Synthesis, crystal structures and NIR luminescence of sandwich-like tetradentate salophen phenoxo-bridged heterotrinuclear metal complexes

作者: Quan Li , Shuo Chen , Pengfei Yan , Peng Chen , Guangfeng Hou

DOI: 10.1080/00958972.2013.776163

关键词:

摘要: 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), Yb (6)], have been isolated from reactions of N,N′-bis(salicylidene)-1,2-(phenylene-diamine) with Ln(NO3)36H2O Zn(OAc)22H2O. X-ray diffraction analysis reveals that 1–6 are isomorphic phenoxo-bridged, sandwich-like {Zn2Ln} core. Near infrared (NIR) luminescence spectra show 6 exhibits typical emission Yb3+ upon excitation at the ligand-centered absorption band 357 nm.

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