Concentration-controlled Zn(II) compounds constructed from N -tosyl- L -glutamic acid and 1,10-phenanthroline.

By controlling the concentration of the reaction system, two zinc(II) complexes, [Zn2(tsgluO)2(phen)2]n(1) and [Zn2(tsgluO)2(phen)2(H2O)2] (2) (H2tsgluO = N-tosyl-L-glutamic acid, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Complexes1and2both crystallize in the triclinic space group P-1. Complex1exhibits a 1-D double-chain structure. Complex2has a dinuclear structure which is extended by hydrogen-bonding interactions to form a 2-D supramolecular network. The structural difference indicates that the concentration plays a crucial role in modulating structures of coordination complexes. The two compounds also show intense fluorescence at room temperature. [ABSTRACT FROM PUBLISHER]