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Statements

Subject Item
n2:RIV%2F61388980%3A_____%2F06%3A00050216%21RIV07-AV0-61388980
rdf:type
n4:Vysledek skos:Concept
dcterms:description
Solubility in the (Me4N)(2)SeO4-H2SeO4-H2O and (Me4N)(2)SeO4-Li2SeO4-H2O systems were studied. The new compounds, tetramethylammonium hydrogenselenate monohydrate ((Me4N)HSeO4 center dot H2O) and lithium tetramethylammonium selenate tetrahydrate (Li(Me4N)SeO4 center dot 4H(2)O), have been found in these systems. Both substances were characterised by chemical analysis and IR molecular spectroscopy. Both of the title substances decompose under the influence of X-radiation and, thus, their structures cannot be determined. The radiolysis of both substances was studied in greater detail. Tetramethylammonium hydrogenselenate monohydrate is dehydrated by X-radiation to form the anhydrous salt. The reaction is controlled by first-order kinetics with a rate constant of 1.30(3) x 10(-3) s(-1). Byla studována rozpustnost v ternárních systémech (Me4N)2SeO4–H2SeO4–H2O a (Me4N)2SeO4–Li2SeO4–H2O. V systémech byly nalezeny nové sloučeniny: monohydrát hydrogenselenanu tetramethylammoného a tetrahydrát selenanu lithno tetramethylammoného. Látky byly charakterizovány IR-spektroskopií. Obě látky se rozkládají působením rentgenového záření. Byla stanovena rychlostní konstanta rozkladu monohydrátu hydrogenselenanu tetramethylammoného. Solubility in the (Me4N)(2)SeO4-H2SeO4-H2O and (Me4N)(2)SeO4-Li2SeO4-H2O systems were studied. The new compounds, tetramethylammonium hydrogenselenate monohydrate ((Me4N)HSeO4 center dot H2O) and lithium tetramethylammonium selenate tetrahydrate (Li(Me4N)SeO4 center dot 4H(2)O), have been found in these systems. Both substances were characterised by chemical analysis and IR molecular spectroscopy. Both of the title substances decompose under the influence of X-radiation and, thus, their structures cannot be determined. The radiolysis of both substances was studied in greater detail. Tetramethylammonium hydrogenselenate monohydrate is dehydrated by X-radiation to form the anhydrous salt. The reaction is controlled by first-order kinetics with a rate constant of 1.30(3) x 10(-3) s(-1).
dcterms:title
Preparation, solubility, infrared spectra and radiolysis of tetramethylammonium hydrogenselenate monohydrate and lithium tetramethylammonium selenate tetrahydrate Příprava, rozpustnost, infračervená spektra a radiolýza monohydrátu hydrogenselenanu tetramethylammoného a tetrahydrátu selenanu lithno tetramethylammoného Preparation, solubility, infrared spectra and radiolysis of tetramethylammonium hydrogenselenate monohydrate and lithium tetramethylammonium selenate tetrahydrate
skos:prefLabel
Příprava, rozpustnost, infračervená spektra a radiolýza monohydrátu hydrogenselenanu tetramethylammoného a tetrahydrátu selenanu lithno tetramethylammoného Preparation, solubility, infrared spectra and radiolysis of tetramethylammonium hydrogenselenate monohydrate and lithium tetramethylammonium selenate tetrahydrate Preparation, solubility, infrared spectra and radiolysis of tetramethylammonium hydrogenselenate monohydrate and lithium tetramethylammonium selenate tetrahydrate
skos:notation
RIV/61388980:_____/06:00050216!RIV07-AV0-61388980
n6:strany
411;422
n6:aktivita
n10:Z
n6:aktivity
Z(AV0Z40320502)
n6:cisloPeriodika
3
n6:dodaniDat
n8:2007
n6:domaciTvurceVysledku
n15:9729895
n6:druhVysledku
n17:J
n6:duvernostUdaju
n11:S
n6:entitaPredkladatele
n13:predkladatel
n6:idSjednocenehoVysledku
494266
n6:idVysledku
RIV/61388980:_____/06:00050216
n6:jazykVysledku
n16:eng
n6:klicovaSlova
tetramethylammonium salts; hydrogenselenates; selenates
n6:klicoveSlovo
n7:hydrogenselenates n7:selenates n7:tetramethylammonium%20salts
n6:kodStatuVydavatele
CZ - Česká republika
n6:kontrolniKodProRIV
[52A044CA586B]
n6:nazevZdroje
Collection of Czechoslovak Chemical Communications
n6:obor
n12:CA
n6:pocetDomacichTvurcuVysledku
1
n6:pocetTvurcuVysledku
4
n6:rokUplatneniVysledku
n8:2006
n6:svazekPeriodika
71
n6:tvurceVysledku
Havlíček, D. Turek, L. Mička, Z. Plocek, Jiří
n6:zamer
n14:AV0Z40320502
s:issn
0010-0765
s:numberOfPages
22