A en-templated 3D coordination polymer based on H2pzdc with macrometallocycles

A new Zn(II) coordination polymer, [Zn-3(pzdc)(4)]center dot en (1) (H(2)pzdc = pyrazine-2,3-dicarboxylic acid, en = ethylenediamine), has been prepared under hydrothermal condition. X-ray diffraction analysis shows that 1 has a 3D structure with micropores (calcd. 4.074 x 6.444 angstrom(2)) along the [100] direction filled with en guest molecules. Notably, the pzdc groups connect Zn(II) cations to form a macrometallocycle as the subunit, which is further connected to generate the final framework. Additionally, the luminescent property of compound 1 has been investigated in detail. (C) 2010 Elsevier B.V. All rights reserved.