A 1,2,4‐diazaphospholane complex of rhodium

The crystal structure of a prospective olefin catalyst, namely {2‐1‐acetyl‐5‐(2‐hydroxy­phenyl)‐4‐phenyl‐1,2,4‐di­aza­phospholan‐3‐yl]­phenyl acetate‐κP}chloro­(η⁴‐cyclo­octa‐1,5‐diene)rhodium(I) di­chloro­methane solvate, RhCl(C₈H₁₂)(C₂₄H₂₃N₂O₄P)]·CH₂Cl₂, has been determined at 173 K. The five‐membered heterocycle of the phosphine ligand is in a slightly distorted twist conformation. An intramolecular N1—H1?Cl1 hydrogen bond contributes to the adopted conformation and may additionally participate in secondary interactions with substrates during catalysis.