Tetraacetyl diborate
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| Names | |
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| IUPAC name
[acetyloxy(diacetyloxyboranyloxy)boranyl] acetate
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Other names
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C8H12B2O9 | |
| Molar mass | 273.80 g·mol−1 |
| Appearance | Colorless needles |
| Melting point | 147 °C (297 °F; 420 K) |
| Solubility | Soluble in most organic solvents |
| Hazards | |
| Flash point | Not flammable |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tetraacetyl diborate is an organoboron compound with the molecular formula (CH3COO)2BOB(CH3COO)2.
Preparation
[edit]It is not well known and was discovered accidentally by an attempt trying to make boron triacetate in the 1950s. It was made by reacting boric acid and acetic anhydride around 75 °C (167 °F) under nitrogen which created tetraacetyl diborate and acetic acid. It crystallized as a colorless solid.[1]
- 2H3BO3 + 5(CH3CO)2O → (CH3COO)2BOB(CH3COO)2 + 6CH3COOH
Reactions
[edit]Tetraacetyl diborate reacts with methanol to form water and diacetyl methoxyboron.[1]
References
[edit]- ^ a b c R. G. Hayter; A. W. Laubengayer; P. G. Thompson (1957). "Tetraacetyl Diborate and So-Called "Boron Acetate"". Journal of the American Chemical Society. 79 (15): 4243–4244. doi:10.1021/ja01572a075.
- ^ "Tetraacetyl diborate". PubChem. Retrieved 18 February 2021.