A novel chainlike coordination polymer [Cu-II(2,2'-bipy)(H2O)(2)Al-(OH)(6)Mo6O18](n)(n-), formed from a heteropolyanion [Al(OH)(6)Mo6O18](3-) as a building unit and a copper(II) complex fragment, [Cu-II(2,2'-bipy)(H2O)(2)](2+), as a linker, provides the first example of an extended structure based on an Anderson type of polyanion and a transition metal complex with organic ligand. The intra- and interchain O-H...O hydrogen-bonding interactions are seemingly responsible for the spiral shape of this chain. Crystal data: triclinic space group P (1) over bar, a = 11.2253(18) Angstrom, b = 14.5194(17) Angstrom, c = 15.2672(10) Angstrom, alpha = 112.191(8)degrees, beta = 106.693(9)degrees, gamma = 93.916(13)degrees, and Z = 2.