4.1.3 Alkenes Flashcards
unsaturated definition
at least 1 carbon to carbon double or triple bond
hydrocarbon definition
compound containing hydrogen and carbon only
general formulae of alkene
CnH2n+2
how to obtain an alkene
cracking long chained alkanes present in crude oil
How to name an alkene
count longest carbo chain
identify position of double bond
use lowest number
name any alkyl groups
Structural isomer
compound with the same molecular formulae but different structural formulae
electrophile
species that accepts a pair of electrons
what charge does an electrophile have
positive
what electrons are most likely to be attracted by the electrophile
the electrons on the Pi bond
how to do addition polymerisation
remove double bond and extend the end lines
how to join many alkenes
break the pi bond
Sterioisomers
same structural and molecular formulae but different arrangement of atoms in space
conditions for E/Z isomers
a c=c double bond
different groups attached to each carbon atom of the double bond
z isomer
on the same side
e isomer
on different side
cis isomer
same atoms on the same side of the molecule
trans isomer
same atoms diagonally opposite each other
