Different oxidation states of copper(I, I/II, II) thiocyanate complexes containing 1,2,4-triazole as a bridging ligand:: Syntheses, crystal structures, and magnetic properties of 2-D polymer CuI(admtrz)SCN, linear trinuclear [CuI2CuII(admtrz)6(SCN)2](ClO4)2, and triangular trinuclear [CuII3(admtrz)4(SCN)3(μ3-OH)(H2O)](ClO4)2•H2O(admtrz = 4-amino-3,5-dimethyl-1,2,4-triazole)