Steric engineering of C–F activation with lanthanoid formamidinates
作者:Marcus L. Cole、Glen B. Deacon、Peter C. Junk、Kristina Konstas
DOI:10.1039/b419047e
日期:——
Reaction of lanthanum with Hg(C6F5)2 and bulky N,Nâ²-bis(2,6-diisopropylphenyl)formamidine (HDippForm) in tetrahydrofuran gives [LaFDippForm}2(THF)] with a rare terminal LnâF bond, and a high yield of a novel functionalised formamidine, DippForm((CH2)4OC6F4H-o).
The crystal and molecular structure of bis(2,3,4,5-tetrafluorophenyl)mercury
作者:D.S. Brown、A.G. Massey、D.A. Wickens
DOI:10.1016/s0022-328x(00)86660-7
日期:1980.7
During studies on the preparation of perfluoro-o-phenylenemercury, bis- (2,3,4,5-tetrafluorophenyl) mercury was isolated as a by-product and characterised by spectroscopic and X-ray techniques.
Steric Modulation of Coordination Number and Reactivity in the Synthesis of Lanthanoid(III) Formamidinates
作者:Marcus L. Cole、Glen B. Deacon、Craig M. Forsyth、Peter C. Junk、Kristina Konstas、Jun Wang
DOI:10.1002/chem.200700963
日期:2007.10.5
Reactions of a range of the readily prepared and sterically tunable N,N'-bis(aryl)formamidines with lanthanoidmetals and bis(pentafluorophenyl)mercury (Hg(C6F5)2) in THF have given an extensive series of tris(formamidinato)lanthanoid(III) complexes, [Ln(Form)3(thf)n], namely [La(o-TolForm)3(thf)2], [Er(o-TolForm)3(thf)], [La(XylForm)3(thf)], [Sm(XylForm)3], [Ln(MesForm)3] (Ln=La, Nd, Sm and Yb), [Ln(EtForm)3]
Formation of Tetrafluorobenzyne by β-Fluoride Elimination in Zirconium-Perfluorophenyl Complexes
作者:Bradley M. Kraft、Rene J. Lachicotte、William D. Jones
DOI:10.1021/om010888f
日期:2002.2.1
Cp*2ZrH2 (CP* = pentamethylcyclopentadienyl) and Hg(C6F5)(2) react in pentane to form Cp*Zr-2(C6F5)H in high yield at room temperature. Cp*Zr-2(C6F5)H reacts intramolecularly at 120 degreesC under an atmosphere of H-2 to give Cp*Zr-2(o-C6F4H)F quantitatively by beta-fluoride elimination and subsequent insertion of tetrafluorobenzyne into the Zr-H bond. Under vacuum, CP*Zr-2(C6F5)H decomposes into a mixture of CP*Zr-2(o-C6F4H)F and the ring methyl C-H activated product, Cp*(Fv)Zr(C6F5) (Fv = tetramethylfulvene). Upon further heating, Cp*(Fv)Zr(C6F5) reacts to form the novel complex Cp*(C5Me4CH2(C6F4))ZrF, formed by beta-fluoride elimination and subsequent insertion of tetrafluorobenzyne into the Zr-CH2 bond.