Synthesis of a stimulus responsive phosphine ligand and metal binding studies

Cations have been shown to modify a variety of properties of transition metals, including bite angle, isomerization, substrate control, and catalytic activation. Herein describes the synthesis of a novel stimulus responsive phosphine ligand. Ligand binding studies by NMR salt titration show a preference in the order of Na+ > Li+ > K+. Platinum dimethyl and dichloride complexes with the phosphine ligand were also synthesized. Isomerization of the platinum chloride complex between cis and trans is reported.