Nonchiral phosphine ligands are molecules containing a phosphorus atom and one or more organic groups attached to it. These ligands do not have a stereocenter or chiral centre. They are commonly used in coordination chemistry to bind metal ions.
These ligands are commonly used in a variety of catalytic reactions, such as hydrogenation, cross-coupling, and olefin metathesis, as they can stabilize metal complexes and influence their reactivity and selectivity.
Nonchiral phosphine ligands are often preferred over chiral phosphine ligands in reactions that do not require enantioselectivity or stereoselectivity since they are generally less expensive and easier to synthesize.