Halogenobenzimidazoles and their use as microbicides

A halogenobenzimidazole of the formula:

• in which
• R1, R2, R3 and R4 independently of one another represent hydrogen, fluorine, chlorine, bromine, iodine, cyano, nitro, straight-chain or branched alkyl having 1 to 8 carbon atoms, straight-chain or branched halogenoalkyl having 1 to 6 carbon atoms and 1 to 13 identical or different halogen atoms, straight-chain or branched alkoxy having 1 to 8 carbon atoms, straight-chain or branched halogenoalkoxy having 1 to 6 carbon atoms and 1 to 13 identical or different halogen atoms, straight-chain or branched alkylthio having 1 to 8 carbon atoms, straight-chain or branched halogenoalkylthio having 1 to 6 carbon atoms and 1 to 13 identical or different halogen atoms, or represent -Z-R5,
• R5 represents aryl having 6 to 10 carbon atoms, it being possible for aryl to be monosubstituted to trisubstituted by identical or different substituents selected from the group consisting of halogen, cyano, nitro, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 atoms, alkylthio having 1 to 4 carbon atoms, halogenoalkyl having 1 to 4 carbon atoms and 1 to 5 identical or different halogen atoms, halogenoalkoxy having 1 to 4 carbon atoms and 1 to 5 identical or different halogen atoms, halogenoalkylthio having 1 or 4 carbon atoms atoms 1 to 5 identical or different halogen atoms, alkylsulphinyl having 1 to 4 carbon atoms, alkylsulphonyl having 1 to 4 carbon atoms, halogenoalkylsulphinyl having 1 to 4 carbon atoms and 1 to 5 identical or different halogen atoms and halogenoalkylsulphonyl having 1 to 4 carbon atoms and 1 to 5 identical or different halogen atoms,
• Z represents O or S,
• X represents fluorine, chlorine, bromine or iodine, and
• A represents the group —SO2—R8, wherein
• R8 denotes 1-pyrrolidinvl, it being possible for the 1-pyrrolidinyl to be monosubstituted to trisubstituted by identical or different substitutents selected from the group consisting of fluorine, chlorine, bromine, methyl, ethyl, n-or i-propyl and/or trifluoromethyl,
• or an acid addition salt or metal salt complex thereof.