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Effect of the Halide Counterion in the ROMP of exo ‐Benzyl‐[2‐(3,5‐dioxo‐10‐oxa‐4‐aza‐tricyclo[5.2.1.0 2,6 ]dec‐8‐en‐4‐yl)ethyl]dimethyl ammonium Bromide/Chloride
Author(s) -
Rankin David A.,
Schanz HansJörg,
Lowe Andrew B.
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700379
Subject(s) - counterion , chemistry , romp , cationic polymerization , halide , polymer chemistry , derivative (finance) , molar mass , bromide , polymerization , ammonium bromide , medicinal chemistry , organic chemistry , metathesis , ion , polymer , pulmonary surfactant , biochemistry , financial economics , economics
We describe results relating to the effect of halide counterion in the ROMP of a permanently cationic exo ‐7‐oxanorbornene derivative. Statistical copolymerizations of exo ‐benzyl‐[2‐(3,5‐dioxo‐10‐oxa‐4‐aza‐tricyclo[5.2.1.0 2,6 ]dec‐8‐en‐4‐yl)ethyl]dimethyl ammonium bromide/chloride were conducted at different molar ratios and the polymerizations evaluated with respect to their kinetic features, as well as their molecular mass profiles, as a function of conversion, and the ability to produce materials with narrow molecular mass distributions. The polymerization characteristics are rationalized in terms of the in situ formation of the mixed Grubbs' derivative RuClBr(PCy 3 ) 2 CHPh and/or the dibromo analog RuBr 2 (PCy 3 ) 2 CHPh.