Disassembly and Reassembly of Polyoxometalates: The Formation of Chains from an Adaptable Precursor

Two one-dimensional chain complexes with building blocks comprised of polyoxotungstate-ligated lanthanoid centers have been synthesized from the adaptable precursor [As2W19O67(H2O)](14-) through combined disassembly and reassembly processes. Careful control of the reaction and crystallization conditions affords compounds formulated as H3K7Na6[Nd3As4W41O141OH-H2O)(10)]center dot 60H(2)O (1) and KNa[Dy4As2W22O76(H2O)(19)(C2H5NO2)(2)]center dot 20.5H(2)O (2).