“…– the tetrel atom in the cations CH 3 SiH 2 + , 97 TtH 3 + (Tt = C, Si, Ge), 98 C 6 H 15 O 2 SSi + , 99 C 16 H 34 ClN 4 O 2 Si + , 100 C 9 H 21 GeN 3 2+ , 101 C 9 H 31 O 3 Sn 3 + , 102 C 24 H 27 GeN 2 O 3 + , 103 C 44 H 28 IN 4 Sn + , 104 C 6 H 18 PSn + , 105 C 9 H 18 NSn + , 106 C 6 H 19 OSn 2 + , 107 H 6 O 3 Pb 2+ , 108 C 12 H 24 O 4 PbSe 2 2+ , 109 C 24 H 20 N 4 O 2 Pb 2+ , 110 and the carbon atom in the methyl group in the derivatives of ammonium (for example, CH 3 NH 3 + and [C n H 2 n +1 NH 3 ] + ( n = 2, 3, …18)), 49 as well as in carbocation derivatives ( e.g. , CH 3 + , C(CH 3 ) 3 + , etc.…”