Chapter 4 - Jacobs University

More documents

Recommendations

Info

<strong>Chapter</strong> 9 Unpublished Results 9.1.9 Synthesis of K 21 RbLi 12 [(UO 2 ) 3 WO(H 2 O)(P 8 W 48 O 186 )]·29H 2 O (14a) A sample of UO 2 (NO 3 ) 2·6H 2 O (0.0417 g, 0.0825 mmol) was dissolved in 1M LiCH 3 COO buffer solution (20 mL) at pH 4.1 then K 16 Li 2 [H 6 P 4 W 24 O 94 ]·33H 2 O (0.182 g, 0.025 mmol) was added. The solution was heated to 50 o C for 1h and filtered hot. The resulting solution was layered with 0.5 mL of 1 M KCl. The filtrate was allowed to evaporate in an open beaker at room temperature. After 4-5 days a yellow crystalline product started to appear. After that, the evaporation was allowed to continue until the solution level approached the solid product which was then collected by filtration and air dried. Yield: 0.07g (10%). IR : 1138(s), 1084(s), 1017(m), 951(sh), 928(sh), 909(sh), 864(w), 812(s), 684(s), 570(w), 478 (w) cm -1 . 60 58 56 54 52 50 48 46 %Transmittance 44 42 40 38 36 34 32 30 28 26 24 22 20 18 1200 1100 1000 900 800 Wavenumbers (cm-1) 700 600 500 Figure 9.22 FT-IR spectrum of 14a. 165
<strong>Chapter</strong> 9 Unpublished Results 9.1.9.1 Results and discussion The polyanion [(UO 2 ) 3 WO(H 2 O)(P 8 W 48 O 186 )] 34- (14) (Figure 9.23) six uranium atoms which are disordered over six positions. So, the polyanion 14 contains only three uranium ions in the cavity of [H 7 P 8 W 49 O 184 ] 33- precursor. The extra equivalent of tungstate which appears in 14 is formed in situ by decomposition of a minor fraction of the [H 6 P 4 W 24 O 94 ] 18- (P 4 W 24 ) precursor. Compound 14a has been fully characterized in the solid state by single-crystal XRD and IR. Figure 9.23 Polyhedral/ball and representation of 14. Color scheme: U, P and WO 6 units are shown by green, blue and red respectively. 166
Page 1 and 2:
Synthesis, Structure and Properties
Page 3 and 4:
"The greatest book of philosophy, w
Page 5 and 6:
system, space group I4/m, unit cell
Page 7 and 8:
Acknowledgements The accomplishment
Page 9 and 10:
teaching, and Professor Maravanji S
Page 11 and 12:
2.1.2 Single crystal X-ray diffract
Page 13 and 14:
5.5 Conclusion…………………
Page 15 and 16:
9.1.6.1 Results and discussion…
Page 17 and 18:
9.3.5 Synthesis of K 12 [Hf 4 (µ 2
Page 19 and 20:
Crespo………………………
Page 21 and 22:
Figure 5.4 ORTEP view of the asymme
Page 23 and 24:
Figure 9.6 31 P NMR of 7a in H 2 O/
Page 25 and 26:
Figure 9.34 TGA spectrum of 17a…
Page 27 and 28:
Figure 9.62 FTIR spectrum of 23a…
Page 29 and 30:
Table 9.6 Crystal data and structur
Page 31 and 32:
Chapter 1 Introduction heteropolyan
Page 33 and 34:
Chapter 1 Introduction 1.3 Structur
Page 35 and 36:
Chapter 1 Introduction C) Keggin a-
Page 37 and 38:
Chapter 1 Introduction shows no suc
Page 39 and 40:
Chapter 1 Introduction α-[P 2 W 18
Page 41 and 42:
Chapter 1 Introduction Figure 1.7 B
Page 43 and 44:
Chapter 1 Introduction [P 2 W 18 O
Page 45 and 46:
Chapter 1 Introduction 1.5.3 Medici
Page 47 and 48:
Chapter 1 Introduction (17) Evans,
Page 49 and 50:
Chapter 1 Introduction (48) Mizuno,
Page 51 and 52:
Chapter 1 Introduction (84) Isabell
Page 53 and 54:
Chapter 2 were block-diagonal least
Page 55 and 56:
Chapter 2 Experimental 2.2.3 Synthe
Page 57 and 58:
Chapter 2 Experimental 2.2.7 Synthe
Page 59 and 60:
Chapter 2 Experimental 2.2.11 Synth
Page 61 and 62:
Chapter 2 Experimental 2.3Reference
Page 63 and 64:
Chapter 3 The Wheel-Shaped Cu 20 in
Page 65 and 66:
Chapter 3 The Wheel-Shaped Cu 20 3.
Page 67 and 68:
Page 69 and 70:
Chapter 3 The Wheel-Shaped Cu 20 Fi
Page 71 and 72:
Chapter 3 The Wheel-Shaped Cu 20 Cu
Page 73 and 74:
Page 75 and 76:
Chapter 3 The Wheel-Shaped Cu 20 20
Page 77 and 78:
Chapter 4 16-Iron Metal Center Nano
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Chapter 5 Organoruthenium POM Chapt
Page 95 and 96:
Chapter 5 Organoruthenium POM 5.2 S
Page 97 and 98:
Chapter 5 Organoruthenium POM 5.3 X
Page 99 and 100:
Chapter 5 Organoruthenium POM 5.4 R
Page 101 and 102:
Chapter 5 Organoruthenium POM The f
Page 103 and 104:
Chapter 5 Organoruthenium POM On th
Page 105 and 106:
Chapter 5 Organoruthenium POM Figur
Page 107 and 108:
Chapter 5 Organoruthenium POM (11)
Page 109 and 110:
Chapter 6 U-peroxo-Polyoxometalate
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118: Chapter 6 U-peroxo-Polyoxometalate
Page 127 and 128: Chapter 7 Pt-containing Polyoxometa
Page 141 and 142: Chapter 8 Collaborative Work Chapte
Page 143 and 144: Chapter 8 Collaborative Work 8.2.1
Page 145 and 146: Chapter 9 Unpublished Results Figur
Page 147 and 148: Chapter 9 Unpublished Results solid
Page 151 and 152: Chapter 9 Unpublished Results 9.1.3
Page 163 and 164: Chapter 9 Unpublished Results There
Page 167: Chapter 9 Unpublished Results 9.1.8
Page 173 and 174: Chapter 9 Unpublished Results Table
Page 189 and 190: Chapter 9 Unpublished Results Table
Page 201 and 202: Chapter 9 Unpublished Results exhib
Page 219 and 220:
Chapter 9 Unpublished Results The d
Page 221 and 222:
Chapter 9 Unpublished Results 9.3.4
Page 223 and 224:
Chapter 9 Unpublished Results 23a (
Page 225 and 226:
Page 227 and 228:
Chapter 9 Unpublished Results Figur
Page 229 and 230:
Chapter 9 Unpublished Results Figur
Page 231 and 232:
Chapter 9 Unpublished Results Table
Page 233 and 234:
Page 235 and 236:
Chapter 9 Unpublished Results Table
Page 237 and 238:
Curriculum Vitae SIB SANKAR MAL Dep
Page 239 and 240:
EDUCATION PhD Jacobs University (20
Page 241 and 242:
POSTER, ORAL PRESENTATION 1. Poster
Page 243 and 244:
6. “Two Iron-Containing Tungstoge
Page 245 and 246:
Appendix
Page 247 and 248:
Page 249 and 250:
Appendix
Page 251 and 252:
show all

Chapter 4 - Jacobs University

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?