Crystal Structure and Luminescent Property of the Magnesium Complex [Mg(phen)(H2O)4]·[3,5-(SO3)H2cat] ·2.5(phen)·3H2O

The Mg(II) complex containing N-donor ligand [Mg(phen)(H2O)4]·[3,5-(SO3)H2cat]·2.5(phen)·3H2O (3,5-(SO3)H2cat = 1,2-dihydroxybenzene-3,5-disufonate anion, phen = 1,10-phenanthroline) structure has been synthesized in water by the reflux method, which has three-dimensional network structure. The single crystal was characterized by X-ray single crystal diffraction, elemental analysis, infrared spectrum, and thermogravimetric analysis methods. The complex crystallizes in the monoclinic system, space group C2, and with Z = 4. The [Mg(phen)(H2O)4]2+ cations, 1,2-dihydroxybenzene-3,5-disufonate anions, 1,10-phenanthroline molecules and free water molecules are interconnected to generate a three-dimensional network structure by O-H···O and O-H···N hydrogen bonds. The π-π packing interactions play important roles in the formation of the structure. The fluorescent property of the complex shows the emission maximum at 425 nm at room temperature.