Construction and Characterization of Organic‐Inorganic Hybridized Molecules with Infinite 2D Grid Network and 1D Zigzag Chain Structures

Abstract

Two coordination polymers with a 2D grid network structure of [Cu(L1)]NO3·H2O (1) and [Cu(L1-2H)](AcOH)2· (C2H5)2O·4H2O (2) were obtained by reaction of the flexible tetradentate ligand 1,2-bis(4′-pyridylmethylamino)ethane (L1) with one mol of [Cu(CH3CN)4]NO3 or Cu(OAc)2·H2O. The syntheses of a new bridging ligand 1,2-bis(4′-pyridylmethyleneamino)ethane (L2) and its copper(I) complexes are described. When L2 reacts with [Cu(CH3CN)4]·ClO4 or [Cu(CH3CN)4]·NO3, two interesting complexes with an infinite zigzag chain-like structure [Cu(L2)(CH3CN)]NO3 (3) and [Cu(L2)(CH3CN)]ClO4 (4), involving the coordination of an acetonitrile molecule, were obtained. These coordination complexes were characterized by X-ray crystallography. The results showed that the rigidity of the ligand and the different chemical valence of the transition metal ions have a large effect on the construction of supramolecular frameworks.