This HTML5 document contains 66 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/
n5http://linked.opendata.cz/resource/domain/vavai/riv/tvurce/
n4http://linked.opendata.cz/resource/domain/vavai/projekt/
n19http://linked.opendata.cz/resource/domain/vavai/subjekt/
n15http://linked.opendata.cz/ontology/domain/vavai/
n20http://linked.opendata.cz/resource/domain/vavai/zamer/
shttp://schema.org/
skoshttp://www.w3.org/2004/02/skos/core#
rdfshttp://www.w3.org/2000/01/rdf-schema#
n3http://linked.opendata.cz/ontology/domain/vavai/riv/
n8http://bibframe.org/vocab/
n2http://linked.opendata.cz/resource/domain/vavai/vysledek/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
n6http://linked.opendata.cz/ontology/domain/vavai/riv/klicoveSlovo/
n21http://linked.opendata.cz/ontology/domain/vavai/riv/duvernostUdaju/
xsdhhttp://www.w3.org/2001/XMLSchema#
n18http://linked.opendata.cz/ontology/domain/vavai/riv/aktivita/
n13http://linked.opendata.cz/ontology/domain/vavai/riv/jazykVysledku/
n14http://linked.opendata.cz/resource/domain/vavai/vysledek/RIV%2F00216208%3A11310%2F11%3A10104182%21RIV12-GA0-11310___/
n17http://linked.opendata.cz/ontology/domain/vavai/riv/obor/
n11http://linked.opendata.cz/ontology/domain/vavai/riv/druhVysledku/
n7http://reference.data.gov.uk/id/gregorian-year/

Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F11%3A10104182%21RIV12-GA0-11310___
rdf:type
n15:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1039/c1dt10543d
dcterms:description
A new class of macrocyclic ligands based on 1-oxa-4,7-diazacyclononane was synthesized and their Mn2+ complexes were investigated with respect to stability and relaxation properties. Each ligand has two pendant arms involving carboxylic, phosphonic, phosphinic or phenylphosphinic acid moieties. The crystal structure of the Mn2+ complex with H2L4 confirmed a coordination number of 6 for Mn2+. The protonation constants of all ligands and the stability constants of their complexes with Mn2+ and some biologically or biomedically relevant metal ions were determined by potentiometry and NMR. Variable temperature 1HNMRD and 17O NMR measurements have been performed on MnL1 and MnL2 to provide information on water exchange and rotational dynamics. The 17O chemical shifts indicate hydration equilibrium between mono- and bishydrated species for MnL1, while MnL2 is monohydrated. Small endogenous anions (phosphate, carbonate, citrate) do not replace the coordinated water in either of the complexes, but they induce their slow decomposition. All Mn2+ complexes are stable toward air-oxidation. A new class of macrocyclic ligands based on 1-oxa-4,7-diazacyclononane was synthesized and their Mn2+ complexes were investigated with respect to stability and relaxation properties. Each ligand has two pendant arms involving carboxylic, phosphonic, phosphinic or phenylphosphinic acid moieties. The crystal structure of the Mn2+ complex with H2L4 confirmed a coordination number of 6 for Mn2+. The protonation constants of all ligands and the stability constants of their complexes with Mn2+ and some biologically or biomedically relevant metal ions were determined by potentiometry and NMR. Variable temperature 1HNMRD and 17O NMR measurements have been performed on MnL1 and MnL2 to provide information on water exchange and rotational dynamics. The 17O chemical shifts indicate hydration equilibrium between mono- and bishydrated species for MnL1, while MnL2 is monohydrated. Small endogenous anions (phosphate, carbonate, citrate) do not replace the coordinated water in either of the complexes, but they induce their slow decomposition. All Mn2+ complexes are stable toward air-oxidation.
dcterms:title
Mn(2+) complexes of 1-oxa-4,7-diazacyclononane based ligands with acetic, phosphonic and phosphinic acid pendant arms: Stability and relaxation studies Mn(2+) complexes of 1-oxa-4,7-diazacyclononane based ligands with acetic, phosphonic and phosphinic acid pendant arms: Stability and relaxation studies
skos:prefLabel
Mn(2+) complexes of 1-oxa-4,7-diazacyclononane based ligands with acetic, phosphonic and phosphinic acid pendant arms: Stability and relaxation studies Mn(2+) complexes of 1-oxa-4,7-diazacyclononane based ligands with acetic, phosphonic and phosphinic acid pendant arms: Stability and relaxation studies
skos:notation
RIV/00216208:11310/11:10104182!RIV12-GA0-11310___
n15:predkladatel
n19:orjk%3A11310
n3:aktivita
n18:S n18:P n18:Z
n3:aktivity
P(GA203/09/1056), P(GAP207/11/1437), P(OC 179), S, Z(MSM0021620857)
n3:cisloPeriodika
39
n3:dodaniDat
n7:2012
n3:domaciTvurceVysledku
n5:8959307 n5:5053307 n5:3062228 n5:9417850 n5:3978877 n5:5386381 n5:3157962
n3:druhVysledku
n11:J
n3:duvernostUdaju
n21:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
212778
n3:idVysledku
RIV/00216208:11310/11:10104182
n3:jazykVysledku
n13:eng
n3:klicovaSlova
field dependence; crystal-structures; manganese(II) complexes; lanthanide(III) complexes; structural-characterization; macrocyclic ligands; water-exchange; pressure NMR kinetics; nuclear-magnetic-resonance; MRI contrast agents
n3:klicoveSlovo
n6:water-exchange n6:nuclear-magnetic-resonance n6:structural-characterization n6:lanthanide%28III%29%20complexes n6:macrocyclic%20ligands n6:crystal-structures n6:MRI%20contrast%20agents n6:field%20dependence n6:pressure%20NMR%20kinetics n6:manganese%28II%29%20complexes
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[4D125CB6AF87]
n3:nazevZdroje
Dalton Transactions
n3:obor
n17:CA
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
8
n3:projekt
n4:GAP207%2F11%2F1437 n4:OC%20179 n4:GA203%2F09%2F1056
n3:rokUplatneniVysledku
n7:2011
n3:svazekPeriodika
40
n3:tvurceVysledku
Kotek, Jan Císařová, Ivana Havlíčková, Jana Tóth, Eva Pniok, Miroslav Hermann, Petr Lukeš, Ivan Drahoš, Bohuslav
n3:wos
000295843100023
n3:zamer
n20:MSM0021620857
s:issn
1477-9226
s:numberOfPages
16
n8:doi
10.1039/c1dt10543d
n16:organizacniJednotka
11310