Synthesis, structure and photoluminescence properties of {Zn(2)Ln(2)} heterometallic complexes with anions of 1-naphthylacetic acid and N-donor heterocyclic ligands

摘要

A series of complexes [(4,4'-diMe-2,2'-bpy)(2)Zn2Eu2(NO3)(4)(naphac)(6)] (1), [(4,4'-dtb-2,2'-bpy)(2)Zn(2)Ln(2)(NO3)(2)(naphac)(8)] Ln = Eu (2), Tb (3), [(Py)(2)Zn(2)Ln(2)(naphac)(10)] Ln = Eu (4), Nd (5), Gd (6), Tb (7), Dy (8), [(Py)(2)Zn2Tm2(NO3)(2)(naphac)(8)] (9) (where naphac is the anion of 1-naphthylacetic acid, 4,4'-diMe-2, 2'-bpy = 4,4'-dimethyl-2,2'-bipyridine, 4,4'-dtb-2,2'-bpy = 4,4'-di-tert-butyl-2,2'-bipyridine, Py = pyridine) were synthesized and structurally characterized. Capabilities of several synthetic routes for obtaining the title compounds were evaluated. Molecular and crystal structures as well as luminescence properties of obtained heterometallic complexes are reported and discussed in detail. (C) 2018 Elsevier B.V. All rights reserved.