Systematic name
Pentafluoroniobium
Other names, synonyms
Niobium(V) fluoride; Niobium(5+) pentafluoride; Columbium pentafluoride
Molecular formula and structural formula of Niobium pentafluoride:
F5Nb or NbF5
Mr = 187.8984 g/mol
Pentafluoroniobium
SMILES: F[Nb](F)(F)(F)F
Pure niobium pentafluoride exists as a white, highly hygroscopic solid. The highly refractive, colorless NbF5 molecules deliquesce slowly in air. In the gas phase, niobium pentafluoride exists as a monomer, and in the solid state as a ring-shaped tetramer; the crystal structure is monoclinic, space group C2/m No. 12.
Mass-related elemental composition and isotope proportions of the compound Niobium pentafluoride - F5Nb - calculated based on molecular mass.
*) The third column lists the atomic masses or isotope masses of the elements involved and - in square brackets - the natural isotope composition.
The molar mass is M = 187.898385815 grams per mole.
The amount of substance in one kilogram of the substance is n = 5.322 mol.
The amount of substance in one gram of the substance is n = 0.005 mol.
Monoisotopic mass: 187.898389015 Da - related to 19F593Nb.
(General information without guarantee of accuracy and completeness! The information does not replace the chemical safety data sheet or a risk assessment, but rather provides a general overview of the risk posed by the hazardous substance.
Signal word: Danger
GHS hazard statements (H phrases):
Labeling in the EU: See ECHA Substance Infocard 100.029.109.
The table below lists producers and suppliers of Niobium pentafluoride as a commercial chemical for laboratories, research, industry and production with the corresponding contact details.
Last update: 2026-01-27
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