Electrophilic Addition in Alkenes (OCR A-Level Chemistry A): Flashcards

Mechanism where alkenes form saturated compounds via addition

Electron-deficient species that accepts an electron pair

$\text{C=C}$ double bond with $\pi$-electrons

Bond breaking where both electrons move to one atom

Species with positively charged carbon atom (3 bonds only)

Temporary dipole from $\pi$-electrons repelling Br-Br electrons

H attaches to C with more H atoms in unsymmetrical addition

Tertiary > Secondary > Primary

Three alkyl groups donate electrons, dispersing positive charge

Less tightly held than $\sigma$-bond electrons, more accessible