Molecular self-organization of metal aminothiazoleacetate complexes into H-bonded metallo-supramolecular network based on R44(12) and R44(22) synthons

Two new isostructural d10 metal complexes, M(AmThAA)2 (M = Zn(II), Cd(II); AmThAA = 2-amino, 3-thiazoleacetate), with square pyramidal geometries have been synthesized and characterized by elemental analysis, single-crystal X-ray diffraction and TG analysis. Both complexes crystallize in a monoclinic crystal system, having the C2/c space group, which by utilizing built-in hydrogen-bonding groups (−NH2 and −COO−) extends the molecular complexes into hydrogen-bonded metallo-supramolecular networks. It has been shown that heteromeric N−H⋯⋯O and O−H⋯⋯O hydrogen bonds based on R44(12) and R44(22) supramolecular synthons can be relied upon as effective tools for the assembly and organization of penta-coordinated complexes. Furthermore, both compounds show strong photoluminescence properties at room temperature.

Graphical abstractThe molecular self-organization of two new isostructural d10 metal complexes M(AmThAA)2 (M = Zn(II), Cd(II); AmThAA = 2-amino, 3-thiazoleacetate) results in the formation of 3D H-bonded open frameworks by utilizing R44(12) and R44(22) aminothiazolyl-acetate synthons.Figure optionsDownload full-size imageDownload as PowerPoint slide