Abstract
Reaction of [9]aneS3 (1,4,7-trithiacyclononane) with KAuCl4 in nitromethane yields the complex [Au([9]aneS3)Cl2][AuCl4]. Heating of this salt yields the bicyclic sulfonium [9]aneS3(+) (4,7-dithia-1-thioniabicyclo[4,3,0]nonane) as a racemic [AuCl4](-) salt. Further reaction produces [[9]aneS3(+)][AuCl2], which undergoes spontaneous resolution upon crystallization. Each enantiomer of [[9]aneS3(+)][AuCl2] was crystallographically characterized as well as the racemic [AuCl4](-) salt.
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