Several masked disilene monomers, i.e. 1-phenyl-7,8-disilabicyclo[2.2.2]octa-2,5-dienes, were prepared regioselectively by the reaction of unsymmetrically substituted dichlorodisilanes with biphenyl radical anions. These monomers gave polysilylenes with highly ordered structures. Important information on the tacticity of polysilylenes was obtained by detailed analysis of n.m.r, spectra. The mechanism of monomer formation as well as the polymerization mechanism are discussed
Посилання на статтю:
Anionic polymerization of masked disilenes. Regioselective synthesis of monomers, structures of polymers and mechanism of initiation for polysilylenes of the type (R1R2SiSiMe2)n *'1 / Kenkichi Sakamoto, Masaru Yoshida and Hideki Sakurai // Polymer. – 1994. – Vol 35. – P. 4990-4997.