Abstract
Halogen bonded lamellar supramolecular motifs have been found in the series of trinuclear crystals of ZnII–LnIII–ZnII complexes with N,N′-bis(5-bromo-3-methoxysalicylidene)-1,3-diamino-2-propanol, with formulae [{Zn(HL)}2(μ-OAc)2Ln]NO3·2CH3OH·2H2O (1,2) and [{Zn(HL)}2(μ-OAc)2Ln]NO3·5.33H2O (3,4), where Ln = La (1), Ce (2), Er (3) and Yb (4). The isoskeletal crystals form monoclinic (1,2) or trigonal (3,4) layers built of halogen bonded dimers or trimers. The role of halogen bonding as a stabilizing force in building of long-range synthon aufbau modules (LSAM) is discussed. The heterotrinuclear coordination compounds were characterized by elemental analysis, FTIR and UV–Vis spectroscopy, thermal analysis, photoluminescence measurements, X-ray crystallography and Hirshfeld surface analyses.
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