Synthesis, structure, and properties of two novel copper(II) complexes, [Cu(phen)(L)2]·6H2O and [Cu(phen)3]·(ClO4)2

Two novel copper(II) complexes, namely [Cu(phen)(L)2]·6H2O (1) and [Cu(phen)3]·(ClO4)2 (2) have been synthesized under mild condition (HL = 5-methyl-1H-pyrazole-3-carboxylic acid, phen = 1,10-phenanthroline). We report the structural evidence of discrete water decamer conformation in the solid state. These units are found to act as supramolecular glue in the aggregation of mononuclear copper(II) complex to give a three-dimensional network through hydrogen-bonding. The preliminary investigation on the thermal behavior and the anion exchange property of the complexes are presented.

Graphical abstractA novel Cu(II) complex with pyrazole and 1,10-phenanthroline ligands, which contain supramolecular (H2O)10 morphology. The hydrogen-bonding association leads to the formation of the infinite morphology of water molecules along the b-axis.Figure optionsDownload full-size imageDownload as PowerPoint slide