Three olefin-containing organosilyl derivatives supported on the mono-lacunary
Dawson polyoxometalate (POM), [α2-P2W17O61{(RSi)2O}]6– (R = {CH2=C(CH3)COO(CH2)3}; 1,
{CH2=CHCOO(CH2)3}; 2 and {CH2=CH}; 3), 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. These compounds were unequivocally characterized with
complete elemental analysis, TG/DTA, FT-IR, solution (1H, 13C, 29Si, 31P, and 183W) NMR,
and X-ray crystallography. 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 two of the four oxygen atoms in the
mono-lacunary site of the POM. In the solid-state, two POMs (1, 3) were represented as C1
symmetry, on the other hand, 2 could be depicted as an approximate Cs symmetry. In the
solution, all POMs were represented as Cs symmetry owing to mobility of the organic
chains.
内容記述
■短 報■ 2007 年度神奈川大学総合理学研究所共同研究助成論文
雑誌名
Science Journal of Kanagawa University
巻
19
ページ
67 - 70
発行年
2008-06-30
ISSN
1880-0483
書誌レコードID
AA12068302
著者版フラグ
publisher
その他の言語のタイトル
Preparation of Acid and Oxidation Catalysts Utilizing Lacunary Sites of Polyoxometalates as Useful Chemical Reaction Field
ポリ酸塩の欠損部位を新しい化学反応空間に利用したポリ酸塩ベースの触媒設計
12 19 67-70.pdf
(8.11MB)
