Synthesis, structure and luminescent properties of Cd(II) and Zn(II) complexes constructed from 3,5-dimethyl-2, 6-pyrazinedicarboxylic acid

摘要

[Cd_2(phen)_2(DPZDA)_2(H_2O)_2] ■ 8H_2O (1) and [Zn(phen)(DPZDA)(H_2O)] ■ 2H_2O (2) have been synthesized by reaction of Cd(NO_3)_2/Zn(NO_3)_2 with phen and DPZDA (where phen = 1,10-phenanthroline, H_2DPZDA = 3,5-dimethyl-2,6-pyrazinedicarboxylic acid) in aqueous ethanol solution. Elemental analysis, 1R spectra, thermal analyses and X-ray single crystal diffraction were carried out to determine the composition and crystal structure of 1 and 2. In 1, a 2D supramolecular network containing a novel metal-water decamer were formed by hydrogen bonds. In 2, a 2D supramolecular structure was constructed from hydrogen bonds and pi...pi interactions. Moreover, 1 and 2 displayed photoluminescent properties in the blue range at room temperature.