Chapter 4 - Jacobs University

Chapter 9
Unpublished Results
Figure 9.35 Combination of polyhedral/ball-stick representation of 17. Color scheme: Si, Y, C, H are
represented by green, yellow, blue and black respectively. Red polyhedra represent WO 6 units.
9.2.3.3 Solution NMR
To complement our solid state XRD results on 17 with solution studies, we performed 1 H, 13 C,
89 Y and
183 W NMR at room temperature on 17a redissolved in H 2 O/D 2 O.
1 H NMR (Figure 9.36) spectrum exhibits one signal at 1.76 ppm, the 13 C NMR (Figure 9.37)
spectrum exhibits two signals 24.1 and 182 ppm, the 89 Y NMR (Figure 9.39) spectrum exhibits
one signal at 42.6 ppm, and the 183 W NMR (Figure 9.38) exhibits six signals at -107.8, -114.94, -
131.31, -135.28,-161.67 and -173.4 ppm which are fully consistent with the solid state structure.
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