Titanium tetrafluoride complexation with phosphorylated ketone Ph2P(O)(CH2)2C(O)Me in CH2Cl2статьяИсследовательская статья
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Аннотация:The products resulting from the reaction of TiF4 with Ph2P(O)(CH2)2C(O)Me (L') in CH2Cl2 have
been studied by 19F{1H} and 31P{1H} NMR spectroscopy. At a twofold excess of L', solution contains cis-
TiF4(L')2 (>90%), trans-TiF4(L')2, and fac-[TiF3L ]+, where L' is coordinated via the P=O group, as well as
the dimer [(Ti2F7 )2]+, where L' is coordinated through the P=O and C=O groups. An equimolar solution
contains dimeric and polynuclear complexes containing moieties with three terminal cis fluorine ions, while the
other coordination sites are occupied by the P=O groups and F– bridges. At a twofold excess of TiF4, ligand L'
coordinates via the P=O and C=O groups and behaves as a bridge along with F– ions. Thermodynamic stability
of the structures of the TiF4 isomers and the structure of [(μ-F)(μ- )2(TiF3)2]+ has been calculated