Phosphoramidic difluoride complexes of tin(IV) chloride: A multinuclear (119Sn, 31P, 19F and 1H) NMR characterisation in solution

Two new octahedral complexes of the type SnCl4 · 2(O)PF2NR2 (R = Me (1) or Et (2)) were prepared and characterised by multinuclear NMR spectroscopy, showing that the two ligands are in a cis position. Additionally, DFT/ B3LYP calculations have been carried out to support the interpretations of NMR data.