Lin, R.-L.; Sun, W.-Q.; Liu, J.-X.; Chu, X.-F. (4,4’-H2bipy)4[Cu(4,4’-Hbipy)2(4,4’-bipy)(P2W18O62)2]&Middot;7H2O: A New Supramolecular Hybrid Based on 1D Cu-N Coordination Polymeric Chain and Wells-Dawson Type Polyoxometelate. ajc 2015, 27, 1009-1012.