Abstract
Three copper(II) complexes, [Cu(L1)(H2O)(ClO4)]·0.5H2O (1), [Cu(L2)(H2O)(ClO4)]·0.5H2O (2), and [Cu(L2)(NCNC(OCH3)NH2)]ClO4 (3), where HL1 = 4-bromo-2-(-(quinolin-8-ylimino)methyl)phenol and HL2 = 1-(-(quinolin-8-ylimino)methyl)naphthalen-2-ol, have been prepared and characterized by elemental analysis, IR, UV–vis and fluorescence spectroscopy and single-crystal X-ray diffraction studies. The copper(II) centers assume five-coordinate square-pyramidal geometries in 1 and 2, whereas square planar copper(II) is present in 3. A methanol molecule has been inserted in the pendant end of the ligated dicyanamide in 3. Various supramolecular architectures are formed by hydrogen bonding, π⋯π, C–H⋯π, and lp⋯π interactions.
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