Tools
ToolsReis, Dayane M., Westrup, Kátia Cristina M., Nunes, Giovana G., Barison, Andersson, Ribeiro, Ronny R., de Sá, Eduardo L., Hughes, David L. and Soares, Jaísa F. (2009) Vanadium-lithium alkoxides: Synthesis, structure, spectroscopic characterisation and accidental degradation of silicone grease. Journal of the Brazilian Chemical Society, 20 (4). pp. 613-626. ISSN 0103-5053
Full text not available from this repository. (Request a copy)Abstract
Two complexes containing both vanadium and lithium, [V6Li10O8(ONep)14{OSi(Me)2 (ONep)}2] (1) and [V(ONep)3(μ-ONep)2Li(thf)2] (2), Nep = neopentyl, Me = methyl and thf = tetrahydrofuran, have been isolated in high yield and characterised by a number of techniques including X-band electron paramagnetic resonance (EPR) and 29Si{1H} nuclear magnetic resonance (NMR) spectroscopies, magnetic susceptibility measurements and single crystal X-ray diffractometry. Despite the similar preparation conditions, the two products present remarkably distinctive structural features: complex 2 is a binuclear adduct of "V(ONep)4" and "Li(ONep)(thf)2", while 1 is a mixed-valence, 16-metal aggregate. The large molecular oxoalkoxide 1 also contains silanolate units, {OSi(Me2)(ONep)} -, produced by nucleophilic attack of neopentoxide groups on Si-O bonds of silicone grease accidentally dissolved in the reaction media. Both products have promising applications in organic and inorganic synthesis, including the preparation of uncommon V-Li and/or Si containing oxides.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | alkoxide,lithium,neopentoxide,silicone grease,vanadium(iv),chemistry(all) ,/dk/atira/pure/subjectarea/asjc/1600 |
| Faculty \ School: | Faculty of Science > School of Chemical Sciences and Pharmacy (former - to 2009) Faculty of Science > School of Chemistry |
| Related URLs: | |
| Depositing User: | Pure Connector |
| Date Deposited: | 23 Jun 2016 23:10 |
| Last Modified: | 06 Sep 2023 15:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/59542 |
| DOI: | 10.1590/S0103-50532009000400005 |
Actions (login required)
 |
View Item |