Titanoxycarbene complexes of Ti(IV) with O- and N-donor ligands
dc.contributor.author | Nogai S.D. | |
dc.contributor.author | Schuster O. | |
dc.contributor.author | Bruce J. | |
dc.contributor.author | Raubenheimer H.G. | |
dc.date.accessioned | 2011-05-15T16:05:15Z | |
dc.date.available | 2011-05-15T16:05:15Z | |
dc.date.issued | 2008 | |
dc.description.abstract | Heterobimetallic complexes of the general formula [{(OC) 5M=C(Me)OTi(OiPr)2}(μ-OiPr)]2 with M = Cr (1), W (2) were synthesized by reacting (OC)5M=C(Me)OLi (M = Cr, W) with ClTi(OiPr)3. X-Ray crystallography revealed dimeric molecular structures based on four-membered Ti2O2-rings for both compounds. Most intriguingly crystals of 1 virtually "shattered" upon cooling below -60°C. Treatment of 1 and 2 with an excess of pyridine did not effect symmetric cleavage of the dimers, but afforded the unique rearrangement products [(OC)5M=C(Me)O]2Ti(OiPr)2(C 5H5N)2 with M = Cr (3) and W (4). The isomorphous structures, determined by means of X-ray diffraction, are only the second examples of an unrestrained titanium center coordinated by four OR and two N-donor ligands. Complexes 3 and 4 were also accessible from Cl 2Ti(OiPr)2(C5H5N)2 (5) and (OC)5M=C(Me)OLi. Owing to the inherent dynamic behaviour of all complexes, low-temperature NMR studies were undertaken. The formation of nanoparticles upon thermolysis of complex 2 lends support to the notion that the presented (or related) compounds could be useful as single source precursors for nano-sized mixed metal oxides or oxo nitrides. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. | |
dc.description.version | Article | |
dc.identifier.citation | New Journal of Chemistry | |
dc.identifier.citation | 32 | |
dc.identifier.citation | 3 | |
dc.identifier.issn | 11440546 | |
dc.identifier.other | 10.1039/b715075j | |
dc.identifier.uri | http://hdl.handle.net/10019.1/13041 | |
dc.subject | titanium | |
dc.subject | titanoxycarbene | |
dc.subject | unclassified drug | |
dc.subject | article | |
dc.subject | carbon nuclear magnetic resonance | |
dc.subject | chemical reaction | |
dc.subject | chemical structure | |
dc.subject | priority journal | |
dc.subject | proton nuclear magnetic resonance | |
dc.subject | synthesis | |
dc.subject | X ray diffraction | |
dc.title | Titanoxycarbene complexes of Ti(IV) with O- and N-donor ligands | |
dc.type | Article |