Synthesis and structures of dinuclear 3,5-bis(trifluoromethyl)pyrazolate complexes of ruthenium

INOR 790

Abdul Waheed1, Richard A. Jones, rajones@mail.utexas.edu2, Xiaoping Yang2, Jennifer A. Moore, jennyannejohn@mail.utexas.edu2, and John G. Ekerdt, ekerdt@che.utexas.edu3. (1) Department of Chemistry, Virginia Tech, Blacksburg, VA 24060, (2) Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX 78712, (3) Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712
This contribution describes the synthesis, structures and properties of dinuclear 3,5-bis(trifluoromethyl)pyrazolate (Pz) complexes of ruthenium. Pentamethylcyclopentadienyl (Cp*) derivatives include [(Cp*RuLi)2(µ4-O)(µ2-Cl)(µ-Pz)3] (1) which has an unusual Ru2Li2O core and [Cp*Ru(µ-Cl)]2(µ-Pz) (2) which is an example of an Ru2+5 species. DFT calculations indicate that the HOMO of 2 has a single unpaired electron which is delocalized over both Ru centers. Other compounds to be described are the simple chloride bridged dimer [RuCl(h6-1,4-Me,iPrC6H4)(h1-Pz)]2 (3) and the asymmetric complex Cp*Ru(µ-O)(µ-h5,h1-C5Me4CH2)Ru(h1-Pz) (4) which is formed via C-H activation of a Me group on Cp*.
 

Organometallics
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006