Soluble polymers have been prepared by the sonochemical reductive coupling of phenyltrichlorosilane in toluene in the presence of sodium. Copolymers of phenyltrichlorosilane with phenylmethyldi-chlorosilane were synthesized. The obtained products are of relatively low molecular weight (¯Mn<10,000). Investigations by 29 Si NMR, UV and by the kinetic studies of the iodine addition indicate that polymers consist of fused cyclopolysilanes with 40% content of strained rings (probably four-membered). Homopolymerization and copolymerization of n-hexyl-trichlorosilane and methyltrichlorosilane is compared with that of phenyltrichlorosilane. The former monomer yields soluble homopolymer and copolymers of relatively higher molecular weights than phenyltrichlorosilane. Methyltrichlorosilane yields usually insoluble products and only at a concentration below 20%, were soluble copolymers formed.
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J. M. Ziegler, Synth. Metals, 28, 581 (1989)
R. West, J. Organomet. Chem., 300, 327 (1986)
R. West, in “Comprehensive Organometallic Chemistry”, ed. by G. A. Wilkinson, F. G. A. Stone, E. W. Abel, Pergamon Press, Oxford, Vol. 9, 365 (1983)
P. Trefonas III, R. West, R.D. Miller, D. Hofer, J. Polym. Sci., Letters, 21, 283 (1983)
M. Stolka, H. J. Yuh, K. McGrane, D. M. Pai, J. Polym. Sci., Chem. Ed., 25, 823 (1987)
F. Kajzar, J. Messier, Polymer J., 19, 275 (1987)
S. Yajima, Y. Hasegawa, J. Hayashi, M. Ijmura, J. Mater. Sci., 13, 2569 (1978)
P. A. Bianconi, F. C. Schilling, T. W. Weidman, Macromolecules, 22, 1697 (1989)
K. Matyjaszewski, H. K. Kim, J. Amer. Chem. Soc., 110, 3321 (1988)
K. Matyjaszewski, Y. L. Chen, H. K. Kim, ACS Symposium Series, 360, 78 (1988)
K. Matyjaszewski, H. K. Kim, ACS Polymer Preprints, 29(1), 168 (1988)
E. P. Clark, Ind. Eng. Chem., Anal. Ed., 13, 820 (1941)
H. Matsumoto, H. Miyamoto, N. Kojima, Y. Nagai, J. Chem. Soc., Chem. Comm., 1987, 1316
H. Matsumoto, K. Higuchi, Y. Hoshino, H. Koike, Y. Naoi, Y. Nagai, J. Chem. Soc., Chem. Comm., 1988, 1083
H. Watanabe, H. Shimoyama, T. Muraoka, Y. Kougo, M. Kato, Y. Nagai, Bull. Chem. Soc. Jpn., 60, 769 (1987)
All rate constants are based on the cleavage of Si-Si bonds; therefore the rate constants of the cleavage of the four membered rings are four times higher.
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Matyjaszewski, K., Kim, H.K. Homopolymerization and copolymerization of phenyltrichlorosilane by sonochemical reductive coupling in the presence of sodium. Polymer Bulletin 22, 253–259 (1989). https://doi.org/10.1007/BF00282849
- Molecular Weight