Solid phase
Official name
Cyanoacetylene
Secondary names
HC3N ice
Type
Family
molecular solid
Class
hydrogen bonded molecular solid
Compound type
nitrile
Chemical composition
Formula
$HC_3N$
Chemical formula
HC3N
Elemental formula
H C3 N
Isotope mixture type
terrestrial abundance
2.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$HC_3N$ Cyanoacetylene molecule 1 1.0 1 pure main
Chemical functions
  Function Number
$R\equiv CH$ 1
$R-C \equiv N$ 1
Chemical bonds
  Bond Number
$\equiv N \dots H-$ 1
$\equiv C-H$ 1
$-C\equiv C-$ 1
$\equiv C-C \equiv$ 1
$-C\equiv N$ 1
Class
molecular solids with hydrogen bonded molecules (03)
Type
homomolecular H-bonded solids (03.01)
Phase name
HC3N Phase I
Phase type
crystalline
Crystal system
monoclinic
Crystal class
prismatic
Crystal class symbol
2/m (C2h)
Crystal spacegroup
P2(1)/m
Molar mass
51.0467 $g/mol$
Density
1.075 $g/cm^3$
State NTP
liquid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 278 K (1 bar) / 5°C
Refringence type
biaxial
Refraction index $n_{\alpha}$
1.43
Pure color
colorless
Diaphaneity
transparent
Luster
vitreous
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