2-imino-1,3-dithietanes, their use as pesticides

Abstract

There are described new 2-imino-1,3-dithietanes of general formula I ##STR1## in which R is the group ##STR2## in which A is CFHal, C(CH.sub.3)C.sub.1-4 -alkyl, C(CH.sub.3)CHal.sub.3, C(CH.sub.3)CF.sub.2 Cl, C(CH.sub.3)CFCl.sub.2, C.sub.2 H.sub.4, C.sub.2 H.sub.3 Hal, C.sub.2 H.sub.2 Hal.sub.2, C.sub.2 HHal.sub.3, C.sub.2 F.sub.2 Cl.sub.2, C.sub.2 F.sub.4 or C.sub.2 F.sub.3 Cl, in which Hal is F or Cl, Y is nitrogen or CH, R.sup.1 is fluoro-C.sub.1-12 -alkyl, fluoro-C.sub.2-12 -alkenyl, fluoro-C.sub.2-12 -alkynyl, fluorocyclopropyl or fluorocyclopropylmethyl; X is oxygen or sulphur, 2 is defined in the specification and n is 0, 1 or 2, as well as their acid addition salts, a process for their preparation and their use as pesticides. The new compounds are especially useful as nematicides.