Three polynuclear complexes with bridging triazole ligand: crystal structures

Three polynuclear clusters, Cu₄L₈](ClO₄)₄·4H₂O (1), Zn₃L₆(H₂O)₆](ClO₄)₆·6H₂O (2), and Mn₃L₆(CH₃OH)₆](ClO₄)₆·4.5H₂O (3) (L?=?4-(4-hydroxyphenyl)-1,2,4-triazole), obtained by the reactions of M(ClO₄)₂·6H₂O with L have been isolated and structurally characterized. Complex 1 featured a tetranuclear Cu(I) structure. Both 2 and 3 are linear hexapositive trimers linked by three N1,N2–1,2,4-triazole ligands to the divalent central and terminal metal ions. Furthermore, the luminescence properties of 2 were investigated at room temperature in the solid state.