Schwan, Karl-Christian and Vogel, Ulf and Adolf, Ariane and Zabel, M. and Scheer, Manfred (2009) Halogenation of Lewis acid/base stabilised phosphanylboranes. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 694 (7-8). pp. 1189-1194. ISSN 0022-328X, 1872-8561
Full text not available from this repository. (Request a copy)Abstract
The reaction pattern of the Lewis-acid/base stabilised phosphanylborane [(CO)(5)W(H2PBH2 center dot NMe3)] (1) with elemental halogens is comprehensively studied. The reaction with iodine and bromine leads to a selective halogenation at the tungstencarbonyl moiety under formation of [WX2(CO)(4)(H2PBH2 center dot NMe3)] (X = I (2), Br (3)). Whereas 2 is a stable product the brominated compound 3 dimerises easily to [WBr2(CO)(3)(H2PBH2 center dot NMe3)](2) (4) under lost of CO. The CO elimination reaction of 3 is extensively studied. If 3 is reacted with [Et4N][Br] the ionic compound [Et4N][WBr3(CO)(3)(H2PBH2 center dot NMe3)] (5) is formed. Otherwise, if 3 is combined with the donor ligand [H2PBH2 center dot NMe3], the complex [WBr2(CO)(3)(H2PBH2 center dot NMe3)(2)] (6) is obtained. Compounds 2-6 are comprehensively characterised by X-ray diffraction analysis, NMR, and IR spectroscopy. (C) 2008 Elsevier B. V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COORDINATION-NUMBER 7; CARBONYL-COMPLEXES; TUNGSTEN; BONDS; ARSANYLBORANES; MOLYBDENUM; Lewis-acid/base-stabilised phosphanylborane; Phosphorous; Boron; Halogenation; Iodine; Bromine |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Sep 2020 14:13 |
| Last Modified: | 18 Sep 2020 14:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/29188 |
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