title: Crystal structure of 4-chloro-2-[(5-eth-oxy-1,3,4-thia-diazol-2-yl)meth-yl]-5-(piperidin-1-yl)pyridazin-3(2H)-one.
abstract: In the title mol-ecule, C14H18ClN5O2S, the six atoms of the 1,6-di-hydro-pyridazine ring are essentially coplanar (r.m.s. deviation = 0.008 Å), and the dihedral angle between this and the 1,3,4-thia-diazole ring is 62.06 (10)°. In the crystal, centrosymmetrically related mol-ecules are linked by inter-molecular C-H-O hydrogen bonding to form a supra-molecular dimer. The terminal ethyl group is statistically disordered over two positions.
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, People's Republic of China.
authors.forename: Hongsen
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, People's Republic of China.
authors.forename: Xinfeng
authors.initials: X
authors.lastname: Ren
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, People's Republic of China.
authors.forename: Ya
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, People's Republic of China.
authors.forename: Linjing
authors.initials: L
authors.lastname: Zhao
keywords: C—H—O hydrogen bonding; crystal structure; pyridazinone derivatives