Solid phase
Official name
Vanadium(III) oxide
Secondary names
Vanadium trioxide; Divanadium trioxide; Vanadic oxide; Vanadium sesquioxide; oxo(oxovanadiooxy)vanadium; karelianite
CAS number
1314-34-7
Type
Family
covalent network solid
Class
tridimentional covalent network solid
Compound type
oxide
Chemical composition
Formula
$V_2O_3$
Chemical formula
V2O3
Elemental formula
V2 O3
Isotope mixture type
terrestrial abundance
10.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$V$ Vanadium element 2 0.4 1 constituent cation main
$O$ Oxygen element 3 0.6 1 constituent anion main
Chemical bonds
  Bond Number
$V-O$ 6
Class
tridimensional covalent networks (11)
Type
one metal and one non-metal (or metalloid) tridimensional networks (11.04)
Equivalent mineral
Karelianite
Phase type
crystalline
Crystal system
trigonal
Crystal class
ditrigonal-scalenohedral
Crystal class symbol
-3m (D3d)
Crystal spacegroup
R-3c
Molar mass
149.881 $g/mol$
Density
4.87 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid V2O3 1940°C (2210 K)
Refringence type
uniaxial
Refringence sign
unknown
Refraction index $n_{\alpha}$
2.36 - 2.38
Pure color
black
Color
black
Diaphaneity
opaque
Luster
metallic
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