Boron monoxide

Names
IUPAC name

oxoboron

Identifiers

CAS Number

* 12505-77-0 Y

3D model (JSmol)

* Interactive image
* Interactive image
* Interactive image

ChEBI |

* CHEBI:30162

ChemSpider |

* 4885722

PubChem CID

* 6327189

UNII |

* 0IDJ8AZ8DG Y

InChI

* InChI=1S/BO/c1-2

Key: MOWNZPNSYMGTMD-UHFFFAOYSA-N

SMILES

* O=BB=O

* [B]=O

* O1B2B1O2

Properties

Chemical formula

| BO
Molar mass | 26.81 g/mol
Appearance  | white powder

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Y verify (what is YN ?)

Infobox references

Chemical compound

For the functional group, see oxoborane.

Boron monoxide (BO) is a binary compound of boron and oxygen. It has a molar mass of 26.81 g/mol. The material was first reported in 1940,[1] with a modified synthetic procedure published in 1955,[2] however, the material's structure had remained unknown for nearly a century. A number of allotropes of BO have been theorized ranging from molecular species, to 1D, 2D, and 3D-structured materials,[3][4][5] but these were difficult to differentiate using common structural characterization methods. Recent work suggests that the material forms 2D nanosheets composed of O-bridged B4O2 rings, a structure initially postulated in 1961.[6][7] Due to the lack of precise structural information on the identity of the compound, it has not found widespread use in industry.

## Synthesis

[edit]

Boron monoxide is typically produced through the condensation of tetrahydroxydiboron (chemical formula; B2(OH)4) at temperatures of 200–500°C.[2] The use of higher temperatures (700°C) leads to the formation of hard B2O3 glasses. These glasses generally have a dark appearance, from the dissolved elemental boron, and are also produced directly through the dissolution of B into B2O3.[1]

BO has been used in the synthesis of B2Cl4,[6] which served as the only evidence, until 2010,[3] of the preservation of the B–B bond present in the precursor compound.

## See also

[edit]

* Boron suboxide
* Boron trioxide
* Boron

## References

[edit]

1. ^ a b Zintl, E.; Morawietz, W.; Gastinger, E. (1940-10-03). "Bormonoxyd". Zeitschrift für anorganische und allgemeine Chemie (in German). 245 (1): 8–11\. doi:10.1002/zaac.19402450102. ISSN 0863-1786.
2. ^ a b Wartik, Thomas; Apple, Eugene F. (1955-12-01). "A New Modification of Boron Monoxide". Journal of the American Chemical Society. 77 (23): 6400–6401\. Bibcode:1955JAChS..77.6400W. doi:10.1021/ja01628a116. ISSN 0002-7863.
3. ^ a b Claeyssens, Frederik; Allan, Neil L.; Norman, Nicholas C.; Russell, Christopher A. (2010-09-30). "Design of three-dimensional solid-state boron oxide networks: Ab initio calculations using density functional theory". Physical Review B. 82 (9): 094119. Bibcode:2010PhRvB..82i4119C. doi:10.1103/PhysRevB.82.094119.
4. ^ Li, Da-Zhi; Bai, Hui; Chen, Qiang; Lu, Haigang; Zhai, Hua-Jin; Li, Si-Dian (2013-06-28). "Perfectly planar boronyl boroxine D3h B6O6: A boron oxide analog of boroxine and benzene". The Journal of Chemical Physics. 138 (24): 244304. Bibcode:2013JChPh.138x4304L. doi:10.1063/1.4811330. ISSN 0021-9606.
5. ^ Liu, Y.; Liu, C.; Pu, L.; Zhang, Z.; King, R. B. (2017-03-14). "Boron monoxide dimer as a building block for boroxine based buckyballs and related cages: a theoretical study". Chemical Communications. 53 (22): 3239–3241\. doi:10.1039/C6CC09489A. ISSN 1364-548X. PMID 28256640.
6. ^ a b 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\. Bibcode:1961JAChS..83.4750M. doi:10.1021/ja01484a015. ISSN 0002-7863.
7. ^ Perras, Frédéric A. (June 28, 2023). "The Structure of Boron Monoxide". J. Am. Chem. Soc. 145 (27): 14660–14669\. Bibcode:2023JAChS.14514660P. doi:10.1021/jacs.3c02070. OSTI 1992674 – via ACS Publications.

* v
* t
* e

Boron compounds

Boron pnictogenides|

* BAs
* BN
* BP

Boron halides|

* BBr3
* BCl3
* BF
* BFO
* BF3
* BI3
* B2F4
* B2Cl4

Acids|

* B(NO3)3
* B(OH)3
* BPO4
* B2(OH)4
* BH3O

Boranes|

* BH3
* B2H4
* B2H6
* BH3NH3
* B4H10
* B5H9
* B5H11
* B6H10
* B6H12
* B10H14
* B18H22
* [B12H12]2-

Boron oxides and sulfides|

* BO
* B2O3
* B2S3
* B6O

Carbides|

* B4C

Organoboron compounds|

* (BH2Me)2
* BMe3
* BEt3
* Ac4(BO3)2
* COBH3

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