含有药物配体依诺沙星的二维配位聚合物的合成、晶体结构和光致发光性质研究

Two new 2D coordination polymers ofM(Enox)_2]·C_2H_5OH(M=Zn,1 and Co,2;HEnox=1,4-dihydro-1-ethyl-6-fluoro-4-oxo-7-piperazine-1,8-naphtyridine-3-carboxylic acid)were synthesized under hydrothermal con-ditions.The single crystal X-ray diffraction analyses showed that 1 and 2 are isostructural.The Zn(Ⅱ)in 1 and Co(Ⅱ)ions in 2 are six-coordinated in an octahedral environment with an equatorial plane composed of four oxygen atoms:two of them from the 4-oxo and the other two from 3-carboxylate of two coordinated Enox ligands,forming a stablesix-membered chelating ring with the apical positions occupied by two N atoms of the piperazinyl rings.Thus,themolecules were self-assembled into a 2D neutral square grid with cavity dimensions of 1.3399 nm×1.3399 nm for1 and 1.3389 nm×1.3389 nm for 2,respectively.Compound 1 emits strong blue fluorescence on irradiation by UVlight in the solid state at room temperature.

Synthesis, Crystal Structures and Photoluminescence Properties of Two 2D Coordination Polymer Compounds with Drug Ligand Enoxacin

Two new 2D coordination polymers of M(Enox)₂]·C₂H₅OH (M?Zn, 1 and Co, 2 ; HEnox=1,4‐dihydro‐ 1‐ethyl‐6‐fluoro‐4‐oxo‐7‐piperazine‐1,8‐naphtyridine‐3‐carboxylic acid) were synthesized under hydrothermal conditions. The single crystal X‐ray diffraction analyses showed that 1 and 2 are isostructural. The Zn(II) in 1 and Co(II) ions in 2 are six‐coordinated in an octahedral environment with an equatorial plane composed of four oxygen atoms:two of them from the 4‐oxo and the other two from 3‐carboxylate of two coordinated Enox ligands, forming a stable six‐membered chelating ring with the apical positions occupied by two N atoms of the piperazinyl rings. Thus, the molecules were self‐assembled into a 2D neutral square grid with cavity dimensions of 1.3399 nm×1.3399 nm for 1 and 1.3389 nm×1.3389 nm for 2 , respectively. Compound 1 emits strong blue fluorescence on irradiation by UV light in the solid state at room temperature.