13C relaxační studie 1,3-alternující konformace thiacalix[4]arenu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22810%2F01%3A00014634" target="_blank" >RIV/60461373:22810/01:00014634 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

13C relaxation study of 1,3-alternate conformation of thiacalix[4]arene

Popis výsledku v původním jazyce

Calix[4]arenes represent cavitand precursors that can, in general, adopt four basic conformations defined by mutual orientation of the four aromatic rings - cone, partial cone, 1,3-alternate and 1,2-alternate. All of them can become a template for a derivatization on the lower or upper rim that can bring about useful properties for complexation, molecular recognition or supramolecular chemistry. The properties are further varied by substitution of the original methylene linkers between the aromatic residues.Thiacalix[4]arenes posses larger cavity compared to the classical calix[4]arenes implying also a higher flexibility. 25,26,27,28-Tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene was found to form all four basic isomers that are stable at room temperature and can interconvert only at elevated temperature.1 It is thus possible to address molecular tumbling and local picosecond dynamics of individual conformers. Mobility in this timescale may affect the molecular recognition and complexat

Název v anglickém jazyce

13C relaxation study of 1,3-alternate conformation of thiacalix[4]arene

Popis výsledku anglicky

Calix[4]arenes represent cavitand precursors that can, in general, adopt four basic conformations defined by mutual orientation of the four aromatic rings - cone, partial cone, 1,3-alternate and 1,2-alternate. All of them can become a template for a derivatization on the lower or upper rim that can bring about useful properties for complexation, molecular recognition or supramolecular chemistry. The properties are further varied by substitution of the original methylene linkers between the aromatic residues.Thiacalix[4]arenes posses larger cavity compared to the classical calix[4]arenes implying also a higher flexibility. 25,26,27,28-Tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene was found to form all four basic isomers that are stable at room temperature and can interconvert only at elevated temperature.1 It is thus possible to address molecular tumbling and local picosecond dynamics of individual conformers. Mobility in this timescale may affect the molecular recognition and complexat

Druh

O - Ostatní výsledky

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GP203%2F01%2FP066" target="_blank" >GP203/01/P066: NMR relaxační studium derivátů thiakalix[4]arenu</a><br>

Návaznosti

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

Rok uplatnění

2001

Kód důvěrnosti údajů

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