Nazan Ocak

4,5‐Bis(2‐tert‐butyl­phenoxy)­phthalo­nitrile

The title compound, C28H28N2O2, contains three aromatic rings, which are not coplanar and which are distorted from ideal C2v symmetry. The crystal structure involves four intramolecular C—H⋯O hydrogen bonds.

4,4′-(N-Phenyl-2,2′-imino­diethano­xy)­diphthalo­nitrile

The title compound, C26H19N5O2, contains three aromatic rings, which are not coplanar. The crystal structure is stabilized by intermolecular C—H⋯N contacts.

Ethyl 4‐(3‐hydroxy‐6‐methyl‐4‐oxo‐4H‐pyran‐2‐yl­methyl)­piperazine‐1‐carboxyl­ate

The title compound, C14H20N2O5, was synthesized as a Mannich base and characterized by IR, 1H NMR, GC mass spectra and elemental analysis. The piperazine ring displays a chair conformation, and the crystal structure is stabilized by O—H⋯O and C—H⋯O intra- and intermolecular hydrogen bonds.

4-(m-Chlorobenzylamino)-3-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one

The title compound, C10H11ClN4O, displays the characteristic features of 1,2,4-triazole derivatives. The crystal structure is stabilized by N—H⋯O intermolecular hydrogen bonds.