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Interaction of Zn+ with isobutylene in the gas phase and in clusters. Metal ion induced cationic polymerization

✍ Scribed by G.M. Daly; Y.B. Pithawalla; Z. Yu; M.S. El-Shall

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
618 KB
Volume
237
Category
Article
ISSN
0009-2614

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✦ Synopsis

A variety of closed shell hydrocarbon ions have been observed following charge transfer from Zn + to isobutylene (Call 8) in a high-pressure mass spectrometric (HPMS) source. The time profiles of these ions and their strong pressure dependence suggest that consecutive and sequential ion-molecule reactions are responsible for their formation. The interaction of Zn ÷ with isobutylene clusters (C4Hs), generated by a supersonic beam expansion results in efficient generation of the CaH9(C4H8 )+ series. These observations suggest gas phase and intracluster polymerization behavior induced by Zn +. Clusters provide a feasible and valuable approach for understanding the mechanism of the early stages of cationic polymerization.

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