Crystal structure of the 1:1 adduct of 2,3-diphenyl-3,4,5,6-tetrahydro-2H-1,3-thiazin-4-one with triphenyltin chloride

Abstract

The title adduct, chlorido(2,3-diphenyl-3,4,5,6-tetrahydro-2H-1,3-thiazin-4-one-κO)triphenyltin, [Sn(C6H5)3Cl(C16H15NOS)], resulted from reaction of 2,3-diphenyl-3,4,5,6-tetrahydro-2H-1,3-thiazin-4-one with triphenyltin chloride. The thiazine ring has an envelope conformation with the S atom forming the flap. The molecule has five phenyl rings, two of them attached to the thiazine ring at positions 2 and 3, and three in coordination with the SnIV atom. The three rings of the triphenyltin group are involved in intramolecular interactions of different types, C—H...O, edge-to-face (or T-type) π–π interactions with the 3-phenyl ring of the thiazine, T-type interactions with both phenyl rings of the thiazine etc. On the other hand, all the phenyl rings participate in intermolecular π–π interactions. There is one instance of a `parallel-displaced'-type interaction extending continuously along the a-axis direction and seven instances of T-type interactions stabilizing the crystal lattice.

Keywords

• crystal structure
• thiazine
• thiazinone
• adduct structure
• envelope pucker
• trigonal–bipyramidal
• tin