Constituent
Name
CO ice
Official name
alpha Carbon Monoxide
Family
molecular solid
Class
polar molecular solid
Compound type
inorganic molecular solid
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0
Mole fraction
1.0 $\pm$ 3e-05
Chemical composition
Formula
$\alpha-CO$
Chemical formula
CO
Elemental formula
C O
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$CO$ Carbon monoxide molecule 1 1.0 1 pure main
Chemical bonds
  Bond Number Relevance
$C^-\equiv O^+$ 1 main
Class
molecular solids with polar molecules (02)
Type
with polyatomic inorganic polar molecules (02.02)
Phase name
$\alpha-CO$
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
tetartoidal
Crystal class symbol
23 (T)
Crystal spacegroup
P2(1)3
Crystal molecule sites
Label Type Nb Species Species coordinence Species occupancy Species order
S6 main 4  $CO$ 1.0 fixed position
Comments
order-disorder phase transition around 30-35K (head-to-tail reorientation of CO)
Texture
polycrystalline
Molar mass
28.01014082 $g/mol$
Density
1.0394 @14K to 0.983 @62.5K $g/cm^3$
Refringence type
isotropic
Diaphaneity
transparent
Luster
vitreous