Novel peroxodiphosphatomolybdate -structural and 31P NMR study-

INOR 693

Koji Aoki, Keisuke Iwata, Masato Hashimoto, mh1043@sys.wakayama-u.ac.jp, and Seichi Okeya, okeya@sys.wakayama-u.ac.jp. Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, Sakaedani 930, Wakayama, 640-8510, Japan
A novel peroxodiphosphatotetramolybdate, [(P2O7)(MoO(O2)2)2(Mo(OH2)O(O2)2)]4- was isolated as a potassium-tetramethylammonium salt and the structure was analyzed by X-ray (see figure). The diphosphate group acts as a μ4 ligand, monodentate to two Mo atoms and bidentate to the other two. All molybdenum atoms have one terminal oxo and two peroxo groups. Two of the four share two oxygen atoms with the diphosphate. The other two share one oxygen atom with the diphosphate, and have one coordinated water. The anion is supported by potassium cations and intramolecular hydrogen bonding between coordinated water molecules and peroxo oxygen atoms. The anions are connected by potassium cations to form a 1-D double chain in the crystal. The detailed structure and results of 31P NMR study will be discussed.

 

Polyoxometalates and Related Clusters in Chemistry and Nanoscience
7:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Inorganic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007