Molecular and crystal structures of poly-1,3-dioxocane and poly-1,3-dioxonane, the polyformals [? OCH2O? (CH2)m? ]m with m = 5 and m = 6, respectively, are analyzed. Poly-l13-dioxocane is triclinic, space group with m = 5 and m = 6, respectively, are analyzed. Poly-1,3-dioxocane is triclinic, space group (fiber axis) and N (number of chains per unit cell) = 2. Poly-1,3-dioxonane is orthorhombic, (fiber axis) = 18.8 Å, and N = 2. The molecular conformations are roughly where T, G, and G are the trans, and the two gauche forms, respectively.
(fiber axis) 
and N (number of chains per unit cell) = 2. Poly-1,3-dioxonane is orthorhombic, 
(fiber axis) = 18.8 Å, and N = 2. The molecular conformations are roughly 