Abstract

AbstractThe reaction of SnCl2 with the Janus Head ligands Ph2PPic (1, Pic = 2‐picolyl) and Ph2P(NSiMe3)Pic (2) led to the novel tin complexes [(Ph2PPic)Sn(Cl)][SnCl3] (4) and [(Cl)2Sn{(NH)(Pic)PPh2}]·THF (6). The hemilability of the Ph2PPic (1) ligand in 4 was investigated by low temperature 119Sn and 31P NMR studies. A remarkable equilibrium of two formal SnCl2 units with 1 could be revealed. Crystal structure analysis of 4 and 6 substantiated the understanding of the hemilabile behaviour of the presented Janus Head ligands.

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