Fungicidal insecticidal and acaricidal tin salts of heterocyclic hydroxamic acids

Abstract

Compounds of the formula ##STR1## wherein Het is a 5- or 6-membered aromatic heterocyclic ring containing 1 to 2 ring nitrogen atoms and the remaining ring atoms carbon atoms optionally substituted with 1 to 2 substituents independently selected from halo, nitro, trihalomethyl, lower alkyl of 1 to 3 carbon atoms, or lower alkoxy of 1 to 3 carbon atoms; R is alkyl of 1 to 7 carbon atoms; R.sup.1 is aryl of 6 to 10 carbon atoms, lower alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, all optionally substituted with 1 to 3 halogen atoms; and a is 0 or 1 are fungicidal and insecticidal, with the proviso that a ring nitrogen is not bonded to the hydroxamic acid ##STR2## moiety.

Dependencies are inferred from the claim text.