Synthesis, structure and supramolecular features of heteronuclear iron(III)–copper(II) complexes of a tripodal imidazole containing ligand
作者:Greg Brewer、Luigi J. Alvarado、Stephanie Lear、Carol Viragh、Peter Y. Zavalij
DOI:10.1016/j.ica.2015.10.002
日期:2016.1
Reaction of [CuH3L1]X-2 (X = ClO4 or BF4) (H3L1 is the tripodal ligand derived from the condensation of tris (2-aminoethyl)amine (tren) with three equivalents of 4-methyl-5-imidazolecarboxaldehyde) with FeL1 in methanol results in isolation of heteronuclear hemideprotonated complexes formulated as [CuH3L1] [FeL1](OH)X}center dot H2O (X = ClO4 or BF4). The complexes are characterized by EA, IR, MS single crystal structure determination and Mossbauer spectroscopy. The room temperature Mossbauer spectra of the complexes consists of a dominant signal attributable to the T-2 (low spin) FeL1. The observed topology is a 2D hexameric ring containing alternating three metal complexes and three water/hydroxide sites. Although the overall compound is achiral individual layers of the complex are homochiral. (C) 2015 Elsevier B.V. All rights reserved.