2.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$C_6H_6$	Benzene	molecule	1	1.0	1.0	pure	main

Chemical functions

	Function	Number
	$R=CH-R$	6

Chemical bonds

	Bond	Number
	$\eqslantgtr C-H$	6
	$\eqslantgtr C-C\eqslantless$	3
	$>C=C<$	3

Class

molecular solids with apolar molecules (01)

Type

with polyatomic organic apolar molecules (CnHm...) (01.06)

Equivalent liquid

liquid Benzene

Phase name

solid Benzene

Phase type

crystalline

Crystal system

orthorhombic

Crystal class

dipyramidal

Crystal class symbol

mmm (D2h)

Crystal spacegroup

Pbca

Comments

only crystal structure known for solid C6H6 at low pressure, amorphous below 30-60 K

Refringence type

biaxial

Refraction index $n_{\alpha}$

1.544 (100 K), 1.66 (th.)

Refraction index $n_{\beta}$

1.646

Refraction index $n_{\gamma}$

1.550

Pure color

colorless

Color

colorless

Diaphaneity

transparent

Luster

vitreous

Links

• Wikipedia