thumb|150px|The Dess–Martin periodinane|Dess-Martin periodinanePeriodinanes also known as λ5-iodanes are organoiodine compounds with iodine in the +5 oxidation state. These compounds are described as hypervalent because the iodine center has more than 8 valence electrons.
thumb|150px|The Dess–Martin periodinane|Dess-Martin periodinanePeriodinanes also known as λ5-iodanes are organoiodine compounds with iodine in the +5 oxidation state. These compounds are described as hypervalent because the iodine center has more than 8 valence electrons.
==Periodinane compounds== The λ5-iodanes such as the Dess-Martin periodinane have square pyramidal geometry with 4 heteroatoms in basal positions and one apical phenyl group.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).