| Abstract: | This paper reports the results of copolymerization of trimethylvinylsilane and dimethyldivinylsilane, respectively, with maleic anhydride. The former forms a 1:1 alternating copolymer while the latter, being a 1,4-pentadiene, forms a 1:2 cyclocopolymer. Consistent with the theory that charge-transfer complexes are involved in certain copolymerizations, it has been shown in this work that both of the vinyl silanes studied form charge-transfer complexes with maleic anhydride. The stoichiometric composition of these complexes have been shown by ultraviolet analysis to be 1:1 molar complexes. The equilibrium constants for complexation of trimethylvinylsilane and dimethyldivinylsilane with maleic anhydride have been determined by NMR and are 0.061 and 0.1071./mole, respectively. |
