Hello,

I try to construct PIM-1, which is connected via a dioxane-ring. The endgroups are two oxygen-atoms that are bonded to a benzene ring (see attached picture). I can only define one oxygen-bonded hydrogen atom as the head atom and one aromatic hydrogen-atom as the tail atom. The result is a single-bonded polymer. Does anyone knows how I might construct the homopolymer properly? Thank you for your help !!