Preparation of mixed-valence CuI-CuII di-copper complex in aqueous solution by mixed-valence giant polyoxomolybdate [MoVI72MoVO372(CH3COO)30(H2O)72]42-

INOR 715

Chaokang Gu, guchaok@auburn.edu1, Anand V Sankarraj, sankaav@auburn.edu2, and Curtis Shannon, shanncg@auburn.edu1. (1) Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, (2) Chemistry and Biochemistry, Auburn University, Auburn, AL 36849
Enzymes with fully delocalized mixed-valence di-copper center as active sites play an essential role in dioxygen processing of living cells. Mixed valence di-copper centered copper complexes are ideal models to study the enzymes redox properties. We report a new method to prepare a mixed-valence CuI-CuII di-copper complex in aqueous acsolution. We use simple di-copper(II) center complex copper acetate (CH3COO)2CuII-CuII(OOCCH3)2 as starting material, and a mixed valence compound, giant polyoxomolybdates [MoVI72MoV60O372(CH3COO)30(H2O)72]42- , as reductant. The interaction between [MoVI72MoV60O372(CH3COO)30(H2O)72]42- and Cu2+ ion is also studied. Cyclic Voltammetry and electron paramagnetic resonance spectroscopy is used to characterize to mixed valence product.
 

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

Sci-Mix
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix

Division of Inorganic Chemistry

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