In Situ Generated Heterometallic Nickel–Zinc Catalysts for Ethylene Polymerization
In Situ Generated Heterometallic Nickel–Zinc Catalysts for Ethylene Polymerization
复制标题
原位生成异金属镍锌催化剂用于乙烯聚合
DOI:
10.1021/acs.organomet.8b00454
复制
发表时间:
2018
期刊:
影响因子:
2.8
通讯作者:
Do, Loi H.
中科院分区:
文献类型:
--
作者:
Xiao, Dawei;Do, Loi H.
We have prepared a new series of organometallic nickel complexes ligated by 1-picolyl-4-carboxamidate-1,2,3-triazole donors. Solution metal binding studies by NMR spectroscopy indicated that their reactions with zinc chloride led to the formation of nickel–zinc heterometallics with undefined compositions. These nickel–zinc complexes showed increasing ethylene polymerization activity over the course of 3 h and provided polymers with multimodal distributions. In comparison, the mononickel complexes exhibited constant activity over time and gave narrowly dispersed low molecular weight polyethylene (Mn= ∼103). The addition of zinc sources other than ZnCl2or other metal salts to the mononickel catalysts did not lead to enhancements in their catalytic performance. Our results suggest that further modifications of the carboxamidatetriazole platform are needed to obtain well-defined heterobimetallic complexes for the controlled synthesis of ethylene-based polymers.
影响因子:
--
作者:
Shigenaga Takano;Daisuke Takeuchi;K. Osakada;N. Akamatsu;A. Shishido
通讯作者:
Shigenaga Takano;Daisuke Takeuchi;K. Osakada;N. Akamatsu;A. Shishido
影响因子:
2
作者:
Mankad, Neal P.
通讯作者:
Mankad, Neal P.
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Dawei Xiao;L. Do
通讯作者:
L. Do