TRIGONAL CONFIGURATION OF DISULFONYL CARBANIONS

One-bond C-H coupling constants of the anionic carbon of anions derived from disulphones (1)-(3) provide unequivocal evidence for the trigonal hybridization of the charged carbon, previously assigned as tetrahedral; it is shown that the 1,3-dithiolane 1,1,3,3-tetraoxide undergoes ring opening upon treatment with strong bases.