Formation of a three-dimensional hydrogen-bonding network by self-assembly of the CuII complex of a semi-bidentate Schiff base

Abstract

Three-dimensional hydrogen-bonding networks have been found in the crystal structure of the Cu^II complex of the semi-N,O-bidentate Schiff base L₁₄, having both hydrogen donor and acceptor sites. The infinite one-dimensional channels and cavities and the helical structure are presented as a result of the complementary intermolecular hydrogen-bonding interaction (–SO₂ · · · H₂N–). Molecular mechanics calculations show the difference between calculated and X-ray structures of the Cu^II–L₁₄ complex.