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Description
| - In addition to well-known complexes of tetraethyl p-tert- butylcalix[4]arene tetraacetate (abbrev. 1) with alkali metal cations, an equimolar complex of this compound with H3O+, i.e. 1.H3O+, was found to be formed slowly in acetonitrile, however, with a very high equilibrium constant, the value of which is beyond the possibilities of exact determination by NMR. Hydrogen bis(1,2-dicarbollyl) cobaltate (HDCC) was used as a proton source. Further, by a combination of 1D and 2D 1H NMR with 13C NMR spectra, it was proved that the ester carbonyls of 1 are not strongly involved in coordination of H3O+. It means that the most probable structure of the 1.H3O+ complex is obviously that with H3O+ bound by strong hydrogen bonds to the phenoxy oxygen atoms of 1.
- In addition to well-known complexes of tetraethyl p-tert- butylcalix[4]arene tetraacetate (abbrev. 1) with alkali metal cations, an equimolar complex of this compound with H3O+, i.e. 1.H3O+, was found to be formed slowly in acetonitrile, however, with a very high equilibrium constant, the value of which is beyond the possibilities of exact determination by NMR. Hydrogen bis(1,2-dicarbollyl) cobaltate (HDCC) was used as a proton source. Further, by a combination of 1D and 2D 1H NMR with 13C NMR spectra, it was proved that the ester carbonyls of 1 are not strongly involved in coordination of H3O+. It means that the most probable structure of the 1.H3O+ complex is obviously that with H3O+ bound by strong hydrogen bonds to the phenoxy oxygen atoms of 1. (en)
- Bylo zjištěno, že tetraethyl p-terc- butylkalix[4]aren tetraacetát tvoří v acetonitrilu equimolární komplex s iontem H3O+. Na základě 1H a 13C NMR spekter byla stanovena pravděpodobná struktura vznikajícího komplexu. (cs)
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Title
| - NMR Evidence for Protonated Tetraethyl p-tert-Butylcalix[4]arene Tetraacetate
- NMR Evidence for Protonated Tetraethyl p-tert-Butylcalix[4]arene Tetraacetate (en)
- NMR důkaz protonizace tetraethyl p-terc-butylcalix[4]arenu tetraacetátu (cs)
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skos:prefLabel
| - NMR Evidence for Protonated Tetraethyl p-tert-Butylcalix[4]arene Tetraacetate
- NMR Evidence for Protonated Tetraethyl p-tert-Butylcalix[4]arene Tetraacetate (en)
- NMR důkaz protonizace tetraethyl p-terc-butylcalix[4]arenu tetraacetátu (cs)
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skos:notation
| - RIV/60461373:22340/07:00019596!RIV08-MSM-22340___
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22340/07:00019596
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Calix[4]arene; protonation; NMR; acetonitrile (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Polish Journal of Chemistry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Makrlík, E.
- Vaňura, Petr
- Kříž, J.
- Dybal, J.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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