Self-Assembly by Tridentate or Bidentate Ligand: Synthesis and Vapor Adsorption Properties of Cu(II), Zn(II), Hg(II) and Cd(II) Complexes Derived from a Bis(pyridylhydrazone) Compound
oleh: Hong-Juan Liu, Rui Yi, Dong-Mei Chen, Chao Huang, Bi-Xue Zhu
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-12-01 |
Deskripsi
Four complexes, [Cu<sub>4</sub><b>L</b><sub>2</sub>(OCH<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>OH)<sub>2</sub>]·2H<sub>2</sub>O (<b>1</b>), [Zn<sub>2</sub><b>L</b><sub>2</sub>Cl<sub>4</sub>]·2H<sub>2</sub>O·2CH<sub>3</sub>OH (<b>2</b>), [Hg<sub>2</sub><b>L</b><sub>2</sub>Br<sub>4</sub>]·4CH<sub>3</sub>OH (<b>3</b>), and {[Cd<b>L</b><sub>2</sub>Cl<sub>2</sub>]·4H<sub>2</sub>O·4CH<sub>3</sub>OH}<sub>n</sub> (<b>4</b>), have been synthesized and characterized from a bis(pyridylhydrazone) ligand (<b>L</b>) with copper(II), zinc(II), mercury(II) or cadmium(II), respectively. Complex <b>1</b> exists as a centrosymmetric tetranuclear dimer with <b>L</b> as deprotonated tridentate ligand. Complexes <b>2</b> and <b>3</b> exist as centrosymmetric metallamacrocycles with <b>L</b> as bidentate ligand. Complex <b>4</b> exists as a 1D looped-chain coordination polymer. The thermal stabilities and vapor adsorption properties of the four complexes were investigated as well.