Addition and Metathesis Reactions of Zirconium and Hafnium Imido ComplexesInorganic Chemistry
Publication VersionPublished Version
AbstractThe zirconium and hafnium imido metalloporphyrin complexes (TTP)MNAriPr (TTP = meso-5,10,15,20-tetra-p-tolylporphyrinato dianion; M = Zr (1), Hf; AriPr = 2,6-diisopropylphenyl) were used to mediate addition reactions of carbonyl species and metathesis of nitroso compounds. The imido complexes react in a stepwise manner in the presence of 2 equiv of pinacolone to form the enediolate products (TTP)M[OC(tBu)CHC(tBu)(Me)O] (M = Zr (2), Hf (3)), with elimination of H2NAriPr. The bis(μ-oxo) complex [(TTP)ZrO]2 (4) is formed upon reaction of (TTP)ZrNAriPr with PhNO. Treatment of compound 4 with water or treatment of compound 2 with acetone produced the (μ-oxo)bis(μ-hydroxo)-bridged dimer [(TTP)Zr]2(μ-O)(μ-OH)2 (5). Compounds 2, 4, and 5 were structurally characterized by single-crystal X-ray diffraction.
Copyright OwnerAmerican Chemical Society
Citation InformationJoseph Lyndon Thorman, Ilia A. Guzei, Victor G. Young and L. Keith Woo. "Addition and Metathesis Reactions of Zirconium and Hafnium Imido Complexes" Inorganic Chemistry Vol. 39 Iss. 11 (2000) p. 2344 - 2351
Available at: http://works.bepress.com/l-woo/4/