“…Hitherto, there are only a few reported lanthanide coordination complexes incorporating this kind of ligand, and these structures are discrete mononuclear species. 10 In this work, we report the synthesis, structural characterization, fluorescence sensing and magnetic properties of three classes of lanthanide coordination complexes viz . [Ln(bzz)(NO 3 )](NO 3 ) 2 (1Ln; Ln = Sm (1), Eu (2), Gd (3), Tb (4), Dy (5)), [Ln(bzz)(ben) 3 (H 2 O)]·H 2 O (2Ln; Ln = Pr (6), Nd (7), Sm (8), Eu (9), Gd (10), Tb (11), Dy (12), Er (13)), and [Ln 3 (ben) 3 ] (3Ln; Ln = Eu (14), Gd (15), Tb (16), Dy (17), Er (18), Tm (19), Yb (20), Lu (21)).…”