Solid phase
Official name
Neodymium(III) oxide
Secondary names
Neodymium oxide; Neodymium sesquioxide; Neodymium trioxide; Dineodymium trioxide; Nd2O3
CAS number
1313-97-9
Type
Family
ionic solid
Class
alkali salt
Compound type
oxide
Chemical composition
Formula
$Nd{3+}_2 \cdot O^{2-}_3$
Chemical formula
Nd2O3
Elemental formula
(Nd3+)2 (O2-)3
Isotope mixture type
terrestrial abundance
10.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Nd^{3+}$ Neodymium cation element 2 0.4 1 constituent cation main
$O^{2-}$ Oxide anion element 3 0.6 1 constituent anion main
Chemical bonds
  Bond Number
$\cdot (\cdot) Nd^{3+} \cdot O^{2-} \cdot$
Class
alkali salts (06)
Type
simple alkali salts (06.01)
Polymorphs
Phase type
crystalline
Crystal system
various
Molar mass
336.48 $g/mol$
Density
6.40 - 7.24 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 2506 K (2233°C)
solid-solid A-Nd2O3 (trigonal) <-> X-Nd2O3 (cubic) at ?? K
Refringence type
various
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