title: Crystal structure of (R)-6'-bromo-3,3-dimethyl-3',4'-di-hydro-2'H-spiro-[cyclo-hexane-1,3'-1,2,4-benzo-thia-diazine] 1',1'-dioxide.
abstract: In the title compound, C14H19BrN2O2S, the 1,2,4-thia-diazinane ring adopts an envelope conformation with the N atom (attached to the sulfonyl group) as the flap, while the cyclo-hexane ring adopts a chair conformation. The mean plane of the cyclo-hexane ring is almost normal to the benzene ring and the mean plane of the 1,2,4-thia-diazinane ring, making dihedral angles of 70.4 (2) and 71.43 (19)°, respectively. Furthermore, the dihedral angle between the benzene ring and the mean plane of the 1,2,4-thia-diazinane ring is 4.91 (18)°. The mol-ecular structure is stabilized by an intra-molecular C-H⋯O hydrogen bond, which encloses an S(6) ring motif. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into chains along [10-1], forming a C(6) graph-set motif. These chains are inter-connected via C-H⋯π inter-actions, leading to chains along [-101], so finally forming sheets parallel to (010).
authors.affiliation: Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, India.
authors.forename: P P
authors.initials: PP
authors.lastname: Shinoj Kumar
authors.affiliation: Department of Studies and Research in Chemistry, U.C.S., Tumkur University, Tumkur 572 013, India.
authors.forename: P A
authors.initials: PA
authors.lastname: Suchetan
authors.affiliation: Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, India.
authors.forename: S
authors.initials: S
authors.lastname: Sreenivasa
authors.affiliation: Institution of Excellence, Vijnana Bhavan, University of Mysore, Manasagangotri, India.
authors.forename: S
authors.initials: S
authors.lastname: Naveen
authors.affiliation: Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, India.
authors.forename: N K
authors.initials: NK
authors.lastname: Lokanath
authors.affiliation: Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, India.
authors.forename: D B
authors.initials: DB
authors.lastname: Aruna Kumar
keywords: benzo­thia­diazine; chirality; crystal structure; hydrogen bonding