About: Acidity of hydroxamic acids and amides

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Acidity of hydroxamic acids and amides Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The relatively strong acidity of hydroxamic acids was analyzed by means of isodesmic reactions in which this acid or its anion is formed from simpler precursors. Acidity of amides was analyzed in the same way. Energies of all compounds involved in the reactions were calculated at the B3LYP/AUG-cc-pVTZ//B3LYP/6-311+G(d,p) level; at this level a good agreement was reached with the sparse experimental data. Interpretation of the results was the same as in the recent discussion of the acidity of carboxylic acids, and the conclusions were similar: both amides and hydroxamic acids are stabilized with respect to simpler reference molecules of amines or N-alkylhydroxylamines, respectively. However, their anions are stabilized still more and are responsible forthe acidity. This effect is stronger in hydroxamic acids or amides than in carboxylic acids. The problem of whether it is due to resonance depends on the definition of this term. Semiquantitative omparison suggests that resonance in hydroxamic acids is The relatively strong acidity of hydroxamic acids was analyzed by means of isodesmic reactions in which this acid or its anion is formed from simpler precursors. Acidity of amides was analyzed in the same way. Energies of all compounds involved in the reactions were calculated at the B3LYP/AUG-cc-pVTZ//B3LYP/6-311+G(d,p) level; at this level a good agreement was reached with the sparse experimental data. Interpretation of the results was the same as in the recent discussion of the acidity of carboxylic acids, and the conclusions were similar: both amides and hydroxamic acids are stabilized with respect to simpler reference molecules of amines or N-alkylhydroxylamines, respectively. However, their anions are stabilized still more and are responsible forthe acidity. This effect is stronger in hydroxamic acids or amides than in carboxylic acids. The problem of whether it is due to resonance depends on the definition of this term. Semiquantitative omparison suggests that resonance in hydroxamic acids is (en)
Title	Acidity of hydroxamic acids and amides Acidity of hydroxamic acids and amides (en)
skos:prefLabel	Acidity of hydroxamic acids and amides Acidity of hydroxamic acids and amides (en)
skos:notation	RIV/60461373:22310/03:00007888!RIV/2004/MSM/223104/N
http://linked.open.../vavai/riv/strany	1176-1180
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA4072005), Z(AV0Z4055905), Z(MSM 223100001)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Böhm, Stanislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemické technologie
http://linked.open...dnocenehoVysledku	597334
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/03:00007888
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Acidity of hydroxamic acids and amides . B3LYP/AUG-cc-pVTZ//B3LYP/6-311+G(d,p) (en)
http://linked.open.../riv/klicoveSlovo	Acidity of hydroxamic acids and amides . B3LYP/AUG-cc-pVTZ//B3LYP/6-311+G(d p)
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[A59964F2C0DB]
http://linked.open...i/riv/nazevZdroje	Organic and Biomolecular Chemistry
http://linked.open...in/vavai/riv/obor	CH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Structure and Spectra of Hydroxamic Acids and Their Derivatives under Various Conditions
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	1
http://linked.open...iv/tvurceVysledku	Böhm, Stanislav Exner, O.
http://linked.open...n/vavai/riv/zamer	Chemical principles of selected biological phenomena in medicine and ecology http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223100001
issn	1477-0520
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	22310

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 48 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software