Octamolybdate subunits as building blocks in the hydrothermal synthesis of organically templated mixed metal oxides: the synthesis and X-ray characterization of [Cu2Mo4O13(3,3 '-bipy)(2)]center dot H2O, [CuMo4O13(Hdipyreth)], and [Cu(dpp)](2)[Cu-2(alpha-Mo8O26)(dpp)(2)]center dot 2H(2)O (3,3 '-bipy=3,3 '-bipyridine; dipyreth=1,2-bis(2-pyridyl)ethylene; dpp=4,4 '-trimethylenedipyridine)

The hydrothermal reactions of MoO3, an appropriate Cu(II) source, and a dipodal nitrogen donor ligand yielded a series of bimetallic oxides [Cu2Mo4O13(3,3'-bipy)(2)].H2O(1.H2O), [CuMo4O13(Hdipyreth)] (2), and [Cu(dpp)](2)[Cu-2(alpha-Mo8O26)(dpp)(2)].2H(2)O (3.2H(2)O). (3,3'-bipy = 3,3'-bipyridine; dipyreth = 1,2-bis(2-pyridyl)ethylene; dpp = 4,4'-trimethylenedipyridine). The materials 1.H2O and 2 are constructed from octamolybdate clusters linked through copper-ligand subunits, while 3.2H(2)O exhibits fused octamolybdate building blocks in a two-dimensional molybdate chain. (C) 2002 Elsevier Science Ltd. All rights reserved.