The main focus of this project is the search for extremely metastable materials with certain properties by exploiting novel experimental conditions.  Three different synthetic techniques will be presented: an aliovalent reductive intercalation method, a low-temperature fluorination method, and a topotactic solvothermal reduction method.Utilizing the a-NaFeO2 structural type as a model system, we have developed a multistep soft chemistry approach for the preparation of a series of new layered transition metal oxides. This synthetic procedure results in compounds with the a-NaFeO2 type structure and with transition metals in mixed valent 2+/3+ oxidation states. The oxidation state in the final compounds can be controlled by utilizing AxMO2 (M = Co, Ni, Fe, Mn) precursor phases with different x values. Crystal structures and physical properties of these novel compounds will be presented.Topotactic fluorination and solvothermal reduction of perovskites and related phases including SrFeO3, LaNiO3, and La4Ni3O10 will be reported along with full structural and property characterization including Density Functional Theory calculations.

Soft chemistry synthesis of metastable oxides and oxyfluorides

246th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.