Coordination characteristics of di-O-picolyl derivative of 1,1'-methylene-bis(2-naphthol): first crystal structure of a monomeric Cu(II) complex of bis{2-[(pyridin-2-yl)methoxy] naphthalen-1-yl}methane

Abstract

Monomeric Cu(II) complex of bis{2-[(pyridin-2-yl)methoxy] naphthalen-1-yl}methane (L) having a composition, {[Cu(L)(H₂O)(ClO₄)](ClO₄)(CH₃OH)₂} (1) has been synthesized and characterized by analytical, spectral and magnetic methods and the structure has been established for the first time based on single crystal XRD. The Cu²⁺ center shows axially elongated octahedron with a bound water and perchlorate moieties, where two of the coordinations were long but within the van der Waals distance. The bound water, perchlorate ions and the methanol of crystallization are primarily responsible for the formation of extended lattice structure resulted from the intra-helical interactions. Complex 1 exhibit catecholase activity as studied using 3,5-di-tert-butyl catechol.