10.1021/om950941y.s001 Hiroshi Nakazawa Hiroshi Nakazawa Yoshitaka Yamaguchi Yoshitaka Yamaguchi Katsuhiko Miyoshi Katsuhiko Miyoshi Conversion of Transition-Metal Complexes with Stannyl and Phosphenium Ligands into Those with Stannylene and Phosphine Ligands by Alkyl Migration from Sn to P American Chemical Society 1996 stannylene solution Alkyl Migration Phosphenium Ligands species anion analysis migration conversion Phosphine Ligands Fe bond phosphorus ligand 3 SiOSO 2 CF 3 CH P Treatment TMSOTf Stannyl Stannylene Sn equilibrium Complexe OTf yield NMe N atom cleavage Et Cp 1996-03-05 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Conversion_of_Transition-Metal_Complexes_with_Stannyl_and_Phosphenium_Ligands_into_Those_with_Stannylene_and_Phosphine_Ligands_by_Alkyl_Migration_from_Sn_to_P/3776970 Treatment of Cp(CO)(SnMe<sub>3</sub>)Fe{PN(Me)CH<sub>2</sub>CH<sub>2</sub>NMe(OR)} (R = Me, Et) with Me<sub>3</sub>SiOSO<sub>2</sub>CF<sub>3</sub> (TMSOTf) yields [Cp(CO)(SnMe<sub>2</sub>)Fe{PN(Me)CH<sub>2</sub>CH<sub>2</sub>NMe(Me)}]OTf (<b>2</b>), showing that P−OR bond cleavage and Me migration from Sn to P take place. The X-ray analysis of <b>2</b> reveals that this is a stannylene complex of iron stabilized by both an OTf<sup>-</sup> anion and an N atom in the phosphorus ligand. In solution, <b>2</b> is in equilibrium with an OTf-dissociated species.