Polymeric Organosilicon Systems. 30. Preparation and Properties of Polymers Containing Iron(0)-Complex-Coordinated Silole Units
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- 作者：Joji Ohshita ; Takeshi Hamaguchi ; Eiji Toyoda ; Atsutaka Kunai ; Kenji Komaguchi ; Masaru Shiotani ; Mitsuo Ishikawa ; and Akinobu Naka
- 刊名：Organometallics
- 出版年：1999
- 出版时间：April 26, 1999
- 年：1999
- 卷：18
- 期：9
- 页码：1717 - 1723
- 全文大小：227K
- 年卷期：v.18,no.9(April 26, 1999)
- ISSN：1520-6041
文摘
UV irradiation of poly[(tetraethyldisilanylene)(3,4-diethynylenesilole)] in the presence ofan excess of Fe(CO)5 led to the formation of Fe(CO)3-coordinated silole units in the polymerbackbone. The ratio of the Fe(CO)3-coordinated and noncoordinated units in the resultingpolymer was determined to be 2:1 by 1H NMR spectrometry. Similar treatment of poly[(tetramethyldisilanylene)(3,4-diethynylenesilole)] also afforded the corresponding Fe(CO)3-coordinated polymer. The polymers with Fe(CO)3-coordinated silole units exhibit slightlyred-shifted UV absorption bands, relative to the parent noncoordinated polymers. Whendoped with FeCl3 vapor, the Fe(CO)3-coordinated polymers became semiconducting withconductivities on the order of 10-5 S/cm, much higher than the conductivities of the parentpolymers doped with FeCl3, which were determined to be less than 10-8 S/cm. Crystalstructures of two model compounds having Fe(CO)3-coordinated or noncoordinated 3,4-diethynylenesilole units were determined by X-ray crystallography, which suggest enhanced
-conjugation in the Fe(CO)3-coordinated 3,4-diethynylenesilole ring as compared with thenoncoordinated one.
-conjugation in the Fe(CO)3-coordinated 3,4-diethynylenesilole ring as compared with thenoncoordinated one.