Cocrystal-controlled solid-state synthesis (C 3 S 3 ) of imides occurs via heating of cocrystals formed between anhydride and aromatic amine cocrystal formers.
The 2:3 co-crystal of trimesic acid and 1,2-bis(4-pyridyl)ethane (2) exhibits concomitant polymorphism. Form
II of 2 is the expected hexagonal (6,3) network, whereas form I is a (10,3)-a network that exhibits an unprecedented 18-fold level of interpenetration.
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