Abstract
The crystal structure has been solved for a 1:1 molecular complex of 5-aminoisophthalic acid and 1,2-bis(4-pyridyl)ethane. Crystal data: C20H19N3O4, M = 365.38, orthorhombic, P21/n space group; unit cell parameters: a = 10.7521(6) A, b = 11.9151(6) A, c = 13.7645(8) A, V = 1763.40(17) A3, Z = 4, dx = 1.376 g/cm3, R1 = 0.0514, T = 110 K. The 5-aminoisophthalic acid molecule is linked by O-H⋯N hydrogen bond to 1,2-bis(4-pyridyl)ethane, forming a linear hydrogen bonded chain running parallel to [0 3 0]. In the crystal, the intermolecular interactions link 5-aminoisophthalic acid molecules with head-tohead N-H⋯O hydrogen bonds generating R22(14) centrosymmetric dimers, which are extended head-totail via amine and carboxyl group N-H⋯O=C hydrogen bond. The supramolecular structure is consolidated by C-H⋯O hydrogen bonds and π⋯π interactions.
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