Functional Classes I, Structure and Naming - Organic Chemistry Concepts: An EFL Approach - page 21

Table 2.3 Selected Alkenes and Alkynes
IUPAC Name Molecular Formula Structural Formula M.P. (°C) B.P. (°C)

Ethene C 2 H 4 −169 −102

Propene C 3 H 6 −185 −48

1-Butene C 4 H 8 −185 −6.5

1-Pentene C 5 H 10 −138 30

1-Hexene C 6 H 12 −140 64

1-Octene C 8 H 16 −102 123

1-Decene C 10 H 20 −87 171

cis -2-Butene a C 4 H 8 −140 4

trans -2-Butene a C 4 H 8 −106 1

2-Methylpropene C 4 H 8 −141 −7

Cyclopentene C 5 H 8 −93 46

Cyclohexene C 6 H 10 −104 83

Ethyne C 2 H 2 −82 −75

Propyne C 3 H 4 −101 −23

1-Butyne C 4 H 6 −122 8

1-Pentyne C 5 H 8 −98 40

1-Hexyne C 6 H 10 −124 72

2-Hexyne C 6 H 10 −92 84

3-Hexyne C 6 H 10 −51 81

IUPAC, International Union of Pure and Applied Chemistry.
a The prefixes cis- and trans- are covered in Chapter 3.

Table 2.4 Selected Unsaturated Groupings
Group Common Name IUPAC Name

Vinyl Ethenyl

Allyl 2-Propenyl

- Ethynyl

Propargyl 2-Propynyl

IUPAC, International Union of Pure and Applied Chemistry.