PINKAS, Jiří, Zuzana BRLEJOVÁ, Jiří LÖBL, Jan KRATOCHVÍL and Herbert W. ROESKY. Synthesis and Functionalization of Molecular Building Blocks for Metallophosphates and -silicates. In The Inorganic Side of Molecular Architecture - D3. 1st ed. San Feliu de Guixols, Spain: European Science Foundation. p. 3-3. 2002.
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Basic information
Original name Synthesis and Functionalization of Molecular Building Blocks for Metallophosphates and -silicates
Authors PINKAS, Jiří (203 Czech Republic, guarantor), Zuzana BRLEJOVÁ (203 Czech Republic), Jiří LÖBL (203 Czech Republic), Jan KRATOCHVÍL (203 Czech Republic) and Herbert W. ROESKY (276 Germany).
Edition 1. vyd. San Feliu de Guixols, Spain, The Inorganic Side of Molecular Architecture - D3, p. 3-3, 1 pp. 2002.
Publisher European Science Foundation
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher Spain
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/02:00006345
Organization unit Faculty of Science
Keywords in English molecular phosphonates; silicates; cubic molecules; nonhydrolytic sol-gel
Tags cubic molecules, molecular phosphonates, nonhydrolytic sol-gel, silicates
Changed by Changed by: prof. RNDr. Jiří Pinkas, Ph.D., učo 627. Changed: 31/5/2009 22:21.
Abstract
To gain an insight into possible cage/spacer combinations, we selected compounds of the cubic D4R type, [2,6-(i-Pr)2C6H3(Me3Si)NSi(O)3Ti(O-i-Pr)]4 (1), [Me2NAl(O)3P-t-Bu]4 (2), and [XAl(O)3PR]4 (3, X = Me, i-Bu, R = t-Bu, c-Hex), and studied the reactivity of their amido, alkoxo, and alkyl substituents with a series of protic reagents. Alcohols, silanols, phenols, and acids with different acidity and steric bulkiness were employed. While the dimethylamido groups in 2 are easily replaced, the bulky and less basic aryl(trimethylsilyl)amido groups in 1 resist substitution. Instead, the alkoxy groups in 1 are exchanged or the whole framework is destroyed in the reactions with strongly acidic reagents. A new model compound for the structural moiety P(OSi)1(OAl)3 found in silicoaluminophosphates (SAPO) was prepared by a dealkysilylation reaction of alumazene [2,6-(i-Pr)2C6H3NAlMe]3 with tris(trimethylsilyl)ester of phosphoric acid. The resulting (MeAl)[2,6-(i-Pr)2C6H3N]3{Al[OP(OSiMe3)3]}2(O3POSiMe3) (4) contains a heteroadamantane core and was characterized by analytical and spectroscopic methods and its molecular structure was established by a single crystal X-ray diffraction experiment. This new aluminophosphate could serve as the starting point for developing other structural units as it contains reactive groups.
Links
GA203/01/1533, research and development projectName: Nové bezvodé metody přípravy fosfátových, silikátových, hybridních a oxidických materiálů
Investor: Czech Science Foundation, New Nonaqueous Routes to Phosphate, Silicate, Hybrid, and Oxide Materials
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