Synthesis, structures, luminescence/magnetic properties of complexes of the M/1-hydroxybenzotriazole, M=cobalt, nickel, silver, zinc and copper

Five novel complexes, Co(OBt)2 · 7H2O (1) (OBt = 1-hydroxybenzotriazole ion), Ni3(OBt)6 · 6H2O (2), [Ag(OBt)(HOBt)]n (3), [Zn(OBt)2]n (4) and [Cu2(OBt)4 · 3H2O]n (5) were synthesized by hydrothermal method and characterized by elemental analysis, IR spectroscopy, TGA, XRPD, and single-crystal X-ray diffraction. The results from single-crystal X-ray diffraction indicate that 1–5 are zero-dimensional (0D), zero-dimensional, one-dimensional (1D), and three-dimensional (3D) frameworks, respectively. In particular, 3 is twin crystal; 4 possesses of double-stranded chains; 5 crystallizes in orthorhombic space group P212121 with a helical chain in its structure. The luminescence properties and the magnetic properties of the five complexes were investigated.