Crystal structure of 2-(methylamino)tropone

Acta Crystallographica Section E: Crystallographic Communications

Leandri Jansen van Vuuren¹  Hendrik G. Visser¹  Marietjie Schutte-Smith¹ 

[1] Department of Chemistry, PO Box 339, University of the Free State, Bloemfontein, 9301, South Africa;

关键词: crystal structure;    2-(methylamino)tropone;    tropolone;   

DOI  :  10.1107/S2056989019009502

来源: DOAJ

【 摘 要 】

The title compound, 2-(methylamino)cyclohepta-2,4,6-trien-1-one, C8H9NO, crystallizes in the monoclinic space group P21/c, with three independent molecules in the asymmetric unit. The planarity of the molecules is indicated by planes fitted through the seven ring carbon atoms. Small deviations from the planes, with an extremal r.m.s. deviation of 0.0345 Å, are present. In complexes of transition metals with similar ligands, the large planar seven-membered aromatic rings have shown to improve the stability of the complex. Two types of hydrogen-bonding interactions, C—H...O and N—H...O, are observed, as well as bifurcation of these interactions. The N—H...O interactions link molecules to form infinite chains. The packing of molecules in the unit cell shows a pattern of overlapping aromatic rings, forming column-like formations. π–π interactions are observed between the overlapping aromatic rings at 3.4462 (19) Å from each other.

【 授权许可】

Unknown