Fa-Yan Meng

Ethyl 3-amino-1-phenyl-1H-benzo[f]chromene-2-carboxyl­ate

The pyranyl ring of the title compound, C22H19NO3, adopts a flattened-boat conformation. The dihedral angle between naphthalene and phenyl rings is 78.3 (1)°The molecule also features an intramolecular N—H⋯Ocarbonyl hydrogen bond. Adjacent molecules are linked by an intermolecular N—H⋯Ocarbonyl hydrogen bond, forming a zigzag chain that runs along the c axis.

The honeycomb network structure of poly[[[μ2-1,3-bis(1H-benzimidazol-2-yl)benzene-κ2N3:N3′](μ2-terephthalato-κ2O:O′)zinc(II)] ethanol solvate]

The terephthalate dianion and the bis(imidazolyl)benzene ligand of the title compound, {[Zn(C(8)H(4)O(4))(C(20)H(14)N(4))].C(2)H(6)O}(n), each bridges two adjacent zinc centers, resulting in a layer-type coordination polymer; the zinc center shows tetrahedral coordination. The disordered ethanol solvent molecules occupy the spaces between the layers and are hydrogen bonded to the layers. The two symmetry-independent dianions lie on different inversion sites.