A 12-Fold ThSi2 Interpenetrated Network Utilizing a Glycine-Based Pseudopeptidic Ligand

Abstract

Abstract:We report the synthesis and characterization of a 3D Cu(II) coordination polymer, [Cu 3 (L 1 ) 2 (H 2 O) 8 ]·8H 2 O (1), with the use of a glycine-based tripodal pseudopeptidic ligand (H 3 L 1 = N,N ,N -tris(carboxymethyl)-1,3,5-benzenetricarboxamide or trimesoyl-tris-glycine). This compound presents the first example of a 12-fold interpenetrated ThSi 2 (ths) net. We attempt to justify the unique topology of 1 through a systematic comparison of the synthetic parameters in all reported structures with H 3 L 1 and similar tripodal pseudopeptidic ligands. We additionally explore the catalytic potential of 1 in the A 3 coupling reaction for the synthesis of propargylamines. The compound acts as a very good heterogeneous catalyst with yields up to 99% and loadings as low as 3 mol %.

Recent Bio-Advances in Metal-Organic Frameworks

“…In addition to peptides, pseudopeptides (backbone-modified peptides) can be used as MOF linkers. In 2018, a ThSi 2 (ths) CP of the formula [Cu 3 (L 1 ) 2 (H 2 O) 8 ]·8H 2 O was reported, which was the first example of a 12-fold interpenetrated ths net [135]. The pseudopeptidic ligand, N,N,N-tris(carboxymethyl)-1,3,5-benzenetricarboxamide or trimesoyl-tris-glycine, was based on glycine, the simplest amino acid (Figure 17).…”