Abstract
Grown from ethyl acetate solution, the bis-ethylurethane of 5,7-dodecadiyn-1,12-diol is a monoclinic crystal, a = 16.9740(16), b = 4.9770(5), c = 11.0874(11) Å; β = 101.869(6)°; Z = 2; V = 916.63(16) Å3. The crystal structure contains two N─H…O hydrogen bonds per molecule and has nearly ideal parameters (d = 4.977 Å, ϕ = 45.8°, R = 3.477 Å) for solid-state polymerization.