Water square (uudd) in novel CuII framework structures built from isomeric (aminomethyl)pyridines and oxalate: Synthesis, structure, spectral and DFT studies
A perfect water square in uudd configuration, built from solvent waters has been isolated from a hybrid metal–organic host [Cu(3-aminomethyl)pyridine oxalateOH2·2H2O]n under selfassembly conditions, stabilizing the supramolecular framework through cooperative hydrogen bonding interactions, a rare occurrence among water clusters. The present findings with detailed crystallographic and theoretical studies