Table 1. Experimental and Calculated 29Si NMR Chemical Shifts of Solvent Complexes of Germylium Ions 3 and 7 and Silylium Ion 8a.
| compound | δ29Si (Siq) | δ29Si (SiMe3) | δ29Si (Si+Me2) | δ29Si (SiMe2) |
|---|---|---|---|---|
| [3(C7D8)] | –87.9 (−93) | –7.9 (−7) | ||
| 7(C7D8)] | (8; −13) | (−13) | ||
| 8(C7D8)] | –2.4 (0) | 98.1 (108) | ||
| [8(ClC6D5)]b | –1.5 (0) | 154.3 (157) |
a
Calculated values for the nondeuterated compounds at GIAO/M06-L/6-311G(2d,p)//M06-2X/6-311+G(d,p) are in parentheses.
b
Calculated for the chloronium ion structure [8–Cl-C6H5]. Chloronium ions are the dominating species when silyl cations are generated in chlorinated arenes; see ref (22).