1.
Acta Crystallogr E Crystallogr Commun
; 78(Pt 1): 8-11, 2022 Jan 01.
Article
in English
| MEDLINE
| ID: mdl-35079414
ABSTRACT
The pyridazine ring in the title compound, C20H17ClN2O3, adopts a screw-boat conformation. The whole mol-ecule is flattened, the dihedral angles subtended by the least-squares plane of the central aromatic ring with those of the terminal benzene and pyridazine rings being 15.18â (19) and 11.23â (19)°, respectively. In the crystal, the mol-ecules are linked by pairs of N-Hâ¯O bonds into centrosymmetric dimers and by C-Hâ¯π contacts into columns. The results of the Hirshfeld surface analysis show that the most prominent inter-actions are Hâ¯H, accounting for 36.5% of overall crystal packing, and Hâ¯O/Oâ¯H (18.6% contribution) contacts.