Diphenylboron chelate of an 3-hydroxy-N-(2-hydroxyalkyl)hydroxamic acid

Abstract

4‐[(1‐Hydro­xy­cyclo­hexyl)­methyl]‐5‐(2‐hydroxy‐1‐phenyl­ethyl)‐2,2‐di­phenyl‐1,3‐dioxa‐4‐azonia‐2‐borata‐4‐cyclo­pentene benzene hemisolvate, C28H32BNO4·0.5C6H6, contains a five‐membered BONCO heterocycle with a B‐envelope conformation, formed by the hydro­xamate portion of the mol­ecule. Bond lengths and angles are similar to those in related compounds. The crystal structure contains a mol­ecule of benzene lying on a crystallographic inversion centre. The heterocycle mol­ecules are linked by pairs of O—H⋯O hydrogen bonds and possible O—H⋯π‐interactions.