Alkynes

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Alkyne: A member of the hydrocarbon family containing a carbon-carbon triple bond as the functional group

Acetylene

u Simplest member of the alkyne family

ª linear arrangement

ª sp hybridization

ª 2 p bonds & 1 s bond

Nomenclature

u Common Names: Derived from acetylene due to replacement of one or both hydrogen atoms

Nomenclature

u IUPAC Names: Name the carbon group and use the -yne ending

Physical Properties

u Low Polarity

u Similar to alkanes and alkenes

u Insoluble in water

u Soluble in organic solvents

u Less dense than water

u Melting & Boiling points