Names | |
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Other names
niobium(II) oxide
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.031.631 |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
NbO | |
Molar mass | 108.905 g/mol[1] |
Appearance | grey solid[1] |
Odor | odorless |
Density | 7.30 g/cm3[1] |
Melting point | 1,937 °C (3,519 °F; 2,210 K)[1] |
Solubility | slightly soluble in HCl insoluble in nitric acid |
Structure[2] | |
Cubic, cP6 | |
Pm3m, No. 221 | |
a = 0.4211 nm
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Formula units (Z)
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3 |
Thermochemistry[3] | |
Heat capacity (C)
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41.3 J/(mol·K) |
Std molar
entropy (S⦵298) |
48.1 J/(mol·K) |
Std enthalpy of
formation (ΔfH⦵298) |
= -405.85 kJ/mol |
Gibbs free energy (ΔfG⦵)
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-378.6 kJ/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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Niobium monoxide is the inorganic compound with the formula NbO. It is a grey solid with metallic conductivity.[1]