A copper (II) complex [Cu(4-MeO-salox)
2
](
1
) based on saloxime ligand was synthesized and characterized using single crystal X-ray diffraction studies. The geometry was further emphasized by DFT optimization. The complex was found to be pseudo-macrocyclic mononuclear having square planer geometry. The complex
1
shows two types of supramolecular hydrogen bonding interactions and forms the multi-dimensional framework with the help of CH∙∙∙O, OH∙∙∙O and π∙∙∙π(chelate) interactions. The complex
1
performs as efficient catalyst in catecholase activiy having good turnover number (TON),
k
cat
= 22.97 h
−1
where TON is the number of catechol molecules converted into quinone by catalyst molecule i.e
1
in a unit time.