Abstract
Two new zinc compounds, [Zn2(mtz)(nic)2(OH)]n·0.5nH2O (1) and [Zn(phtz)(nic)]2n (2) (Hmtz = 5-methyltetrazole, Hphtz = 5-phenyltetrazole, Hnic = nicotinic acid), have been synthesized by a dual-ligand approach under solvothermal conditions. The compounds were characterized by single-crystal X-ray diffraction, elemental analysis, and infrared spectroscopy, respectively. The X-ray diffraction analysis reveals that both compounds exhibit a noncentrosymmetric polar packing arrangement. Compound 1 is a 3D framework constructed from the zigzag chain subunits of [Zn(nic)]+ with a 4-connected “irl” topology. Compound 2 possesses a 2D 4-connected ‘“sql” topology constructed from the linear chain subunit of [Zn(nic)]+, which are linked together with phtz– ligands. Impressively, both of the two compounds display second-harmonic generation response and ferroelectric behaviors. Furthermore, the photoluminescence of the compounds was also investigated.
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