... system 3,5-dithio-2,7-dimethyl[1,2,4]triazepine in acetonitrile were measured at room temperature with different water volume percentages. ... 2). 35 ... of the diphenyl hydrazone of the bis-(sec-amine base) 68 with formaldehyde to yield 4,4′-[p-phenylenebis(3,4,5,6-tetrahydro-2,7 ...