Vishnupriya R, Suresh J, Sivakumar S, Kumar R Ranjith, Lakshman P L Nilantha
Department of Physics, The Madura College, Madurai 625 011, India.
Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 10;69(Pt 5):o687-8. doi: 10.1107/S1600536813009008. Print 2013 May 1.
In the title compound, C19H14FN3O3, the central pyran ring adopts a boat conformation with the O atom and the quaternary C atom diagonally opposite displaced by 0.068 (1) and 0.075 (1) Å, respectively, above the mean plane defined by the other four ring atoms. The co-planar atoms of the pyran ring and the fluoro-phenyl ring are nearly perpendicular, as evidenced by the dihedral angle of 87.11 (1)°. The amine group forms an intra-molecular N-H⋯O(nitro) hydrogen bond. In the crystal, mol-ecules are linked into parallel chains along [100] by weak N-H⋯N and C-H⋯N(nitro) hydrogen bonds, generating C(8) and C(9) graph-set motifs, respectively.
在标题化合物C₁₉H₁₄FN₃O₃中，中心吡喃环呈船式构象，O原子和与之对角相对的季碳原子分别在由其他四个环原子所定义的平均平面上方0.068 (1) Å和0.075 (1) Å处。吡喃环和氟苯环的共面原子近乎垂直，二面角为87.11 (1)° 证明了这一点。胺基形成分子内N-H⋯O(硝基)氢键。在晶体中，分子通过弱的N-H⋯N和C-H⋯N(硝基)氢键沿[100]方向连接成平行链，分别生成C(8)和C(9)图形集 motif。
