6)-alkoxycarbonyl; or represent (C 3 -C 6)-cycloalkyl, (C 3 -C 6)-cycloalkyl-(C 1 -C 3)-alkyl or (C 3 -C 6)-cycloalkenyl, where the radicals mentioned above may optionally be substituted by halogen, alkyl, cyano, nitro, alkoxy, haloalkyl or haloalkoxy; or represent phenyl, heteroaryl, phenyl-(C 1 -C 3)-alkyl or heteroaryl-(C 1 -C 3)-alkyl, where the radicals mentioned above may optionally be substituted by halogen, alkyl, cyano, nitro, alkoxy, haloalkyl or haloalkoxy; or represent NR'R", where R' and R" independently of one another represent hydrogen, cyano, (C 1 -C 4) -alkyl, (C 1 -C 4)-haloalkyl, (C 1 -C 4)-cyanoalkyl, (C 1 -C 4)-hydroxyalkyl, (C 1 -C 4)-alkoxy-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphanyl-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphinyl-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphonyl-(C 1 -C 4)-alkyl, (C 3 -C 4) -alkenyl, (C 3 -C 4) -haloalkenyl, (C 2 -C 4)-cyanoalkenyl, (C 3 -C 4)-alkynyl, (C 3 -C 4)-haloalkynyl, (C 3 -C 4)-cyanoalkynyl, (C 1 -C 4)-alkylcarbonyl or (C 1 -C 4)-alkoxycarbonyl; or where R' and R" together with the nitrogen atom to which they are attached may form an optionally halogen-, alkyl-, cyano-, nitro-, alkoxy-, haloalkyl- or haloalkoxy-substituted, saturated or unsaturated three- to eight-membered ring optionally interrupted by one or more heteroatoms independently selected from the group consisting of O, S and N, with the proviso that two oxygen atoms must not be directly adjacent to one another; or W represents hydrogen or halogen; n represents the number 0 or 1; Y represents hydrogen, halogen, (C 1 -C 4)-alkyl, trifluoromethyl, (C 2 -C 4)-haloalkyl, (C 1 -C 4)-alkoxy, (C 1 -C 4)-haloalkoxy or amino; or represents NR'''R'''', where R''' and R'''' independently of one another represent hydrogen, (C 1 -C 4)-alkyl or (C 2 -C 4)-haloalkyl; X represents hydrogen, halogen, cyano, (C 1 -C 4)-alkyl, (C 1 -C 4)-haloalkyl or (C 1 -C 4)-alkoxy. V represents oxygen; Q represents C-R 5 or nitrogen, where R 5 represents hydrogen, halogen, amino, cyano, nitro, (C 1 -C 6) -alkyl, (C 1 -C 6)-haloalkyl, (C 1 -C 6) -alkylsulphanyl, (C 1 -C 6)-alkylsulphinyl, (C 1 -C 6)-alkylsulphonyl, (C 1 -C 6)-haloalkylsulphanyl, (C 1 -C 6)-haloalkylsulphinyl, (C 1 -C 6)-haloalkylsulphonyl, (C 3 -C 6)-cycloalkyl or (C 1 -C 6)-alkoxy; R 3 and R 6 independently of one another represent hydrogen, halogen, cyano or nitro; or represent (C 1 -C 6)-alkyl, (C 1 -C 6)-haloalkyl, (C 2 -C 6)-alkenyl, (C 2 -C 6)-alkynyl, (C 1 -C 6)-alkoxy, (C 1 -C 6)-haloalkoxy, (C 1 -C 6)-haloalkylsulphanyl, (C 1 -C 6)-haloalkylsulphinyl, (C 1 -C 6)-haloalkylsulphonyl, (C 1 -C 6)-alkylsulphanyl, (C 1 -C 6)-alkylsulphinyl, (C 1 -C 6)-alkylsulphonyl, (C 1 -C 5)-alkylcarbonyl, (C 1 -C 5)-haloalkylcarbonyl or (C 2 -C 6)-alkoxycarbonyl; or represent (C 3 -C 6)-cycloalkyl, (C 3 -C 6)-cycloalkyl-(C 1 -C 3)-alkyl or (C 3 -C 6)-cycloalkenyl, where the radicals mentioned above may optionally be substituted by halogen, alkyl, cyano, nitro, alkoxy, haloalkyl or haloalkoxy; or represent phenyl, heteroaryl, phenyl-(C 1 -C 3)-alkyl or heteroaryl-(C 1 -C 3)-alkyl, where the radicals mentioned above may optionally be substituted by halogen, alkyl, cyano, nitro, alkoxy, haloalkyl or haloalkoxy; or represent NR'R", where R' and R" independently of one another represent hydrogen, cyano, (C 1 -C 4) -alkyl, (C 1 -C 4)-haloalkyl, (C 1 -C 4)-cyanoalkyl, (C 1 -C 4)-hydroxyalkyl, (C 1 -C 4)-alkoxy-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphanyl-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphinyl-(C 1 -C 4)-alkyl, (C 1 -C 4)-alkylsulphonyl-(C 1 -C 4)-alkyl, (C 3 -C 4) -alkenyl, (C 3 -C 4) -haloalkenyl, (C 2 -C 4)-cyanoalkenyl, (C 3 -C 4)-alkynyl, (C 3 -C 4)-haloalkynyl, (C 3 -C 4)-cyanoalkynyl, (C 1 -C 4)-alkylcarbonyl or (C 1 -C 4)-alkoxycarbonyl; or where R' and R" together with the nitrogen atom to which they are attached may form an optionally halogen-, alkyl-, cyano-, nitro-, alkoxy-, haloalkyl- or haloalkoxy-substituted, saturated or unsaturated three- to eight-membered ring optionally interrupted by one or more heteroatoms independently selected from the group consisting of O, S and N, with the proviso that two oxygen atoms must not be directly adjacent to one another; or W represents hydrogen or halogen; n represents the number 0 or 1; Y represents hydrogen, halogen, (C 1 -C 4)-alkyl, trifluoromethyl, (C 2 -C 4)-haloalkyl, (C 1 -C 4)-alkoxy, (C 1 -C 4)-haloalkoxy or amino; or represents NR'''R'''', where R''' and R'''' independently of one another represent hydrogen, (C 1 -C 4)-alkyl or (C 2 -C 4)-haloalkyl; X represents hydrogen, halogen, cyano, (C 1 -C 4)-alkyl, (C 1 -C 4)-haloalkyl or (C 1 -C 4)-alkoxy.