Chapter 4 - Jacobs University

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Chapter 6 U-peroxo-Polyoxometalate 6.5 Conclusion In summary, we have isolated a uranium-peroxo derivative of the hitherto unknown “P 6 W 36 ” Wells-Dawson ion. The title POM [Li(H 2 O)K 4 (H 2 O) 3 {(UO 2 ) 4 (O 2 ) 4 (H 2 O) 2 } 2 (PO 3 OH) 2 P 6 W 36 O 136 ] 24- (4) was synthesized by using the poorly investigated precursor [H 6 P 4 W 24 O 94 ] 18- (P 4 W 24 ). Hence this work demonstrates that novel lacunary polytungstate ligands can be stabilized by exotic coordination complex templates. In future work we plan to examine the acid/base and redox properties of 4 in more detail, including electrochemistry and homogeneous oxidation catalysis studies with the green oxidant H 2 O 2 . 119
Chapter 6 U-peroxo-Polyoxometalate 6.6 References (1) a) Comprehensive Coordination Chemistry II, McCleverty, J.; Meyer, T. J., eds. Pergamon Press, Oxford 2004, Vol. 4, Wedd, A. G., ed., 634 (Pope, M. T.); 679(Hill, C. L.); b) Pope, M. T. Compr. Coord. Chem. II 2003, 4, 634. c) Hill, C. L. Compr. Coord. Chem. II 2003, 4, 679. d) Hill, C. L. Ed. Chem. Rev.1998, 98, 1, special issue on Polyoxometalates. e) Okuhara, T.; Mizuno, N.; Misono, M. Adv. Catal. 1996, 41, 113. f) Hill, C. L.; Prosser-McCartha, C. M. Coor. Chem. Rev. 1994, 143, 407. g) Pope, M. T.; Müller, A. Angew. Chem. 1994, 103, 46; Angew. Chem. Int. Ed. 1994, 30, 34. (2) a) Pope, M. T.; Müller, A. (Eds), Polyoxometalate Chemistry: From Topology via Self- Assembly to Applications, Kluwer Academic Publisher, Dordrecht, 2004; b) Polyoxometalate Chemistry for Nano-Composite Design (Eds.: Yamase, T.; Pope, M. T.), Kluwer: Dordrecht, 2002; c) Borrás-Almenar, J. J.; Coronado, E.; Müller, A.; Pope, M. T. Polyoxometalate Molecular Science; Kluwer: Dordrecht, The Netherlands, 2004. (3) Cotton, F. A.; Wilkinson, G. Adv. Inorg. Chem. 4 th ed., Wiley, New York, 1998, p. 992 (Chapter 21). (4) a) Thuéry, P.; Villiers, C.; Jaud, J.; Ephritikhhine, M.; Masci, B. J. Am. Chem. Soc. 2004, 126, 6838. b) Berthet, J.-C.; Nierlich, M.; Ephritikhhine, M. Angew. Chem. 2003,114,1996; Angew. Chem. Int. Ed. 2003, 42, 1942. c) Salmon, L.; Thuéry, P.; Riviere, E.; Gireed, J.-J.; Ephritikhhine, M. Dalton Trans. 2003, 2872. d) Sarsfield, M. J.; Helliwell, M. J. Am. Chem. Soc. 2004, 126, 1036. e) Berthet, J. –C.; Nierlich, M.; Ephritikhhine, M. Chem. Commun. 2003,762. f) Sarsfield, M. J.; Steele, H.; Helliwell, M.; Teat, S. J. Dalton Trans. 2003, 3443-3449. g) Rose, D.; Chang, Y.-D.; Chen, Q.; Zubieta, J. Inorg. Chem. 1994, 33, 4167. (5) Doran, M. B.; Norquist, A. J.; O`Hare, D.; Chem. Mater. 2003, 14, 1449. (6) Evans, W. J.; Kozimor, S. A.; Ziller, J. W. Science 2004, 309, 1834. (7) a) Thuéry, P.; Nierlich, M.; Baldwin, B. W.; Komatsuzaki, N.; Hirose, T. J. Chem. Soc. Dalton Trans. 1999, 1047. b) Salmon, L.; Thuéry, P.; Ephritikhine, M. Polyhedron 120
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Synthesis, Structure and Properties
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"The greatest book of philosophy, w
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system, space group I4/m, unit cell
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Acknowledgements The accomplishment
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teaching, and Professor Maravanji S
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2.1.2 Single crystal X-ray diffract
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5.5 Conclusion…………………
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9.1.6.1 Results and discussion…
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9.3.5 Synthesis of K 12 [Hf 4 (µ 2
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Crespo………………………
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Figure 5.4 ORTEP view of the asymme
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Figure 9.6 31 P NMR of 7a in H 2 O/
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Figure 9.34 TGA spectrum of 17a…
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Figure 9.62 FTIR spectrum of 23a…
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Table 9.6 Crystal data and structur
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Chapter 1 Introduction heteropolyan
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Chapter 1 Introduction 1.3 Structur
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Chapter 1 Introduction C) Keggin a-
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Chapter 1 Introduction shows no suc
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Chapter 1 Introduction α-[P 2 W 18
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Chapter 1 Introduction Figure 1.7 B
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Chapter 1 Introduction [P 2 W 18 O
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Chapter 1 Introduction (17) Evans,
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Chapter 1 Introduction (48) Mizuno,
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Chapter 2 Experimental 2.2.3 Synthe
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Chapter 2 Experimental 2.2.11 Synth
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Chapter 3 The Wheel-Shaped Cu 20 3.
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Curriculum Vitae SIB SANKAR MAL Dep
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EDUCATION PhD Jacobs University (20
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POSTER, ORAL PRESENTATION 1. Poster
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6. “Two Iron-Containing Tungstoge
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Appendix
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Appendix
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