Schwan, Karl-Christian and Adolf, Ariane and Thoms, Christine and Zabel, Manfred and Timoshkin, Alexey Y. and Scheer, Manfred (2008) Selective halogenation at the pnictogen atom in Lewis-acid/base-stabilised phosphanylboranes and arsanylboranes. DALTON TRANSACTIONS (37). pp. 5054-5058. ISSN 1477-9226, 1477-9234
Full text not available from this repository. (Request a copy)Abstract
The halogenation of Lewis-acid/base-stabilised phosphanylboranes (1a) and arsanylboranes (1b) with CX4 (X = Cl, Br) leads selectively to the substitution of both protons at the pentel atom and the new compounds [(CO)(5)W(X2PBH2 center dot NMe3)] (2a: X = Cl, 2b: X = Br) and [(CO) W-5(X2AsBH2 center dot NMe3)] (3a: X = Cl, 3b: X = Br), respectively, are obtained. The new products were comprehensively characterised by spectroscopic methods and by X-ray crystallography. While compounds 2a and 2b show an antiperiplanar arrangement of the Lewis acid (W(CO)(5)) and the Lewis base (NMe3) in the solid state, a synclinal arrangement in 3a and 3b, respectively, was observed. Computational calculations of the optimised antiperiplanar and synclinal geometries of the compounds 2 and 3 in the gas phase slightly favour the antiperiplanar arrangement of the Lewis acid and the Lewis base for both compounds.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COMPLEXES; BONDS; ACTIVATION; DENSITY; BORANES; |
| 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: | 13 Nov 2020 10:06 |
| Last Modified: | 13 Nov 2020 10:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31614 |
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