Inorganic and organometallic polymers by Vadapalli Chandrasekhar

By Vadapalli Chandrasekhar

This textbook is meant to offer an realizing of the elemental ideas that represent the sphere of non-conventional polymers containing inorganic and organometalic devices because the repeating devices. every one bankruptcy can be self-explanatory with a very good heritage in order that it may be simply understood on the senior undergraduate point. the foundations taken with the training of those polymers, their characterisation and their functions might be mentioned. uncomplicated inorganic chemistry required for the knowledge of every subject is gifted in order that the content material of the bankruptcy is instantly understood. all of the significant inorganic and organometallic polymers corresponding to polyphosphazenes, polysilanes, polysiloxanes, poly-thiazyl, poly-ferrocenes and different polymers containing major team components can be dealt with.

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By Vadapalli Chandrasekhar

This textbook is meant to offer an realizing of the elemental ideas that represent the sphere of non-conventional polymers containing inorganic and organometalic devices because the repeating devices. every one bankruptcy can be self-explanatory with a very good heritage in order that it may be simply understood on the senior undergraduate point. the foundations taken with the training of those polymers, their characterisation and their functions might be mentioned. uncomplicated inorganic chemistry required for the knowledge of every subject is gifted in order that the content material of the bankruptcy is instantly understood. all of the significant inorganic and organometallic polymers corresponding to polyphosphazenes, polysilanes, polysiloxanes, poly-thiazyl, poly-ferrocenes and different polymers containing major team components can be dealt with.

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Prentice Hall, Englewood Cliffs 16. Rochow EG (1987) Silicon and silicones. Springer-Verlag, Berlin, Heidelberg,New York 17. Jones RG, Ando W, Chojnowski J (eds) (2000) Silicon containing polymers. Kluwer, Dordrecht 26 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 1 Inorganic Polymers: Problems and Prospects West R (1986) J Organomet Chem 300:327 Miller RD, Michl J (1989) Chem Rev 89:1359 Yamaguchi S, Zhi-Jan R, Tamao K (1999) J Am Chem Soc 121:2937 Tamao K, Yamaguchi S (2000) J Organomet Chem 611:5 Devylder N, Hill M, Molloy KC, Price GJ (1996) Chem Commun 711 Miller RD, Sooriyakumaran R (1987) J Polym Sci Polym Chem 25:711 Trefonas P, West R (1985) J Polym Sci Polym Chem 23:2099 Imori T, Don Tilley T (1994) Polyhedron 13: 2231 Imori T, Lu V, Cai H, Don Tilley T (1995) J Am Chem Soc 117:9931 Fajan PJ, Beck JS, Lynch AT, Remsen EE, Sneddon, LG (1990) Chem Mater 2:96 Dorn H, Singh RA, Massey JA, Nelson JM, Jaska CA, Lough AJ, Manners I (2000) J Am Chem Soc 122:6669 McWilliams AR, Dorn H, Manners I (2002) Top Curr Chem 220:141 Dorn H, Rodezno JM, Brunnhöfer B, Rivard E, Massey JA, Manners I (2003) Macromolecules 36:291 Neilson RH, Wisian-Neilson P (1988) Chem Rev 88:541 Allcock HR (2003) Chemistry and applications of polyphosphazenes.

19) H + + HSO4 H 2 SO 4 = ; H + + CIO4 With Lewis acids it is noticed that a small amount of protic solvents (such as water or methanol) are required which will result in a Lewis acidLewis base adduct (see Eq. 20). H2O complex are quite acidic and serve as proton sources (see Eq. 21). 21) ciA""cl -Z"" 3 ... H2C=< 'CH 3 l( ,L U C\OH H The anion generated will be simply represented as A" and is closely associated with the cation (Fig. 10). CH 3 H 3 C - C t t ) A( CH 3 Fig. 10. Cation with its counter-anion CH 3 CH 3 I I H 3 C—C—CH 2 —C®.

The latter is also one of the pure inorganic polymers. Although, [NPCl 2 ] n itself is hydrolytically sensitive, it can be used as a precursor for the preparation of a number of poly(organophosphazene)s such as [NP(OR) 2 ] n , [NP(NHR) 2 ] n and [NP(NRR')] n . 33) J v ci Cl N Cl L Cl Poly(dichlorophosphazene) Pentachlorocarbocyclophosphazene, N 3 P 2 CC1 5 , which contains a heteroatom in the form of carbon (in place of phosphorus) can also be polymerized by a thermal treatment to afford the hydrolytically sensitive poly(carbocyclophosphazene) (see Eq.

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