Syntheses, Structures and Properties of Two Silver(I) Complexes Constructed from 6-Methyl-2,3,5-pyridine-tricarboxylic Acid

Two complexes constructed from 6-methyl-2,3,5-pyridine-tricarboxylic acid, 1,10-phenanthroline and AgNO3, namely [Ag(H(2)mptc) (phen)]center dot 2H(2)O (1), [Ag (H(2)mptc) (phen)] (2) (H(3)mptc=6-methy1-2,3,5-pyridinetricarboxylic acid, phen=1,10-phenanthroline), have been synthesized by the self-assembly reaction and characterized by X-ray diffraction single crystal structure analysis, elemental analysis, IR. PXRD, fluorescence and thermal analysis. In 1, Ag(I) coordinated to three N atoms from H(2)mptc(-) and phen. In 2, Ag(I) is fourcoordinated by three N atoms from H(2)mptc(-) and phen, and one O atom from the H(2)mptc(-). Complex 2 is more stable on the thermodynamic consideration than 1. The solid-state photoluminescence spectra show that the fluorescent emissions of 1 and 2 are at about 475 nm, which can be attributed to the ligand-to-metal charge transition. CCDC: 970053, 1; 970052, 2.