10.1021/om040058c.s001
Virginie Comte
Virginie
Comte
Pierre Le Gendre
Pierre Le
Gendre
Philippe Richard
Philippe
Richard
Claude Moïse
Claude
Moïse
[TiPHOS(Rh)]<sup>+</sup>: A Fortuitous Coordination Mode and an
Effective Hydrosilylation Bimetallic Catalyst
American Chemical Society
2005
rhodium center
C 5
chloride atoms
NMR studies
TiPHOS ligand
TiCl 2
Effective Hydrosilylation Bimetallic Catalyst
Fortuitous Coordination Mode
2005-03-28 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/_TiPHOS_Rh_sup_sup_A_Fortuitous_Coordination_Mode_and_an_Effective_Hydrosilylation_Bimetallic_Catalyst/3294217
The reaction of the titanocene diphosphine {(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)[η<sup>5</sup>-C<sub>5</sub>Me<sub>3</sub>-1,2-(PPh<sub>2</sub>)<sub>2</sub>]TiCl<sub>2</sub>} (TiPHOS;
<b>1</b>) with [Rh(COD)<sub>2</sub>](OTf) led to the new early−late heterobimetallic complex [(TiPHOS)Rh(COD)](OTf) (<b>2</b>), whose structure has been determined by X-ray diffraction analysis and by
dynamic NMR studies. A weak bonding interaction between one of the two chloride atoms
of the TiPHOS ligand and the rhodium center has been observed. The bimetallic complex <b>2</b>
has been tested in parallel with the monometallic complex [(<i>o</i>-dppbe)Rh(COD)](OTf) (<b>3</b>) and
has proved to be a very effective catalyst for the hydrosilylation of aromatic ketones.