title: Crystal structure of (E)-4-(acet-oxy-imino)-N-allyl-3-isopropyl-2,6-di-phenyl-piperi-dine-1-carbo-thio-amide.
abstract: The title compound, C26H31N3O2S, crystallizes with two mol-ecules (A and B) in the asymmetric unit. In each case, the piperidine ring exists in a twist-boat conformation. The dihedral angle between the phenyl rings is 46.16 (12)° in mol-ecule A and 44.95 (12)° in mol-ecule B. In both mol-ecules, the allyl side chain is disordered over two orientations in a 0.649 (9):0.351 (9) ratio for mol-ecule A and 0.826 (10):0.174 (10) ratio for mol-ecule B. In the crystal, neither mol-ecule forms a hydrogen bond from its N-H group, presumably due to steric hindrance. A+A and B+B inversion dimers are formed, linked by pairs of weak C-H⋯O hydrogen bonds enclosing R 2 (2)(22) ring motifs.
authors.affiliation: Department of Physics, Shri Angalamman College of Engineering and Technology, Siruganoor, Tiruchirappalli, India.
authors.forename: T
authors.initials: T
authors.lastname: Mohandas
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar, Chidambaram, India.
authors.forename: K Gokula
authors.initials: KG
authors.lastname: Krishnan
authors.affiliation: Department of Physics, Rover College of Engineering and Technology, Perambalur, India.
authors.forename: S
authors.initials: S
authors.lastname: Balamurugan
authors.affiliation: Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland.
authors.forename: William T A
authors.initials: WT
authors.lastname: Harrison
authors.affiliation: Department of Chemistry, Annamalai University, Annamalainagar, Chidambaram, India.
authors.forename: V
authors.initials: V
authors.lastname: Thanikachalam
authors.affiliation: Department of Physics, Urumu Dhanalakshmi College, Tiruchirappalli, India.
authors.forename: P
authors.initials: P
authors.lastname: Sakthivel
keywords: acet­oxy­imino; carbo­thio­amide; crystal structure; inversion dimers; piperidine