[Synthesis and antimicrobial action of 4-arylideneamino-3-(alpha,alpha- diphenyl-alpha-hydroxmethyl)-1,4-dihydro-5H-1,2,4-triazino-5-thiones and 6-arene-3-(alpha,alpha-diphenyl-alpha-hydroxymethyl)-7H-s-triazolo(3,4- b) (1,2,4)thiadiazine].