Thermal and photoassisted ring opening of thietane in a triosmium cluster complex

Coordination and Rearrangement of Organic Chalcogenides on a Rhodium−Rhodium Bond: Reactions with Strained-Ring Cyclic Thioethers and with Selenium and Tellurium Ligands

“…In the other, a ring-opening transformation leads to a dimetallacyclic intermediate which then eliminates the alkene. Similar transformations to relieve ring strain in thietanes occur on triosmium cluster complexes, , but with these systems there is no alkene elimination.

2 Possible Pathways for the Conversion of 2b to 3a

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Catalytic Macrocyclizations of Thietanes and Thiiranes by Metal Carbonyl Complexes

“…Proceeding on the assumption that polynuclear coordination can be more effective for the activation of small molecules than coordination to a single metal atom, our initial studies were focused on metal cluster complexes of thietanes. In the early 1990s, we reported the first examples of cluster complexes containing thietane ligands, e.g., 5 and 6 . , We found that these osmium complexes readily underwent facile ring-opening transformations under mild conditions; in fact, osmium complexes having bridging thietane ligands could be isolated only when alkyl substitutents were present on the thietane ring to stabilize it.

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