Isolation of Aminotroponiminate‐Stabilized Neutral and Cationic Heavier Tetrel Compounds

Synthesis of aminotroponiminate (ATI)‐ligand stabilized Si(IV) and Ge(IV) trichlorides [(ATI)ECl 3 ] (E = Si 1 ; Ge 2 ) has been reported. Compound 1 has been further reacted with GeCl 2 · (1,4‐dioxane) and SnCl 2 to afford ATI‐stabilized Si(IV) cations [(ATI)SiCl 2 ][ECl 3 ] (E = Ge 3 ; Sn 4 ), which are the unique examples of tetrel–tetrylene cation–anion pairs. Compounds 1– 4 have been isolated and characterized by multinuclear NMR spectroscopy and single‐crystal X‐ray diffraction techniques.