0000000000611212

AUTHOR

Terhi Alaviuhkola

showing 2 related works from this author

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.

chemistry.chemical_compoundTetraphenylborateChemistryHydrogen bondInorganic chemistryPolymer chemistryIntermolecular forceProton NMRBoranesTitrationCrystal structureTriphenylboraneJournal of the Chemical Society, Perkin Transactions 2
researchProduct

Synthesis, characterization, and complexation of tetraarylborates with aromatic cations and their use in chemical sensors.

2005

Five aromatic borate anions, namely tetrakis(4-phenoxyphenyl)borate (1), tetrakis(biphenyl)borate (2), tetrakis(2-naphthyl)borate (3), tetrakis(4-phenylphenol)borate (4), and tetrakis(4-phenoxy)borate (5), have been prepared and tested as ion-recognition sites in chemical sensors for certain aromatic cations and metal ions. To gain further insight into the complexation of the cations, some complexes have been prepared and structurally characterized. The complexation behavior of 1 and 2 towards N-methylpyridinium (6), 1-ethyl-4-(methoxycarbonyl)pyridinium (7), tropylium (8), imidazolium (9), and 1-methylimidazolium (10) cations has been studied, and the stability constants of the complexes o…

chemistry.chemical_classificationBiphenylModels MolecularTetraphenylborateMolecular StructureMetal ions in aqueous solutionOrganic ChemistryInorganic chemistrychemistry.chemical_elementGeneral ChemistryCrystal structureCrystallography X-RayMedicinal chemistryHydrocarbons AromaticCatalysisIon selective electrodechemistry.chemical_compoundchemistryCationsBoratesNon-covalent interactionsPyridiniumBoronElectrodesChemistry (Weinheim an der Bergstrasse, Germany)
researchProduct