W0065

Organic-Inorganic Hybrid Materials: Organodiamine Molybdenum Oxides. J. Zubieta^*, D. Hagrman, P. Zapf, R. LaDuca, R. Haushalter, Dept of Chemistry, Syracuse University, Syracuse, NY 13244

Inorganic oxides are ubiquitous in the geosphere and the biosphere and are represented not only by the complex aluminosilicates which make up vast proportions of igneous rocks, by ores and gems but also by complex oxides fashioned by biomineralization, such as bones, shells, teeth and spicules. The intense contemporary interest in solid state oxides reflects their properties, which endow these materials with applications ranging from heavy construction to microcircuitry. Consequently, there has evolved a significant effort in the manipulation of inorganic oxide microstructures.

One synthetic approach is to mimic Nature's remarkable mixtures of inorganic oxides coexisting with organic molecules. In such materials, the inorganic oxide contributes to the increased complexity and hence functionality through incorporation as one component in a multilevel structured material where there is synergistic interaction between organic and inorganic components. There are now four major classes of materials in which organic components exert a significant structural role in controlling the inorganic oxide microstructure: zeolites, mesoporous oxides of the MCM-41 class, bimineralized materials, and microporous octahedral-tetrahedral or square-pyramidal-tetrahedral framework transition metal phosphates (TMPO) with entrained organic cations. We have recently identified a fifth class of organic-inorganic oxide hybrid materials: ditopic organonitrogen-templated molybdenum oxides. Common structural motifs include molybdate clusters entrained within a scaffolding provided by a coordination cation polymer and one-, two- and three-dimensional heterometallic molybdenum oxide backbones. Hydrothermally synthesized examples of these structural prototypes will be discussed, and strategies for the design of novel metal oxide phases will be presented.