New distannanes containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand

The N-coordinated tin hydrides containing the chiral 2-(4-isopropyl-2-oxazolinyl)-5-phenyl ligand in the presence of catalytic amounts of tetrakis(triphenylphosphine)palladium gave the corresponding distannanes in good yields. The distannanes have been fully characterized by means of the 1H, 13C, 15N and 117Sn NMR measurements. The J(15N–117/119Sn), J(117Sn–119Sn) couplings and single-crystal X-ray analysis of distannane 3 revealed a tendency towards penta-coordination at the tin center as a result of the Sn–N interaction.

The N-coordinated tin hydrides containing the oxazoline ligand in the presence of catalytic amounts of tetrakis(triphenylphosphine)palladium gave the corresponding distannanes in good yields. The J(15N–117/119Sn), J(117Sn–119Sn) couplings and single-crystal X-ray analysis of the distannanes revealed a tendency towards penta-coordination at the tin center as a result of the Sn–N interaction.Figure optionsDownload as PowerPoint slide