New complexes constructed based on (1H-tetrazol-5-yl)phenol: Synthesis, structures and properties

Four new complexes [Ni-3(L-1)(3)(H2O)(10)] (1), [Zn-3(L-2)(3)(H2O)]n (2), [Cd(L-2)(H2O)]n (3) and [Cd-2(HL2)(4)(H2O)(4)] (4) have been synthesized by the reaction of 4-(1H-tetrazol-5-yl)phenol (H2L1) and 2-(1H-tetrazol-5-yl) phenol (H2L2) with nickel, zinc, cadmium salts. Complex 1 was synthesized by H2L1 ligand at room temperature conditions, 2 and 3 are synthesized by H2L2 ligand in situ reaction under hydrothermal conditions, 4 is synthesized by H2L2 ligand at room temperature reflux conditions. All of them were characterized by elemental analysis and single-crystal X-ray diffraction, infrared spectrosopy, powder X-ray diffraction and thermogravimetric analysis (TGA). Complexes 1 and 4 are the small-size clusters, the structure of complexes 2 and 3 reveal 2D coordination network. Topologically, complexes 2 and 3 show that binodal networks with a 4-connected and the point symbol of (4(4).6(2)). In addition, magnetic, fluorescence, and UV-Vis properties of these complexes have been studied. (C) 2018 Elsevier Ltd. All rights reserved.