Abstract
The complex formation of TiF4 with the phosphorylated ketone Ph2P(O)CH(Me)CH2C(O)Et (L), containing an asymmetric carbon atom in the aliphatic hydrocarbon group and representing a racemic mixture of enantiomers, was studied by 19F{1H} and 31P{1H} NMR spectroscopy. The composition of complexes formed in the solution was determined; analysis of the 19F NMR spectra resorting to the heterotropicity concept was used to assign the resonance lines to two chiral optically active racemic and meso-stereoisomers of cis-TiF4L2. The configurations of enantiomers of the monodentate ligand coexisting in the coordination sphere were found to have a crucial effect on the axial fluorine atoms of mixed octahedral cis-tetrafluoro d0 transition metal complexes. A new efficient method was developed for the synthesis of ligand L.
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