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Properties of substance:

niobium(IV) oxide

Group of substances:

inorganic

Physical appearance:

black tetragonal crystals

Empirical formula (Hill's system for organic substances):

NbO2

Structural formula as text:

NbO2

Molar/atomic mass: 124.905

Melting point (°C):

2080

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

795.4 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

54.5 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

57.5 (s)

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 174-175 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru