Synthesis, Structure and Catalytic Activity of ... - Jacobs University

Fig. 4.1 183 W-NMR spectra of K,Na-11, Cs,Na-12, Cs,Na-13 and Na-14 from top
down dissolved in water/D 2O 106
Fig. 4.2 1 H-NMR spectra of K,Na-11, Cs,Na-12, Cs,Na-13 and Na-14 from top
down dissolved in water/D 2O 107
Fig. 4.3 13 C-NMR spectra of K,Na-11, Cs,Na-12, Cs,Na-13 and Na-14 from top
down dissolved in water/D 2O 108
Fig. 4.4 Ball-and-stick representations of polyanions 11 and 12
[X 2W 20O 70(RuC 6H 6) 2] 10- (X = Sb, Bi) and polyanions 13 and 14
[X 2W 20O 70(RuC 10H 14) 2] 10- (X = Sb, Bi) 110
Fig. 4.5 Time profile of air oxidation of p-xylene using K,Na-11 as a catalyst and
with the addition of BHT after 3 h of the reaction 115
Fig. 4.6 Comparative time profiles for the oxidation of p-xylene using the four
different Ru-POMs as catalysts 116
Fig. 4.7 183 W-NMR spectra of Cs,Na-15 and TBA 6H 5-16 dissolved in water/D 2O
and acetonitrile respectively 119
Fig. 4.8 Combined polyhedral/ball-and-stick representation of
[M 6O 4(OH) 4(H 2O) 2(CH 3COO) 5(AsW 9O 33) 2] 11- (M = Zr, 15; Hf, 16) 120
Fig 4.9 Decomposition of H 2O 2 with time in the presence and absence of TBA 9H 2-
15 and TBA 8H 3-16 122
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