Self-assembly from silver(І) salts and 3,5-dimethyl-4-amino-1,2,4-triazole: syntheses and crystal structures

Two new complexes, [Ag(μ2-admtrz)(C6H5COO)]2·2H2O (1) and {[Ag3(μ3-admtrz)2(NO3)2](NO3)}n (2) (admtrz = 3,5-dimethyl-4-amino-1,2,4-triazole) have been synthesized and characterized. The compounds crystallize in the monoclinic system P21/n space group for 1 and in the orthorhombic system Fdd2 for 2. Single crystal X-ray analysis reveals that compound 1 assumes a three-dimensional structure via hydrogen-bonding interactions in which each Ag(І) ion is coordinated by two nitrogen atoms from the ligand admtrz and one oxygen atom from C6H5COO− anion. While for two-dimensional bilayer cationic framework 2, there consists three-coordinated and two-coordinated silver centers, and part NO3− anions participate to coordinate with Ag(І) ions.