Abstract Stereoregular trans-arylene-silylene-vinylene polymers of M w= 13100–34800 and PDI= 1.6–2.9 of the general formulas CH 2 [DOUBLE BOND] CH [BOND][[BOND] SiMe 2 C 6 H 4-SiMe 2 CH [DOUBLE BOND] CH [BOND]][BOND](16, 17, 18) and CH 2 [DOUBLE BOND] CH [BOND][[BOND](R) CH [DOUBLE BOND] CHC 6 H 4 CH [DOUBLE BOND] CH [BOND]][BOND](where R=[BOND] Me 2 Si-p [BOND] C 6 H 4-SiMe 2 [BOND],[BOND] Me 2 ...