Inorganic and Organometallic Oligomers and Polymers: by T. Don Tilley, Hee-Gweon Woo (auth.), John F. Harrod,

By T. Don Tilley, Hee-Gweon Woo (auth.), John F. Harrod, Richard M. Laine (eds.)

Although, carbon is just one of 1 hundred plus components, the polymer technology lit­ erature is composed basically of reviews on carbon dependent polymers. partially, this displays the various feedstock assets and partly, the kind of bonds and bond forming reactions avail­ in a position to shape natural polymers that aren't on hand to the inorganic and organometallic chemist. even if, fresh severe curiosity in polymers with novel optical, digital or magnetic houses or polymers which could function precursors to ceramic, semiconductor, metal or superconductor fabrics has served as a motive force for the advance of novel man made routes and characterization concepts that experience introduced many new inorganic and organometallic oligomers and polymer structures. the subsequent chapters characterize an attempt to supply an summary of numerous new and carrying on with components of improvement in inorganic and organometallic polymer technological know-how. This e-book represents the second one in a sequence of books we have now edited on inorganic and organometallic polymer chemistry (1. Transformation of Organo-metallics into universal and unique fabrics, NATO ASI sequence Vol 141. three. Inorganic and Organometallic Polymers with unique houses, NATO ASI sequence in press). during this sequence, we strive to strengthen, for the reader, an figuring out of the breadth, intensity and capability of inorganic and organometallic polymer science.

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Extra resources for Inorganic and Organometallic Oligomers and Polymers: Proceedings of the 33rd IUPAC Symposium on Macromolecules

Example text

This method of preparation is of general utility, although it has some shortcomings particularly in regard to the variety of polymeric species produced. There have been several studies on the reaction (5-11), with several suggestions to improve the yield. Alternate routes to polysilylenes have also been described (12,13), but these will not be considered here, except for one. This exception is the polymerization of some cyclic polysilanes, which was found to occur in the course of this work. The reaction mechanism of polysilylene synthesis has been the subject of several studies, and although much has been learned of the route of the reaction, many details of the mechanism still remain unknown.

Polymethylsilane which has been extensively cross-linked by prolonged contact with the catalyst has an intensity ratio for the vC_ HI vSi-H bands which is considerably higher than for the uncrosslinked polymer. 2. Only two bands are observed YING MU AND J. F. HARROD 28 TABLE 2. Summary of methylsilane polymerization reactions. Solventa Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Catalyst CH(5mL) + DMT(50mg) TOL(2mL) " " " " " " " " TOL(4mL) " DMZ(60mg) CH(5mL) + TOL(2mL) " " " " " TOL(4mL) " CH(20mL) + DMZ(300mg) TOL(5mL) CH(25mL) DMZ(200mg) CH(20mL) DMZ(120mg) a.

Adv. Inorg. Chem. Radiochem. 1982, 25, 1. S. Johnson, M. ; Fink, M. J. Organometallics 1989, 8, 1369. ; Howard, J. A. ; Pugh, N. ; Spencer, J. ; Stone, F. G. ; Woodward, P. J. Chem. , Dalton Trans. 1980, 659. ; Simon, A; Peters, K. Angew. Chem. 22 c. A. TESSIER ET AL. Int. Ed. Engl. 1986, 25, 79. ; Goto, M. J. organomet. Chem. 1984, 271, 225. c) Weidenbruch, M. comments Inorg. Chem. 1986, 5, 247. (19) Whitmire, K. H. J. Coor. , Sect. B, 1988, 17, 95. (20) a) Bennett, M. ; Simpson, K. A. J. Am. Chem.

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