Fluorine-19 Nuclear Magnetic Resonance
Abstract:
Several series of diadducts of titanium tetrafluoride were studied with high resolution fluorine-19 nuclear magnetic resonance spectroscopy. These consisted of studies with aromatic amine oxides, amides and sulfoxides as bases. Mixed diadducts of TiF4 with the aromatic amine oxides and tetramethylurea as a reference base were also investigated. Both basicity and steric interactions were found to affect the 19F chemical shifts. Some aromatic amine oxide, amide and sulfoxide adducts with tin tetrafluoride were also investigated. Cis and trans isomers were found for all complexes in which the donor molecule was small. Only second order spectra were found for SnF42D complexes formed with the relatively strong bases.