Abstract
Mol-ecules of the title compound, C16H16N2O2, occupy special positions on the twofold rotation axes. The heterocyclic ring adopts a slightly twisted envelope conformation with one of the two junction carbon atoms as the flap. The mean planes through the two halves of the mol-ecule form a dihedral angle of 72.01 (2)°. In the crystal, mol-ecules are linked by pairs of C-H⋯O and N-H⋯C contacts into layers parallel to (100). H⋯H contacts make the largest contribution to the Hirshfeld surface (58.9%).
Highlights
The title oxazine derivative contains two six-membered heterocyclic rings located between two benzene rings
We report the crystal structure and Hirshfeld surface analysis for a new oxazine derivative, 1,7-dimethyl5a,6,11a,12-tetrahydrobenzo[b]benzo[5,6][1,4]oxazino[2,3-e][1,4]oxazine
No intermolecular N—HÁ Á ÁO contacts are observed in the title structure
Summary
The title oxazine derivative contains two six-membered heterocyclic rings located between two benzene rings. Oxazine-derived compounds are used in the synthesis of detergents, corrosion inhibitors and industrial dyes (Adib et al, 2006) This class of molecules has been studied extensively as they exhibit antitumor (Sriharsha et al, 2006), antibacterial and antifungal (Belz et al, 2013) activity. Oxazinooxazines are important heterocyclic precursors in the construction of heteropropellanes with applications in material sciences and medicinal chemistry (Dilmacet al., 2017). Such heterocycles can be synthesized by several methods (Konstantinova et al, 2020), with the most direct route being the condensation of amino alcohols with either aldehydes or ketones (Hajji et al, 2003). We report the crystal structure and Hirshfeld surface analysis for a new oxazine derivative, 1,7-dimethyl5a,6,11a,12-tetrahydrobenzo[b]benzo[5,6][1,4]oxazino[2,3-e][1,4]oxazine
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