670239-91-5Relevant academic research and scientific papers
Crystal structures and solution dynamics of monocyclopentadienyl titanium(IV) complexes bearing pendant ether and phosphanyl type functionalities
Krut'Ko, Dmitrii P.,Borzov, Maxim V.,Veksler, Eduard N.,Churakov, Andrei V.,Mach, Karel
, p. 2885 - 2894 (2003)
Two novel half-sandwich Ti(IV) complexes, [η5:η 1-O-C5(CH3)4CH2CH 2OCH3]TiCl3 (3) and (η5:η 1-P-C5H4CH2CH2PPh 2)TiCl3 (6), were prepared and structurally characterised. At elevated temperatures, complex 3 undergoes a conversion into [η 5:σ-C5(CH3)4CH 2CH2O-]TiCl2 (4). The dynamic behaviour of complexes 3 and 6 in solutions has been studied by variable-temperature 1H, 13C and 31P NMR spectroscopy. Thermodynamic parameters of the intramolecular dissociation-coordination processes for 3 and 6 were elucidated by the numerical analysis of the δ (T) dependencies. The intramolecular M(IV) ← E (M = Ti, Zr; E = O, P) coordination in half-sandwich cyclopentadienyl complexes is discussed.
