• Three Sigma Bonds: For each carbon atom in double bond, three of the four electrons are used in three σ- bond/ sigma bond. • One Pi Bond: One electron left in p- orbital. Sideways overlap of two p orbitals on each carbon atom forms π-bond above and below plane of...
Stereoisomers: Compounds with same structural formula but different arrangement of atoms in space. So chemically different. • If asks what type of stereoisomerism- E/Z. • Why E/Z Isomerism: Stereoisomerism arises because… - Must have double bond as rotation around...
Reactivity: Alkenes more reactive than alkanes as the π- electrons are more exposed than σ- bond electrons. The π- bond is weaker than σ- bond. • Addition Reactions: Each of these reactions involves addition of molecule across double bond, causing π- bond (double...
• Electrophilic Addition: A reaction mechanism. • Electrophile: It is a species that is attracted to an electron- rich centre, where it accepts a pair of electrons to form a covalent bond. Usually a positive ion or contains δ+ charge. It can be something like HBr-...
• Addition Polymerisation: Polymers are named as poly- (alkene monomer). • All alkene reactions in this topic are addition reaction so 100% atom economy- no waste products. • Remember n, should be on correct side and correct posiiton. • Repeat Unit: Repeat unit is...