Synthesis and Functionalization of Molecular Building Blocks for Metallophosphates and -silicates

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F02%3A00006345" target="_blank" >RIV/00216224:14310/02:00006345 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Synthesis and Functionalization of Molecular Building Blocks for Metallophosphates and -silicates

Original language description

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(O3

Czech name

Synthesis and Functionalization of Molecular Building Blocks for Metallophosphates and -silicates

Czech description

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(O3

Type

D - Article in proceedings

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

<a href="/en/project/GA203%2F01%2F1533" target="_blank" >GA203/01/1533: New Nonaqueous Routes to Phosphate, Silicate, Hybrid, and Oxide Materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

The Inorganic Side of Molecular Architecture - D3

ISBN

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ISSN

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e-ISSN

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Number of pages

1

Pages from-to

3-3

Publisher name

European Science Foundation

Place of publication

San Feliu de Guixols, Spain

Event location

San Feliu de Guixols, Spain

Event date

Jan 1, 2002

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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