Living ring-opening metathesis polymerization of 2,3-difunctionalized 7-oxanorbornenes and 7-oxanorbornadienes by Mo(CHCMe2R)(NC6H3-iso-Pr2-2,6)(O-tert-Bu)2 and Mo(CHCMe2R)(NC6H3-iso-Pr2-2,6)(OCMe2CF3)2

Polymerizability of cycloalkenes in a living ring-opening metathesis polymerization initiated by Schrock complexes, 1. Effect of the solvent on the polymerization kinetics

“…The linear variation of these plots, after a short induction period, is in agreement with a constant concentration of propagating species. This short induction period which could be assigned to a non-instantaneous initiation step, has already been reported for such fluorinated initiators 11,12) . However, considering the low value of the polydispersity index of polymers obtained, this phenomenon is probably due to the experimental polymerization technique used.…”

Rate of interconversion of syn and anti rotamers of Mo(CHCMe2Ph)(NAr)(OR)2 and relative reactivity toward 2,3-bis(trifluoromethyl)norbornadiene

“…; Ar = 2,6-C6H3-i-Pr 2 ) are useful initiators for the polymerization of cyclic olefins, [1][2][3][4][5] in some cases in a living manner and stereoselectively. 6 Syn and anti rotamers of such species have been observed in solution when OR is a phenoxide ligand, and they have been shown to interconvert with AG = 16-18 kcal mo 1 -1 (equation 1).…”

Chain‐End and Chain‐Internal Crosslinking in “Latent Reactive” Silicon Elastomers

“…Filler Free fast Cure pure Silicon based elastomer was purchased from Gelest. The metathesis catalysts Cl 2 Ru(IMes)(PCy 3 )[ CHPh] [91] and [Mo CHCMe 2 Ph( N-C 6 H 3 -2,6-i-Pr 2 -) (OCMe(CF 3 ) 2 ) 2 ] [92,93] were synthesized according to literature procedure. All other compounds were used as received.…”