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A 3D network with the (4²·6·8³) topology of metal-organic framework possessing an open 1D channel was synthesized by rigid and planar tetracarboxylic acid 5,5'-(1H-2,3,5-triazole-1,4-diyl)diisophthalic acid (H4L). The luminescent properties of 1 shows highly sensitive response to nitrobenzene, Fe3+ and CrO4 through luminescence quenching effects, making it a promising luminescent sensor for nitro aromatic compounds, Fe2- through luminescence quenching effects, making it a promising luminescent sensor for nitro aromatic compounds, Fe3+ and CrO4 2-. [ABSTRACT FROM AUTHOR]

The molecule of the title compound, C16H14N2O3, is slightly non-planar, with a dihedral angle of 4.01 (1)° between the two benzene rings. In the crystal structure, molecules are linked into chains by C—H…O intermolecular hydrogen bonds. The crystal structure is stabilized by C—H…π and π-π interactions. [ABSTRACT FROM AUTHOR]

The title compound, C16H14N2O2, is non-planar, with a dihedral angle of 13.97 (8)° between the two benzene rings. There exists an intra­molecular C—H⋯O hydrogen bond, forming a six-membered ring. [ABSTRACT FROM AUTHOR]

The title compound, C15H12N2O3, is non-planar, with a dihedral angle of 83.0 (1)° between the two benzene rings. The mol­ecules are linked into a ribbon along the b axis by inter­molecular C—H⋯O and O—H⋯N hydrogen bonds. The packing is further stabilized by C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

An efficient transition-metal-free photoinduced intracyclization of 4H-chromen-4-ones in EtOH-H2O (7:1, v/v) at ambient temperature for the construction of complicated fused-ring heteroaromatics is established. The reaction proceeds smoothly without requiring any catalysts/additives. [ABSTRACT FROM AUTHOR]

In the title compound, C16H15N3O2, the dihedral angle between the benzotriazole moiety and the other benzene ring is 74.40 (7)°. The short distance [3.488 (3) Å] between the centroids of benzene rings of neighbouring mol­ecules may indicate a π–π interaction, forming centrosymmetric dimers. The packing is further stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]