Synthesis of Fe(II) and Cu(II) building blocks for metal–organic frameworks
作者:Rebecca H. Laye、E. Carolina Sañudo
DOI:10.1016/j.ica.2008.09.052
日期:2009.5
In situ reaction of the aminobenzoic acids 2-aminobenzoic acid and 3,5-diaminobenzoic acid with salicylaldehyde provide easy access to the ligands 2-[(2-hydroxyphenyl)methylene}amino]benzoic acid (L1) and 3,5-bis[(2-hydroxyphenyl)methylene}amino]benzoic acid (L2). Addition of a Fe(II) or Cu(II) salt to the solution of the ligand yields the corresponding Fe and Cu complexes. The species synthesized have been structurally characterized by single-crystal X-ray diffraction. The Fe(II) complex [Fe(L1)(MeOH)(3)] (1) crystallizes in the triclinic space group P1. The Cu(II) complex [Cu(L1)] (2) is a one-dimensional chain and crystallizes in the monoclinic space group P2(1). The Cu(II) complex [Et3NH](2)[Cu-2(L2)(2)] (3) crystallizes in the monoclinic space group P2(1)/n. The magnetic properties of 1, 2 and 3 have been studied, showing that the Cu(II) ions of 2 and 3 are ferromagnetically coupled. Complexes 1 and 3 have strong potential as metal-bearing building blocks for the synthesis of metal-organic frameworks. (c) 2008 Elsevier B.V. All rights reserved.