title: Syntheses, crystal structures and photophysical properties of Ag(I) coordination complexes.
abstract: Three Ag(I) coordination complexes, [Ag(pyzca)]n (1) (Hpyzca=pyrazine-2-carboxylic acid), Ag[(HNA)(NA)(H2O)4] (2) (HNA=nicotinic acid) and [Ag1Ag2-(2,3-pydc)]n (3) (H2pydc=pyridine-2, 3-dicarboxylic acid) have been synthesized by the hydrothermal method. Their structures are determined by single-crystal X-ray diffractometer. Complex 1 possesses the 3D infinite structure. Complex 2 is a mononuclear coordination complex and exhibits one 3D infinite network by a large number of hydrogen bonds. In complex 3, two crystallographic independent Ag(I) ions exist, i.e., Ag1 is three-coordinate and Ag2 is two-coordinate, forming the 2D layer structure. At room temperature in the solid state, the IR, FP and UV-Vis spectra of all complexes were measured and investigated in detail. The emission and absorption spectra of the three complexes and their corresponding ligands are compared and analyzed.
authors: School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning 116029, PR China.
authors: Yu-Xian
authors: YX
authors: Chi
authors: Hui-Ping
authors: HP
authors: Dai
authors: Shu-Mei
authors: SM
authors: Li
authors: Jing
authors: J
authors: Jin
authors: Shu-Yun
authors: SY
authors: Niu
authors: Guang-Ning
authors: GN
authors: Zhang
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D009525:Niacin / Q000737:chemistry; D011719:Pyrazines / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002264:Carboxylic Acids; D056831:Coordination Complexes; D011719:Pyrazines; D011725:Pyridines; D009525:Niacin; D012834:Silver