Assembly of two novel Lindqvist polyoxoanion-templated coordination polymers with standard honeycomb cavities

Two novel polyoxometalate(POM)-templated coordination polymers: [Cu-2(phnz)(3)][M6O19] (M = Mo for 1, W for 2; phnz = phenazine), have been hydrothermally synthesized and characterized by routine physical methods and single crystal X-ray diffraction. In the compounds, Lindqvist POMs as templates induce the [Cu-2(phnz)(3)] complexes to 2D hexagonal metal-organic framework (MOF), which represents 6(3) topologies of dimensions ca. 13.515 x 13.515 x 13.515 angstrom. Furthermore, the 2D sheets are held together by Lindqvist POMs into 3D supramolecular networks with 1D channel, and Lindqvist POMs site in the channels. The successful syntheses and isolation of two compounds provide a novel example of the utility of POM clusters as templates for self-assembly extended framework with cavities. (C) 2008 Elsevier Masson SAS. All rights reserved.