Tuning the Polymerization Behavior of Silicon-Bridged [1]Ferrocenophanes Using Bulky Substituents
Tuning the Polymerization Behavior of Silicon-Bridged [1]Ferrocenophanes Using Bulky Substituents
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使用大取代基调节硅桥[1]二茂铁的聚合行为
DOI:
10.1021/om5012598
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发表时间:
2015
期刊:
影响因子:
2.8
通讯作者:
Musgrave R
中科院分区:
文献类型:
--
作者:
Musgrave R
Sila[1]ferrocenophanes bearing bulky nitrogen- and silicon-based substituents at theansabridge have been prepared by nucleophilic substitution of chloride at silicon in Fe(η5-C5H4)2SiClH (3) by Li[N(SiMe3)2] and K[Si(SiMe3)3]. The resulting compounds, Fe(η5-C5H4)2Si[N(SiMe3)2]H (4) and Fe(η5-C5H4)2Si[Si(SiMe3)3]H (5), have been fully characterized, and their ring-opening polymerization (ROP) chemistry has been explored. Upon heating for 3 h,4yields the polymer [(η5-C5H4)Fe(η5-C5H4)Si{N(SiMe3)2}H]n(Mn= 38 000 Da, PDI = 7.5), but5does not react due to the larger steric bulk of the substituent on silicon. ROP initiated by Na[C5H5] under photolytic conditions involving Fe−Cp bond cleavage occurred for both4and5, to afford (η5-C5H5)Fe(η5-C5H4)[SiRH(η5-C5H4)Fe(η5-C5H4)]n−1SiRH(η1-C5H5) (R = N(SiMe3)2:n= 20 and 60; R = Si(SiMe3)3:n= 20 and 50), but anionic ROP initiated withnBuLi was unsuccessful, presumably due to the close proximity of the bulky group to the site of nucleophilic attack. The polymeric materials were fully characterized, including the elucidation of atactic microstructures by NMR spectroscopy.
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DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
D. Foucher;R. Ziembinski;B. Tang;P. Macdonald;J. Massey;C. Jaeger;G. Vancso;I. Manners
通讯作者:
I. Manners
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
N. P. Reddy;H. Yamashita;Masato Tanaka
通讯作者:
Masato Tanaka
DOI:
--
发表时间:
2005
期刊:
Organometallics 24
影响因子:
--
作者:
Y.Hatanaka;S.Okada;T.Minami;M.Goto;K.Shimada
通讯作者:
K.Shimada
影响因子:
5.5
作者:
Lee, Joungphil;Ahn, Hyungmin;Park, Moon Jeong
通讯作者:
Park, Moon Jeong
影响因子:
16.6
作者:
Coquiere, David;Bos, Jeffrey;Roelfes, Gerard
通讯作者:
Roelfes, Gerard