作者:Burkhardt I. Wilke、Angela K. Goodenough、Cory C. Bausch、Erika N. Cline、M. Leigh Abrams、Effrat L. Fayer、Dale C. Swenson、Diana M. Cermak
DOI:10.1107/s0108270110041843
日期:2010.12.15
The chiral compounds (6aS,9S,10aR)-11,11-dimethyl-5,5-dioxo-2,3,8,9-tetrahydro-6H-6a,9-methanooxazaolo[2,3-i][2,1] benzisothiazol-10(7H)-one, C12H17NO4S, (1), (7aS,10S,11aR)-12,12-dimethyl- 6,6-dioxo-3,4,9,10-tetrahydro-7H-7a, 10-methano-2H-1,3- oxazino[2,3-i][2,1] benzisothiazol-11(8H)-one, C13H19NO4S, (2), (6aS,9S,10R,10aR)-11,11-dimethyl-5,5-dioxo-2,3,7,8,9,10-hexahydro-6H-6a,9-methanooxazolo[2,3-i][2,1] benzisothiazol-10- ol, C12H19NO4S, (3), and (7aS,10S,11R,11aR)-12,12-dimethyl-6,6-dioxo-3,4,8,9,10,11-hexahydro-7H-7a-methano-2H-[1,3]oxazino[2,3-i][2,1] benzisothiazol-11-ol, C13H21NO4S, (4), consist of a camphor core with a five-membered spirosultaoxazolidine or six-membered spirosultaoxazine, as both their keto and hydroxy derivatives. In each structure, the molecules are linked via hydrogen bonding to the sulfonyl O atoms, forming chains in the unit-cell b-axis direction. The chains interconnect via weak C-H center dot center dot center dot O interactions. The keto compounds have very similar packing but represent the highest melting [507-508 K for (1)] and lowest melting [457-458 K for (2)] solids.