Search results for "Triphenylborane"
showing 5 items of 5 documents
CCDC 156982: Experimental Crystal Structure Determination
2002
Related Article: S.Kiviniemi, M.Nissinen, T.Alaviuhkola, K.Rissanen, J.Pursiainen|2001|J.Chem.Soc.,Perkin Trans.2||2364|doi:10.1039/b100775k
CCDC 156979: Experimental Crystal Structure Determination
2002
Related Article: S.Kiviniemi, M.Nissinen, T.Alaviuhkola, K.Rissanen, J.Pursiainen|2001|J.Chem.Soc.,Perkin Trans.2||2364|doi:10.1039/b100775k
CCDC 156980: Experimental Crystal Structure Determination
2002
Related Article: S.Kiviniemi, M.Nissinen, T.Alaviuhkola, K.Rissanen, J.Pursiainen|2001|J.Chem.Soc.,Perkin Trans.2||2364|doi:10.1039/b100775k
Alkyl Complexes of Rare-Earth Metals That Contain a Furyl-Functionalized Cyclopentadienyl Ligand: Alkyl Cation Formation and Unexpected Ring-Opening…
2003
Rare-earth metal complexes of the type [Ln{η5:η1-C5Me4SiMe2(C4H3O-2)}(CH2SiMe3)2(THF)] (Ln = Y, Lu) were prepared by σ-bond metathesis of [Ln(CH2SiMe3)3(THF)2] with the 2-furyl-functionalized tetramethylcyclopentadiene (C5Me4H)SiMe2(C4H3O-2) and isolated as colorless crystals. Single-crystal X-ray structure analysis of the lutetium complex confirmed the coordination of the furyl group and THF to give a molecule of trigonal bipyramidal geometry with the oxygen donor atoms in the apical positions. The lability of the oxygen donor atoms results in fluxional behavior. Reaction with triphenylborane in THF gave thermally robust mono(alkyl) cations [Ln{η5:η1-C5Me4SiMe2(C4H3O-2)}(CH2SiMe3)(THF)n]+.…
The complexation of tetraphenylborate with organic N-heteroaromatic cations
2001
Complexation studies of eleven N-heteroaromatic cations with tetraphenylborate are reported. Tetraphenylborate forms complexes with five cations and reacts to form Lewis-base boranes with six cations. The complexes and the displacement reaction products were characterised by 1H NMR spectroscopy, elemental analysis and crystallographic methods. In the complexes C–H⋯π or N–H⋯π hydrogen bonds are the principal intermolecular interactions. The stability constants for the complexes are determined by 1H NMR titration in acetonitrile–methanol (1 ∶ 1) solution. Crystal structures of four of the complexes and three of the Lewis-base triphenylborane products are reported.