Boron monoxide

Boron monoxide (B2O) is a chemical compound of boron and oxygen. It has a molar mass of 37.621 grams per 1 mole. Two experimental studies have proposed the existence of diamond-like[1] and graphite-like[2] B2O, as for boron nitride and carbon solids. However, a later, systematic, experimental study of the boron oxide phase diagram suggests that B2O is unstable.[3] The instability of the graphite-like B2O phase was also predicted theoretically.[4]

"B2O" redirects here. For the online journal, see Boundary 2.
Not to be confused with B20 (disambiguation).
Boron monoxide
Names
IUPAC name
Boron(I) oxide
Other names
diboron monoxide
Identifiers
3D model (JSmol)
  • InChI=1S/B2O/c1-3-2
    Key: OOTZEVIJRZYQDW-UHFFFAOYSA-N
  • [B]O[B]
Properties
B2O
Molar mass 37.621 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Synthesis

The synthesis of Boron monoxide can come from diboron-containing compounds like Tetrahydroxydiboron (chemical formula; B2(OH)4) via dehydration methods.[5]

Structure/Hybridization/Geometry

The oxygen within Boron monoxide is sp3 hybridized given that there are 4 electronic groups surrounding it: 2 Boron-Oxygen covalent bonds and 2 lone pairs. Each molecule of boron monoxide has a "bent" shape due to the bonding and lone pair interactions.

Medicinal Applications

Although there is no current usage of Boron monoxide in current medicinal applications, it may or may not be an intermediate in different boron-containing reactions that eventually make different drugs. Some of these boron-containing drugs are used for many different areas of medicine from cancer therapeutics to medicinal nanotechnology[6]

See also

References
  1. Endo, T.; Sato, T.; Shimada, M. (1987). "High-pressure synthesis of B2O with diamond-like structure". Journal of Materials Science Letters. 6 (6): 683. doi:10.1007/BF01770925. S2CID 137691715.
  2. Hall, H. T.; Compton, L. A. (1965). "Group IV Analogs and High Pressure, High Temperature Synthesis of B2O" (PDF). Inorganic Chemistry. 4 (8): 1213. doi:10.1021/ic50030a027.
  3. Solozhenko, V. L.; Kurakevych, O. O.; Turkevich, V. Z.; Turkevich, D. V. (2008). "Phase Diagram of the B−B2O3 System at 5 GPa: Experimental and Theoretical Studies". Journal of Physical Chemistry B. 112 (21): 6683–7. doi:10.1021/jp800625s. PMID 18457447.
  4. Grumbach, M.; Sankey, O.; McMillan, P. (1995). "Properties of B2O: An unsymmetrical analog of carbon". Physical Review B. 52 (22): 15807–15811. Bibcode:1995PhRvB..5215807G. doi:10.1103/PhysRevB.52.15807. PMID 9980955.
  5. McCloskey, A. L.; Brotherton, R. J.; Boone, J. L. (December 1961). "The Preparation of Boron Monoxide and its Conversion to Diboron Tetrachloride1". Journal of the American Chemical Society. 83 (23): 4750–4754. doi:10.1021/ja01484a015. ISSN 0002-7863.
  6. Ali F, S Hosmane N, Zhu Y. Boron Chemistry for Medical Applications. Molecules. 2020 Feb 13;25(4):828. doi: 10.3390/molecules25040828. PMID: 32070043; PMCID: PMC7071021.


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