AI Article Synopsis
- The study investigates the reactivity of 4-membered rings containing phosphorus in the +3 oxidation state, specifically with chalcogens like sulfur and selenium.
- These 4-membered rings can expand into more stable 6-membered rings upon reaction with a Lewis base, and different mechanisms for this transformation were explored using both experiments and computational methods.
- Both the 4-membered and 6-membered rings interact with coinage metals, leading to products that feature the phosphorus atom coordinating to the metal in a tripodal arrangement.
Article Abstract
The reactivity of 4-membered (RPCh) rings (Ch = S, Se) that contain phosphorus in the +3 oxidation state is reported. These compounds undergo ring expansion to (RPCh) with the addition of a Lewis base. The 6-membered rings were found to be more stable than the 4-membered precursors, and the mechanism of their formation was investigated experimentally and by density functional theory calculations. The computational work identified two plausible mechanisms involving a phosphinidene chalcogenide intermediate, either as a free species or stabilized by a suitable base. Both the 4- and 6-membered rings were found to react with coinage metals, giving the same products: (RPCh) rings bound to the metal center from the phosphorus atom in tripodal fashion.
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| http://dx.doi.org/10.1021/acs.inorgchem.7b02217 | DOI Listing |
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