Boron monofluoride

Boron monofluoride

Names
Other names Boron fluoride Boron(I) fluoride Fluoroboronene Fluoroborylene
Identifiers
CAS Number	13768-60-0 Y
3D model (JSmol)	Interactive image Interactive image Interactive image
ChemSpider	4891729 Y
ECHA InfoCard	100.033.970
EC Number	237-383-0
PubChem CID	6336604
UNII	N01K2O1ZJH Y
CompTox Dashboard (EPA)	DTXSID501317099
InChI InChI=1S/BF/c1-2 Y Key: YFSQMOVEGCCDJL-UHFFFAOYSA-N Y
SMILES [BH0]F [B-]=[F+] [B-2]#[F+2]
Properties
Chemical formula	BF
Molar mass	29.81 g·mol−1
Thermochemistry
Std molar entropy (S⦵298)	200.48 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	115.90 kJ mol−1
Related compounds
Related isoelectronic compounds	Carbon monoxide, dinitrogen, nitrosonium, cyanide, acetylide
Related compounds	aluminium monofluoride aluminium monochloride aluminium monoiodide gallium monofluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Boron monofluoride or fluoroborylene is a chemical compound with the formula BF, one atom of boron and one of fluorine. It is an unstable gas, but it is a stable ligand on transition metals, in the same way as carbon monoxide. It is a subhalide, containing fewer than the normal number of fluorine atoms, compared with boron trifluoride. It can also be called a borylene, as it contains boron with two unshared electrons. BF is isoelectronic with carbon monoxide and dinitrogen; each molecule has 14 electrons.^[1]