Syntheses,crystal structures,and fluorescence properties of two isomorphic binuclear compounds incorporating N-acetyl-N-phenylglycinate with N-donor co-ligands

In this study, two new isomorphic binuclear compounds, [Ln(µ-NAP)₄(NAP)₂(phen)₂]?·?H₂O (1) and (2) (Ln?=?Eu, Tb, NAP?=?N-acetyl-N-phenylglycinate; phen?=?1,10-phenanthroline), have been synthesized and characterized by infrared spectroscopy, elemental analysis, and X-ray crystallography. These compounds crystallize in a triclinic form with space group Pī with a?=?11.7519(11), b?=?13.4293(12), c?=?14.0686(13)?Å, V?=?1992.7(3)?ų, and Z?=?1. Single-crystal X-ray structural analysis reveals that 1 is binuclear, assembled into a 3-D supramolecular network with self-complementary double hydrogen-bonding interactions and aromatic π–π interactions. Fluorescence properties of 1 and 2 are also discussed.