Mixed anion-induced Salen-based Zn2Ln3 (Ln=Nd, Yb or Er) complexes with near-infrared (NIR) luminescent properties

Feng, Heini; Zhang, Zhao; Feng, Weixu; Su, Peiyang; Lü, Xingqiang; Fan, Daidi; Wong, Wai‐Kwok; Jones, Richard A.; Su, Cheng‐Yong

doi:10.1016/j.inoche.2014.02.034

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…Prior to synthesis, we reviewed the literature and summarized two synthetic methodologies (Scheme 1 & Table 1). 30,34,[41][42][43][44][45][46][47][48] The first incorporates the in situ blending of Zn, Ln sources and the ligand ( Table 1, entries 1-3, 10), whereas the second, which is in favour, incorporates the stepwise Please do not adjust margins Please do not adjust margins synthesis of the neutral ZnL unit, which in turn reacts with the corresponding Ln source (Table 4-9, 11, 12). The ligand indeed shows a dinucleating character binding to both 3d and 4f metal ions.…”

Section: Resultsmentioning

confidence: 99%

Dinucleating Schiff base ligand in Zn/4f coordination chemistry: synthetic challenges and catalytic activity evaluation

et al. 2018

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Four Zn/4f polynuclear coordination clusters (PCCs) formulated as [ZnII2DyIII2L2(CO3)2(NO3)2] (1), [ZnIIYIIIL(NO3)2(o-van) (MeOH)] (MeOH) [2 (MeOH)] and [ZnIILnIIIL(NO3)2Cl(EtOH)] where Ln is Dy (3) and Y (4) and where H2L is the dinucleating Schiff base ligand N,N'-bis(3-methoxysalicylidene)cyclohexane-1,2-diamine and o-van is ortho-vanillin, were prepared and fully characterised for the first time. These air-stable heterometallic PCCs, obtained in high yields from commercially available materials, were shown to remain stable in solution in their dinuclear [ZnIILnIIIL] form. Their catalytic activity was evaluated in various catalytic transformations including the Friedel-Crafts alkylation of 2-acyl imidazoles with indoles.

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