Structural Characterization of β-Agostic Bonds in Pd-Catalyzed Polymerization
Structural Characterization of β-Agostic Bonds in Pd-Catalyzed Polymerization
复制标题
Pd 催化聚合中 β-Agostic 键的结构表征
DOI:
10.1021/acs.organomet.7b00666
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发表时间:
2017
期刊:
影响因子:
2.8
通讯作者:
Diao, Tianning
中科院分区:
文献类型:
--
作者:
Xu, Hongwei;Hu, Chunhua Tony;Wang, Xiaoping;Diao, Tianning
β-agostic Pd complexes are critical intermediates in catalytic reactions, such as olefin polymerization and Heck reactions. Pd β-agostic complexes, however, have eluded structural characterization, due to the fact that these highly unstable molecules are difficult to isolate. Herein, we report the single-crystal X-ray and neutron diffraction characterization of β-agostic (α-diimine)Pd–ethyl intermediates in polymerization. Short Cα–Cβdistances and acute Pd–Cα–Cβbond angles combined serve as unambiguous evidence for the β-agostic interaction. Characterization of the agostic structure and the kinetic barrier for β-H elimination offer important insight into the fundamental understanding of agostic bonds and the mechanism of polymerization.
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影响因子:
4.9
作者:
Marc D. Walter;P. White;M. Brookhart
通讯作者:
M. Brookhart
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
D. J. Tempel;M. Brookhart
通讯作者:
M. Brookhart
DOI:
10.1039/c39880000926
发表时间:
1988-07-15
影响因子:
--
作者:
CARR, N;DUNNE, BJ;SPENCER, JL
通讯作者:
SPENCER, JL
影响因子:
15
作者:
Stambuli, JP;Incarvito, CD;Hartwig, JF
通讯作者:
Hartwig, JF
影响因子:
2.8
作者:
Andrzej Michalak;T. Ziegler
通讯作者:
Andrzej Michalak;T. Ziegler