Cossee-Arlman mechanism
= Cossee-Arlman mechanism
{c}
The <Cossee-Arlman mechanism> propagates a <polymer> through <alkene> coordination followed by insertion into a <metal>–<carbon> bond. Repetition extends the <metal>-bound chain. <Regioselectivity> controls monomer connectivity; it does not by itself specify <tacticity>.