Structural Diversity of Two Coordination Polymers based on Bis(4-(1H-imidazol-1-yl)phenyl)methanone and Polycarboxylate Coligands: Syntheses, Structures, and Fluorescent Properties

Abstract

Two novel coordination polymers, [Zn₂(Bipmo)₂(Adip)₂ · 2H₂O]_n (I), [Zn(Bipmo)(Adip) · 2H₂O]_n (II) (Bipmo = bis(4-(1H-imidazol-1-yl)phenyl)methanone, H₂Adip = adipic acid) with unprecedented structures, have been synthesized and structurally characterized. by single-crystal X-raydiffraction (CIF files CCDC nos. 1555292 (I), 1555289 (II)). Complex I exhibits 4-fold interpenetrating wave-like sheets, which interpenetrate in a 2D → 2D parallel manner and pillar to generate 3D architectures. Complex II consists of a 2-fold 4-connected 3D coordination polymers network with a point symbol of (6⁵.8). The results indicate that the central metal ions, polycarboxylate and semirigid co-ligands have a great effect on the formation and the structures of the coordination polymers. Moreover, the thermal stability and the luminescent properties of complexes I, II were investigated.