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Taylor, S.A., 1982. Reactions of molybdenum and tungsten hydrazido (2-) complexes with alkenes. PhD, Nottingham Trent University.
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Abstract
The reactions between cyanoalkenes and dinitrogen derived hydrazido(2-) complexes of molybdenum and tungsten were investigated. Two types of reaction were observed, either the formation of vinyl-diazenido(1-) complexes or a reaction with loss of the hydrazido(2-) ligand and formation of nitrile-derived methyleneamino complexes. A single crystal-X-ray study has characterised the bromotricyanoprop-2-enylideneamino ligand. The kinetics and mechanism of the former reaction have been investigated.
Protonation of the vinyldiazenido(1-) complexes with HBF4 in thf produced vinylhydrazido(2-) complexes, which were reduced electrochemically via a four electron reduction to give aminocyanopyrazoles and the starting hydrazido(2-) complex. A cyclic process for the formation of aminocyanopyrazole is described.
The reaction between the hydrazido(2-) complex and alkenes activated by either palladium or mercury salts was investigated, and attempted intramolecular cyclisation reactions to form heterocyclic ring structures on the terminal nitrogen atom of alkenylhydrazido(2-) complexes are described. The reaction between the hydrazido(2-) complex and alkenes in strong acid solution was also briefly investigated.
| Item Type: | Thesis | ||||
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| Creators: | Taylor, S.A. | ||||
| Date: | 1982 | ||||
| ISBN: | 9781369315981 | ||||
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| Divisions: | Schools > School of Science and Technology | ||||
| Record created by: | Linda Sullivan | ||||
| Date Added: | 24 Sep 2020 13:37 | ||||
| Last Modified: | 16 Aug 2023 10:52 | ||||
| URI: | https://irep.ntu.ac.uk/id/eprint/40909 |
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