## Abstract Monocationic bisโallyl complexes [Ln(ฮท^3^โC~3~H~5~)~2~(thf)~3~]^+^[B(C~6~X~5~)~4~]^โ^ (Ln=Y, La, Nd; X=H, F) and dicationic monoโallyl complexes of yttrium and the early lanthanides [Ln(ฮท^3^โC~3~H~5~)(thf)~6~]^2+^[BPh~4~]~2~^โ^ (Ln=La, Nd) were prepared by protonolysis of the trisโallyl
A rare earth catalyst system for the polymerization of 1,3-butadiene: the effect of different carboxylates
โ Scribed by David J. Wilson
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 459 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0032-3861
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๐ SIMILAR VOLUMES
## Abstract The additive effect of triphenylphosphine (Ph~3~P) was investigated in 1,3โbutadiene polymerization with cobalt dichloride (CoCl~2~) activated by methylaluminoxane (MAO); the catalytic system resulted in slowlyโinitiated living polymerization with a high __cis__โ1,4 content (about 99%)
## Abstract Methanol, in combination with a nonโionic phosphazene base, was used to initiate the polymerization of octamethylcyclotetrasiloxane. In bulk, an instantaneous and large increase in viscosity was observed upon addition of the initiator. In toluene solution, the equilibrium state was reac