(芳基)铌(V) -烷基烯催化剂Nb(chsime3)(NAr)[OC(CF 3) 3](pme3) 2开环复分解聚合降冰片烯(ROMP

IF 0.6 4区工程技术 Q4 ENERGY & FUELS

Journal of The Japan Petroleum Institute Pub Date : 2021-09-01 DOI:10.1627/JPI.64.238

Kanchana Chatchaipaiboon, K. Nomura

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Ring Opening Metathesis Polymerization (ROMP) of Norbornenes by (Arylimido)Niobium(V)–Alkylidene Catalysts, Nb(CHSiMe 3 )(NAr)[OC(CF 3 ) 3 ](PMe 3 ) 2

Effects of arylimido ligands on the ring-opening metathesis polymerization (ROMP) of norbornene (NBE), norbornadiene (NBD), and tetracyclododecene (TCD) were investigated using a series of (arylimido)niobium(V) _ alkylidene complex catalysts, Nb(CHSiMe 3 )(NAr)[OC(CF 3 ) 3 ](PMe 3 ) 2 [Ar ＝ 2,6-Me 2 C 6 H 3 ( 1 ), 2-MeC 6 H 4 ( 2 ), 2,6-Cl 2 C 6 H 3 ( 3 )]. The catalytic activity in ROMP of NBE for 1 was higher than for 2 and 3 (toluene at 25 °C, initial NBE concentration 0.44 mmol/mL), and the activity increased at 50 °C. Further increase in the activity (TOF 236 s –1 ) was observed using 3 with addition of 1.0 equiv. of PMe 3 , and activity was higher than that for the analogous vanadium(V) _ alkylidene. These complexes ( 1 - 3 ) could also catalyze ROMP of NBD and TCD and the activities were higher than that for the ROMP of NBE. The dichlorophenylimido analogue ( 3 ) showed the highest activity for the ROMP of TCD, whereas 1 showed higher activity than 2 and 3 for the ROMP of NBD.

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来源期刊

Journal of The Japan Petroleum Institute 工程技术-工程：石油

CiteScore

1.70

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： “Journal of the Japan Petroleum Institute”publishes articles on petroleum exploration, petroleum refining, petrochemicals and relevant subjects (such as natural gas, coal and so on). Papers published in this journal are also put out as the electronic journal editions on the web. Topics may range from fundamentals to applications. The latter may deal with a variety of subjects, such as: case studies in the development of oil fields, design and operational data of industrial processes, performances of commercial products and others