A polymer, P, can be made from the monomers benzene-1,4-dioyl chloride and benzene-1,3-diamine. Benzene-1,4-dioyl chloride has structure with a benzene ring, two -COCl groups attached at positions 1 and 4. Benzene-1,3-diamine has structure with a benzene ring, two -NH2 groups attached at positions 1 and 3.
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