Abstract
Six phenoxo-bridged tetradentate salophen heterotrinuclear Zn2Ln complexes, [Ln(ZnL)2(NO3)3(CH3OH)2]·CH3OH·CH2Cl2 [Ln = Pr (1), Nd (2)] and [Ln(ZnL)2(NO3)3(CH3OH)]·CH3OH·CH2Cl2 [Ln = Eu (3), Ho (4), Er (5), and Yb (6)], have been isolated from reactions of N,N′-bis(salicylidene)-1,2-(phenylene-diamine) with Ln(NO3)36H2O and Zn(OAc)22H2O. X-ray diffraction analysis reveals that 1–6 are isomorphic with phenoxo-bridged, sandwich-like {Zn2Ln} core. Near infrared (NIR) luminescence spectra show that 6 exhibits typical emission of Yb3+ upon excitation at the ligand-centered absorption band at 357 nm.
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