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- W2092019213 abstract "The crystal structures of the 2,4-pentanedionato (acetylacetonato, acac) and 2,2,6,6-tetramethylheptane-3,5-dionato (tmhd) compounds [{Ti(OR)3(dik)}2] (dik = acac, R = Me, Et, Pti; dik = tmhd, R = Me, Prn, Pri), obtained from reactions between Ti(OR)4 and one equivalent of dikH, have been determined for the first time. In the solid state, these compounds adopt centrosymmetric, alkoxide-bridged binuclear structures which in solution undergo ligand redistribution to give mixtures of [{Ti(OR)3(dik)}2], [Ti(OR)2 (dik)2] and Ti(OR)4. When R = Pri, the equilibrium favours the mononuclear compounds, whereas when R = Me, Et or Prn the binuclear compounds can be observed in the 1H NMR spectra. Variable-temperature 1H NMR spectra provide an insight into the dynamic behaviour of the methoxides [{Ti(OMe)3(dik)}2], and possible ligand exchange mechanisms are discussed. No conclusive evidence was obtained for the existence of dimeric or monomeric [Ti(OBui)3(dik)] in the solid state or in solution." @default.
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- W2092019213 date "1998-03-01" @default.
- W2092019213 modified "2023-09-23" @default.
- W2092019213 title "β-diketonate derivatives of titanium alkoxides: X-ray crystal structures and solution dynamics of the binuclear complexes [{Ti(OR)3(dik)}2]" @default.
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- W2092019213 doi "https://doi.org/10.1016/s0277-5387(97)00418-x" @default.
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