Also, whereas poly(t-butylcyclooctatetraene) and poly(trimethylsilylcyclooctatetraene) are soluble in organic solvents, including benzene, methylene chloride, and tetrahydrofuran, the trimethylgermyl- and trimethylstannyl-substituted polymers are not totally soluble.As synthesized, the polymers contain a high percentage of cis double bonds.