Abstract:The title compound, C22H20N4O3S, features two fused six-membered rings linked to a 1,2,3-triazole ring which is attached to an ethyl acetate group. The heterocycle in the benzothiazine residue has an envelope conformation with the S atom being the flap. The conformation of the ethyl acetate side chain, which is directed to the same side of the molecule as the C6 ring of the fused-ring system, may be partially established by a pair of weak intramolecular C—H⋯O(carbonyl) interactions. The three-dimensional… Show more
“…The molecule of the title compound is build up from two fused six-membered rings linked to a 1,2,3-triazole ring which is attached to ethyl azidoacetate group (Fig. 1) (Sebbar et al, 2014;Ellouz et al, 2015). ISSN 2056-9890 Atoms C8 and N2 are displaced from the mean plane through the dihydroquinoxalinone unit by 0.0367 (13) and À0.0512 (12) Å , respectively, with the remaining atoms within 0.0222 (15) Å of the plane (r.m.s deviation of the fitted atoms is 0.0234 Å ).…”
The dihydroqinoxalinone portion of the molecule is planar to within 0.0512 (12) Å. In the crystal, a combination of C—H⋯O and C—H⋯N hydrogen bonds together with slipped π-stacking and C—H⋯π(ring) interactions lead to the formation of chains extending along the c-axis direction. The chains are linked into layers parallel to the bc plane by sets of four C—H⋯O hydrogen bonds and the layers are tied together by complementary π-stacking interactions.
“…The molecule of the title compound is build up from two fused six-membered rings linked to a 1,2,3-triazole ring which is attached to ethyl azidoacetate group (Fig. 1) (Sebbar et al, 2014;Ellouz et al, 2015). ISSN 2056-9890 Atoms C8 and N2 are displaced from the mean plane through the dihydroquinoxalinone unit by 0.0367 (13) and À0.0512 (12) Å , respectively, with the remaining atoms within 0.0222 (15) Å of the plane (r.m.s deviation of the fitted atoms is 0.0234 Å ).…”
The dihydroqinoxalinone portion of the molecule is planar to within 0.0512 (12) Å. In the crystal, a combination of C—H⋯O and C—H⋯N hydrogen bonds together with slipped π-stacking and C—H⋯π(ring) interactions lead to the formation of chains extending along the c-axis direction. The chains are linked into layers parallel to the bc plane by sets of four C—H⋯O hydrogen bonds and the layers are tied together by complementary π-stacking interactions.
The title compound is built up from a planar quinoxalinone ring system linked through a methylene bridge to a 1,2,3-triazole ring, which is inclined by 67.09 (4)° to the quinoxalinone ring plane.
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