Syntheses, crystal structures and luminescent properties of two new Zn(II) coordination polymers based on rigid biphenyldicarboxylate

Two new metal coordination polymers [Zn(dpa)]n (1) and {[Zn2(dpa)(PyBIm)(H2O) (OH)]·1.5 (H2 O)}n (2) [H2dpa = Biphenyl-2,4′- dicarboxylic acid and PyBIm = 2-(4-Pyridyl)benzimidazole] have been synthesized and structurally characterized. Compound 1 features a 3D structure with a uninodal 4-connected (42.64) topology based on sod-type frameworks. Compound 2 exhibits a 2D (4,4) layer constructed from secondary building units (SBUs) of dinuclear zinc clusters.