Syntheses, Crystal Structures, and Photoluminescence of Zinc(II) and Cobalt(II) Coordination Polymers Based on Semiflexible 1,4‐Bis(4‐phenoxy)benzenedicarboxylate

Abstract

AbstractHydrothermal reactions of Co(NO3)2·6H2O and Zn(NO3)2·6H2O with 1,4‐bis(4‐phenoxy)benzenedicarboxylic acid (H2bcpb) resulted in the formation of the coordination polymers [Zn(bcpb)(Py)]n (1), and [Co(bcpb)(Py)2]n (2), respectively. Their structures were studied by single‐crystal and powder X‐ray diffraction methods and further characterized by IR spectroscopy, elemental analyses, and thermogravimetric analyses (TGA). Single X‐ray diffraction analyses revealed that complex 1 has a 1D loop chain. Each repeated unit contains two carboxylate ligands and two SBUs (secondary building units), whereas complex 2 has a 2D 4‐connected sql sheet with point symbol (44.62). The complexes are further expanded to 3D supramolecular structures through non‐covalent bonding interactions. Besides, photoluminescent property of complex 1 was also investigated in the solid state at room temperature.