Polymerizable inorganic–organic hybrid: Syntheses and structures of mono-lacunary Dawson polyoxometalate-based olefin-containing organosilyl derivatives

详细信息    查看全文

• 作者：Takeshi Hasegawa ; Kaori Shimizu ; Hideaki Seki ; Hideyuki Murakami ; Shoko Yoshida ; Kenji Yoza ; Kenji Nomiya
• 关键词：Inorganic– ; organic hybrid ; Dawson type polyoxomelatate ; Olefin-containing organosilyl group ; X-ray structure analysis
• 刊名：Inorganic Chemistry Communications
• 出版年：2007
• 出版时间：October 2007
• 年：2007
• 卷：10
• 期：10
• 页码：1140-1144
• 全文大小：593 K

文摘

Three olefin-containing organosilyl derivatives supported on the mono-lacunary Dawson polyoxometalate (POM), [α₂-P₂W₁₇O₆₁{(RSi)₂O}]⁶⁻ (R = {CH₂C(CH₃)COO(CH₂)₃}, {CH₂CHCOO(CH₂)₃} and {CH₂CH}), as Me₂NH₂ salts, which can act as precursors for the immobilization of the POMs in polymer networks, were obtained by the 2:1 molar ratio reaction of the organosilyl precursor RSi(OCH₃)₃ with K₁₀[α₂-P₂W₁₇O₆₁] · 19H₂O in acidic MeOH/H₂O mixed solutions. X-ray crystallography revealed that the two organic chains connected through an –Si–O–Si– bond were grafted onto the mono-lacunary site of the POM. The four-coordination of each Si atom was attained with the bridging oxygen atom, the terminal organic group R in the organosilyl group, and 2 of the 4 oxygen atoms in the mono-lacunary site of the POM.