In problems 4.28 to 4.51, refer to Table 4.3 for isotopic abundances where needed.

Is it correct to interpret the phrase ‘static solution structure’ as meaning necessarily rigid? Use the following molecules to exemplify your answer: PMe₃; OPMe₃; PPh₃; SiMe₄.

Table 4.3

Transcribed Image Text:

Nucleus ΤΗ ²H Li 11B 13C 170 19 F 23 Na 2 Al 29 Si 31 p 7 Se 103 Rh 117. Sn 119 Sn 19 Xe 183 W 195 pt 199 Hg Natural abundance/% >99.9 0.015 92.41 80.1 1.07 0.04 100 100 100 4.69 100 7.63 100 7.68 8.59 26.40 14.31 33.78 16.87 miele v + mk nh -k -le -le-le - -ki -k -k -IN Frequency of observation / MHz (referred to ¹H at 100 MHz) 100 15.35 38.9 32.1 25.1 13.5 94.0 26.45 26.1 19.9 40.5 19.1 3.2 35.6 37.3 27.7 4.2 21.5 17.9 Chemical shift reference (8 0 ppm)* SiMe SiMe4 LICI (1 M in H₂O) F3B-OEt2 SiMe H₂O CFC13 NaCl (1 M in H₂O) [Al(OH₂)]³+ SiMc4 H3PO4 (85%, aq) SeMe₂ Rh (metal) SnMc4 SnMe4 XeOF4 Na₂WO4 (in D₂O) Na₂ [PtCl6] HgMe₂