The present invention relates to new thienodithiine derivatives, to processes for preparing them, to their use for controlling unwanted microorganisms, more particularly phytopathogenic fungi, in crop protection, in the household and hygiene sector and in the protection of materials, and also to crop protection compositions comprising these thienodithiine derivatives.本發明係關於新穎的噻吩并二硫雜己環衍生物、其製備方法、其於作物保護、家庭和衛生領域及材料保護上防治不欲的微生物,特別是植物病原真菌之用途,以及亦關於包含這些噻吩并二硫雜己環衍生物之作物保護組成物。