This HTML5 document contains 44 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dctermshttp://purl.org/dc/terms/
n16http://localhost/temp/predkladatel/
n14http://linked.opendata.cz/resource/domain/vavai/riv/tvurce/
n8http://linked.opendata.cz/resource/domain/vavai/subjekt/
n7http://linked.opendata.cz/ontology/domain/vavai/
shttp://schema.org/
skoshttp://www.w3.org/2004/02/skos/core#
n3http://linked.opendata.cz/ontology/domain/vavai/riv/
n12http://linked.opendata.cz/resource/domain/vavai/vysledek/RIV%2F60460709%3A41330%2F13%3A60897%21RIV14-MSM-41330___/
n2http://linked.opendata.cz/resource/domain/vavai/vysledek/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
n9http://linked.opendata.cz/ontology/domain/vavai/riv/klicoveSlovo/
n10http://linked.opendata.cz/ontology/domain/vavai/riv/duvernostUdaju/
xsdhhttp://www.w3.org/2001/XMLSchema#
n17http://linked.opendata.cz/ontology/domain/vavai/riv/jazykVysledku/
n11http://linked.opendata.cz/ontology/domain/vavai/riv/aktivita/
n18http://linked.opendata.cz/ontology/domain/vavai/riv/obor/
n13http://linked.opendata.cz/ontology/domain/vavai/riv/druhVysledku/
n15http://reference.data.gov.uk/id/gregorian-year/

Statements

Subject Item
n2:RIV%2F60460709%3A41330%2F13%3A60897%21RIV14-MSM-41330___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
From extraction experiments and gamma-activity measurements, the extraction constan corresponding to the equilibrium NH4+(aq) + 1 center dot Na+(nb) double left right arrow 1 center dot NH4 (+)(nb) + Na+(aq) taking place in the two-phase water - nitrobenzene system (1 = dibenzo-18-crown-6, aq = aqueous phase, nb = nitrobenzene phase) was evaluated as log K-ex (NH4+,1 center dot Na+) = -0.1 +/- 0.1. Further, the stability constant of the 1 center dot NH4+ complex species in water-saturated nitrobenzene was calculated for a temperature 25 degrees C as log beta (1 center dot NH4+) = 5.7 +/- 0.2. Finally, by using quantum mechanical DFT calculations, the most probable structure of the 1 center dot NH4+ cationic complex was derived. In this complex, the %22central%22 cation NH4+ is bound by three strong linear hydrogen bonds to the three corresponding ethereal oxygen atoms of the parent crown ligand 1. The interaction energy of the resulting complex 1 center dot NH4+ was found to be -796.1 kJ/mol, confirming From extraction experiments and gamma-activity measurements, the extraction constan corresponding to the equilibrium NH4+(aq) + 1 center dot Na+(nb) double left right arrow 1 center dot NH4 (+)(nb) + Na+(aq) taking place in the two-phase water - nitrobenzene system (1 = dibenzo-18-crown-6, aq = aqueous phase, nb = nitrobenzene phase) was evaluated as log K-ex (NH4+,1 center dot Na+) = -0.1 +/- 0.1. Further, the stability constant of the 1 center dot NH4+ complex species in water-saturated nitrobenzene was calculated for a temperature 25 degrees C as log beta (1 center dot NH4+) = 5.7 +/- 0.2. Finally, by using quantum mechanical DFT calculations, the most probable structure of the 1 center dot NH4+ cationic complex was derived. In this complex, the %22central%22 cation NH4+ is bound by three strong linear hydrogen bonds to the three corresponding ethereal oxygen atoms of the parent crown ligand 1. The interaction energy of the resulting complex 1 center dot NH4+ was found to be -796.1 kJ/mol, confirming
dcterms:title
Complexation of the Ammonium Cation with Dibenzo-18-crown-6: Extraction and DFT Study Complexation of the Ammonium Cation with Dibenzo-18-crown-6: Extraction and DFT Study
skos:prefLabel
Complexation of the Ammonium Cation with Dibenzo-18-crown-6: Extraction and DFT Study Complexation of the Ammonium Cation with Dibenzo-18-crown-6: Extraction and DFT Study
skos:notation
RIV/60460709:41330/13:60897!RIV14-MSM-41330___
n7:predkladatel
n8:orjk%3A41330
n3:aktivita
n11:S
n3:aktivity
S
n3:cisloPeriodika
1
n3:dodaniDat
n15:2014
n3:domaciTvurceVysledku
n14:9843167
n3:druhVysledku
n13:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
66473
n3:idVysledku
RIV/60460709:41330/13:60897
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Ammonium cation, dibenzo-18-crown-6, complexation, extraction and stability constants, water-nitrobenzene system, DFT, complex structure
n3:klicoveSlovo
n9:water-nitrobenzene%20system n9:dibenzo-18-crown-6 n9:extraction%20and%20stability%20constants n9:complexation n9:Ammonium%20cation n9:DFT n9:complex%20structure
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[C658893B9C24]
n3:nazevZdroje
ACTA CHIMICA SLOVENICA
n3:obor
n18:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n15:2013
n3:svazekPeriodika
60
n3:tvurceVysledku
Makrlík, Emanuel Vaňura, Petr Toman, Petr
n3:wos
000317014600028
s:issn
1318-0207
s:numberOfPages
5
n16:organizacniJednotka
41330