About: Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe.

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About: Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Fischer carbene complexes of transition metals have found wide synthetic applications. Processes like the cyclopropanation1 and the metathesis or polymerisation of olefins2 are of equal industrial and theoretical importance. Significant intermediates in these reactions are carbene-(h2-alkene) complexes that are usually not stable and could be isolated only in exceptional cases. However, chelated (h2-allylamino)carbene complexes of Cr, W and Fe are stable and can therefore serve as a model for study of the properties of carbene-(h2-alkene) complexes of transition metals.Among other interesting features of these systems restricted rotation around aromate - carbene carbon bond has been observed. The aim of this study was to find the origin of the restricted rotation and to examine factors that influence activation parameters. Full line shape analyses of signals of diastereotopic ortho aromatic protons in carbene complexes of Cr, W and Fe (Fig. 1) was performed by the use of program gNMR 4.1. The values o Fischer carbene complexes of transition metals have found wide synthetic applications. Processes like the cyclopropanation1 and the metathesis or polymerisation of olefins2 are of equal industrial and theoretical importance. Significant intermediates in these reactions are carbene-(h2-alkene) complexes that are usually not stable and could be isolated only in exceptional cases. However, chelated (h2-allylamino)carbene complexes of Cr, W and Fe are stable and can therefore serve as a model for study of the properties of carbene-(h2-alkene) complexes of transition metals.Among other interesting features of these systems restricted rotation around aromate - carbene carbon bond has been observed. The aim of this study was to find the origin of the restricted rotation and to examine factors that influence activation parameters. Full line shape analyses of signals of diastereotopic ortho aromatic protons in carbene complexes of Cr, W and Fe (Fig. 1) was performed by the use of program gNMR 4.1. The values o (en)
Title	Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe. Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe. (en)
skos:prefLabel	Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe. Conformational and D-NMR study of chelated (h2-diallylamino) carbene complexes of Cr, W and Fe. (en)
skos:notation	RIV/60461373:22640/01:00004541!RIV/2004/GA0/226404/N
http://linked.open.../vavai/riv/strany	9
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA203/00/1240)
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Tkadlecová, Marcela Dvořák, Dalimil Dvořáková, Hana
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
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 / Centrální laboratoře
http://linked.open...dnocenehoVysledku	676262
http://linked.open...ai/riv/idVysledku	RIV/60461373:22640/01:00004541
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	carbene complexes, transition metals, D-NMR (en)
http://linked.open.../riv/klicoveSlovo	transition metals D-NMR carbene complexes
http://linked.open...ontrolniKodProRIV	[31908AE4C8BC]
http://linked.open...v/mistoKonaniAkce	Valtice, ČR
http://linked.open...i/riv/mistoVydani	Neuveden
http://linked.open...i/riv/nazevZdroje	Central European NMR Discussion Groups
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	New sterically hindered and unsaturated Fischer carbene complexes of chromium and iron: physico-chemical properties and reactivity
http://linked.open...UplatneniVysledku	2001
http://linked.open...iv/tvurceVysledku	Tkadlecová, Marcela Dvořáková, Hana Dvořák, Dalimil Tobrman, Tomáš
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2001-04-23 (xsd:date)
number of pages	1 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Masarykova univerzita
https://schema.org/isbn	80-210-2566-2
http://localhost/t...ganizacniJednotka	22640

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