About: Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions.

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

About: Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions. 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	O-tert-butyldimethylsilyl (1) and O-tert-butyldiphenylsilyl (2) benzhydroxamates were prepared and their structure in the solid state was determined by X-ray diffraction and NMR spectroscopy (15N, 13C and 29Si). The solution NMR spectra indicate some processes. In chloroform, both compounds isomerize to an equilibrium mixture of hydroxamic (A) and hydroximic (B or C) derivatives at room temperature. The exact structure of the hydroximic derivative could not be determined. The ratio between the isomers is affected by the solvent. In benzene solutions the hydroximic isomer is preferred whereas in acetonitrile the opposite is true. In dimethylsulfoxide the NMR lines are broad but slow heating to 80 C or above produces disilylated derivatives of the type Z-O1,O4-bis(tert-butyldimethylsilyl)-benzhydroximate. The changes in structure are only partially reversible, the nature of the process responsible for line broadening is not clear. O-tert-butyldimethylsilyl (1) and O-tert-butyldiphenylsilyl (2) benzhydroxamates were prepared and their structure in the solid state was determined by X-ray diffraction and NMR spectroscopy (15N, 13C and 29Si). The solution NMR spectra indicate some processes. In chloroform, both compounds isomerize to an equilibrium mixture of hydroxamic (A) and hydroximic (B or C) derivatives at room temperature. The exact structure of the hydroximic derivative could not be determined. The ratio between the isomers is affected by the solvent. In benzene solutions the hydroximic isomer is preferred whereas in acetonitrile the opposite is true. In dimethylsulfoxide the NMR lines are broad but slow heating to 80 C or above produces disilylated derivatives of the type Z-O1,O4-bis(tert-butyldimethylsilyl)-benzhydroximate. The changes in structure are only partially reversible, the nature of the process responsible for line broadening is not clear. (en)
Title	Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions. Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions. (en)
skos:prefLabel	Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions. Structure of Monosilylated Benzhydroxamic Acids in Crystals and Solutions. (en)
skos:notation	RIV/67985858:_____/01:27013028!RIV/2003/AV0/A27003/N
http://linked.open.../vavai/riv/strany	81;90
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/99/M037), P(IAA4072005), P(IAA4072605), P(LB98233), Z(AV0Z4072921), Z(MSM 113100001)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Schraml, Jan Blechta, Vratislav Karban, Jindřich Soukupová, Ludmila
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	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	697499
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/01:27013028
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	benzhydroxamic acid; t-Butyldimethylsilyl derivatives; t-Butyldiphenylsilyl derivatives (en)
http://linked.open.../riv/klicoveSlovo	benzhydroxamic acid t-Butyldimethylsilyl derivatives t-Butyldiphenylsilyl derivatives
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B5679FFBBD4F]
http://linked.open...i/riv/nazevZdroje	Journal of Organometallic Chemistry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of molecular and crystal structures Derivatives of Hydroxylamine, Solid State and Solution Structure. VNMR NET - integrated network for collection, sharing and sophisticated processing of NMR data Structure and Spectra of Hydroxamic Acids and Their Derivatives under Various Conditions
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	628
http://linked.open...iv/tvurceVysledku	Císařová, I. Schraml, Jan Blechta, Vratislav Karban, Jindřich Soukupová, Ludmila
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20113100001 Theoretical fundamentals of chemical processes: equilibrium and dynamic behavior of multiphase reacting systems
issn	0022-328X
number of pages	10 (xsd:int)

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, 81 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software