Synthesis and crystal structure of one-dimensional zinc(II) polymer constructed by salicylate and trans-1,2-bis(4-pyridyl)ethylene

A new zinc(II) compound, [Zn2(Hsal)4(4,4′-bpe)2] · [Zn(Hsal)2(4,4′-bpe)(DMF)(H2O)] · CH3OH (1) (Hsal = salicylate and 4,4′-bpe = trans-1,2-bis(4-pyridyl)ethylene) has been synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, and single crystal X-ray diffraction. The crystal structure consists of three independent moieties: [Zn2(Hsal)4(4,4′-bpe)2], [Zn(Hsal)2(4,4′-bpe)(DMF)(H2O)], and non-coordinated CH3OH molecule. In the compound two independent moieties which are connected by 4,4′-bpe to form 1-D chains, respectively, are further expended to accomplish 2-D network through hydrogen-bonding interactions between non-coordinated methanol and coordinated water molecule or carboxylate oxygen atoms of Hsal ligands.