A new {P2W18} polyoxometalate cluster modified with copper complex based on pz, 2,2-bipy, and in situ amino acid

A new organic-inorganic hybrid compound, [{Cu-2(2,2-bipy)(2)(pz)(gly)}(2)P2W18O62]center dot H2O (bipy=bipyridine, pz=pyrazine, gly=glycine) (1), has been hydrothermally synthesized and characterized by elemental analysis, IR, thermal gravimetric, and single- crystal X-ray diffraction. Compound 1 is an infinite one-dimensional (1-D) chain constructed from [P2W18O62](6-) clusters and linker exhibiting an alternating-type structure via equatorial terminal oxygens of the polyanion. The 1-D chains are further extended into 2-D layers and 3-D supramolecular network via weak interactions. The copper complex of 1 consists of three ligands, in which an in situ glycine from pyrazine precursor was observed. Additionally, the electrochemical and electrocatalytic properties of 1 have been studied.