Group IV phosphinimide amide complexes
| Autor: | Pingrong Wei, Douglas W. Stephan, Emily Hollink |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Canadian Journal of Chemistry. 82:1634-1639 |
| ISSN: | 1480-3291 0008-4042 |
| DOI: | 10.1139/v04-141 |
| Popis: | Complexes of formula TiCp(NPR3)(NMe2)2 (R = t-Bu 1, Ph 2) were prepared via salt metathesis of TiCp(NPR3)Cl2 with a slight excess of LiNMe2. The species Ti(NP-t-Bu3)(NMe2)3 (3) was obtained as a by-product. The related derivative ZrCp(NP-t-Bu3)(NMe2)2 (4) was also prepared. Reaction of TiCp(NP-t-Bu3)Cl2 with LiNHC6H3(2,6-i-Pr2) afforded TiCp(NP-t-Bu3)(NHC6H3(2,6-i-Pr2))Cl (5) and Ti(NP-t-Bu3)(NHC6H3(2,6-i-Pr2))3 (6). In a similar manner, the Zr analogs ZrCp(NP-t-Bu3)(NHC6H3(2,6-i-Pr2))Me (7) and ZrCp(NP-t-Bu3)(NHC6H3(2,6-i-Pr2))2 (8) were also prepared. X-ray structural data for compounds 5, 6, and 8 are reported. Reactivity of these phosphinimideamide derivatives was explored. While these species do not yield imide derivatives upon thermolysis, reaction of 5 with excess AlMe3 afforded TiCp(NP-t-Bu3)Me2 while reaction with 1 equiv. of AlMe3 gave TiCp(NP-t-Bu3)MeCl (9) and Al2(m-NHC6H3(2,6-i-Pr2))2Me4 (10). Key words: titanium, zirconium, phosphinimide, amide, ligand metathesis. |
| Databáze: | OpenAIRE |
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