Treatment of (η5-X-substituted-cyclohexadienyl)tricarbonylmanganese complexes (X = alkoxy, halogeno, dimethylamino and thio) with hydrides and a proton source gave η5-cyclohexadienyl complexes resulting from a cleavage of the C−O, C−Cl, C−N and C−S bonds:  The η3-substituted cyclohexenyl intermediates underwent elimination of an agostic hydrogen and the alkoxy, halogeno, amino, or thio group.

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A synthesis of trithia-[3]-peristylane, C(6)H(6)S(3), a novel C(3)(v)() symmetric thiabowl, from the exotic hydrocarbon bullvalene has been accomplished. The X-ray crystal structure of this trithiabowl displays an unprecedented supramolecular architecture in the solid state with 12 CH.S interactions involving all of its six hydrogen atoms and the two lone pairs on each of the three sulfur atoms.

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