Synthesis, Characterization and Coordination Properties of a Novel Thiacalix[4]arene with Diagonal Quinolin-8-yloxy Pendants

A novel conic thiacalix[4] arene derivative ( 1) with diagonal quinolin-8-yloxy pendants via oxyethylene spacer has been synthesized in one step. The coordination properties of the new ligand towards Ni2+, Co2+ and Zn2+ ions were studied by UV-vis, fluorescent spectra and 1 H NMR titration. The results showed that 1 formed very stable complexes with the three metal ions, and the stoichiometries of 1-Ni2+, 1-Co2+ and 1-Zn2+ were 1: 1, 1: 2 and 1: 2, respectively.