Chapter 4 - Jacobs University

Figure 9.62 FTIR spectrum of 23a……………………………………………………………..218
Figure 9.63 TGA spectrum of complex 23a…………………………………………………...219
Figure 9.64 Polyhedral/ball and stick type structural representation of 23. Color scheme: Hf, As,
C and WO 6 units are shown by light green, yellow, blue and red respectively...…220
Figure 9.65 Solution 1 H NMR study of freshly prepared 23a mixture dissolved in
H 2 O/D 2 O………………………………………………………………………….221
Figure 9.66 Solution 13 C NMR ( 1 H Coupled) study of freshly prepared 23a mixture dissolved in
H 2 O/D 2 O………………………………………………………………………….221
Figure 9.67 FTIR spectrum of 24a…………………………………………………..................222
Figure 9.68 TGA spectrum of 24a……………………………………………………………..223
Figure 9.69 Polyhedral/ball and stick type structural representation of 24. Color scheme: Hf, Si
and WO 6 unit shown by light green, green and red respectively……………….…224
Figure 9.70 FTIR spectrum of 25a……………………………………………………………..225
Figure 9.71 TGA spectrum of complex 25a…………………………………………………...226
Figure 9.72 Polyhedral/ball and stick type structural representation of 25. Color scheme Hf, Si
and WO 6 unit shown by light green, green and red respectively……………….…229
Figure 9.73 FTIR spectrum of 26a……………………………………………………………..230
Figure 9.74 Polyhedral/ball and stick type structural representation of 26. Color scheme: Hf, B
and WO 6 unit shown by light green, green and red respectively……….…………233
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