Stepwise substitution of N,N-di-iso-propylcarbamato groups of Ti(O2CN-i-Pr2)4 by triphenylsilanol leading from eight- to six- and four-co-ordinated titanium(IV)

Belli, Daniela; Calderazzo, Fausto; Ianelli, S.; Labella, Luca; Marchetti, Fabio; Pelizzi, G.

doi:10.1039/b005114o

Carbamato displacement from the hydrocarbon soluble N,N-diisopropylcarbamato derivative Ti((O2CNPr2)-Pr-i)(4), 1, by triphenylsilanol led to the bis(silanolato)bis(carbamato) complex Ti((O2CNPr2)-Pr-i)(2)(OSiPh3)(2), 2. X-Ray diffraction showed the mononuclear compound 1 to contain eight-co-ordinated titanium with slightly asymmetric bidentate carbamato groups in a distorted dodecahedral geometry. Titanium is six-co-ordinated in 2 to six oxygen atoms belonging to two bidentate carbamato groups and to two cis-arranged silanolato ligands in a distorted octahedral geometry. Exhaustive carbamato displacement from titanium, carried out with a silanol:titanium molar ratio >4:1, afforded the mononuclear tetrasilanolato complex Ti(OSiPh3)(4), 3, containing a tetrahedral titanium centre.

Autori interni:	BELLI, DANIELA CALDERAZZO, FAUSTO S. IANELLI LABELLA, LUCA MARCHETTI, FABIO G. PELIZZI mostra contributor esterni nascondi contributor esterni
Autori:	D. BELLI DELL' AMICO; CALDERAZZO F; S. IANELLI; L. LABELLA; F. MARCHETTI; G. PELIZZI
Titolo:	Stepwise substitution of N,N-di-iso-propylcarbamato groups of Ti(O2CN-i-Pr2)4 by triphenylsilanol leading from eight- to six- and four-co-ordinated titanium(IV)
Anno del prodotto:	2000
Digital Object Identifier (DOI):	10.1039/b005114o
Appare nelle tipologie:	1.1 Articolo in rivista

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http://hdl.handle.net/11568/205385

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