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An investigation of some reactions of aluminium hydroborate
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Shaw, David L. S. (1978) An investigation of some reactions of aluminium hydroborate. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b1750466~S15
Abstract
The reaction of aluminium hydroborate with alcohols and thiols is discussed, and this is extended to cover possible mechanisms for hydrolysis. The course of the reaction was found to be dependent on the structural type of alcohol or thiol used. Substitution of a thio alkyl group for hydroborate led to preparation of the type of compound RSA1(BH₄ )₂ (where R = methyl, ethyl, benzyl) and properties of these compounds are discussed. Using an exchange reaction of aluminium hydroborate with alkyl borates , corresponding compounds of the type RO Al(BH₄)₂ (R = methyl, ethyl) were prepared, and their properties ascertained.
The behaviour of aluminium hydroborate with triethyl and trimethyl borane is considered. This work suggests that there is an exchange between the terminal hydrogens of the hydroborate groups and the borane alkyl groups, resultingin B-a!kylated aluminiumhydroborates. B-alkylated hydroborates a real so believed to be formed from a novel reaction between triethyl a lane and tetraethyl diborane.
Some chemistryof the octahydrotriborate group linked to aluminium is also discussed. Starting from dimethyl aluminiumoctahydrotriborate an exchange reaction with excess aluminiumhydroborate yields aluminiumoctahydrotriborate bis hydroborate. The properties of both compounds are discussed, and the relevance of the latter to aluminium hydroborate decomposition is noted.
The practical work involved extensive use of vacuum line and inert atmosphere techniques, and infra-red and n.m.r.spectral details were very useful.
| Item Type: | Thesis (PhD) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Boranes, Silicon hydride, Inorganic polymers, Organometallic polymers, Hydroborate ion, Hydrolysis | ||||
| Official Date: | September 1978 | ||||
| Dates: |
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| Institution: | University of Warwick | ||||
| Theses Department: | Department of Chemistry | ||||
| Thesis Type: | PhD | ||||
| Publication Status: | Unpublished | ||||
| Supervisor(s)/Advisor: | Wallbridge, Malcolm | ||||
| Extent: | 160 leaves | ||||
| Language: | eng |
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