title: One new dicoumarol-based fluorescent compound: synthesis, crystal structure and metal ions recognition.
abstract: A new dicoumarol-based compound (C6H4)[CH2NHCO(C9O2H4)N(C2H5)2]21 was synthesized and characterized by IR, UV spectroscopy and single-crystal X-ray diffraction analysis. The structure of 1 exhibits a transoid formation with the two coumarin-containing arms sited on the two sides of the center benzene ring. In the crystal packing the molecule further interact with each other and form a three-dimensional framework through π-π stacking interactions and multiform hydrogen bonds. The compound 1 shows the main emission peak at 540 nm corresponding to the green hue in the solid state. The fluorescence recognition behaviors for various metal ions were investigated and 1 exhibits a highly fluorescence-quenching selectivity for Fe(III) ion in the mixed CH3CN-H2O solvent.
authors.affiliation: Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Bai
authors.forename: Ke
authors.initials: K
authors.lastname: Yu
authors.forename: Hui
authors.initials: H
authors.lastname: Pan
authors.forename: Dong-Bin
authors.initials: DB
authors.lastname: Dang
mesh_terms: D018360:Crystallography, X-Ray; D001728:Dicumarol / Q000138:chemical synthesis* / Q000737:chemistry*; D005453:Fluorescence; D006860:Hydrogen Bonding; D007477:Ions; D008670:Metals / Q000737:chemistry*; D008968:Molecular Conformation; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
chemical_list: D007477:Ions; D008670:Metals; D001728:Dicumarol
keywords: Coumarin derivatives; Crystal structure; Fluorescent properties; Recognition