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Conjunction of chirality and slow magnetic relaxation in the supramolecular network constructed of crossed cyano-bridged molecular chains

2012
journal article
article
10.1021/ja307520k
Journal
Journal of the American Chemical Society
Author
Chorąży Szymon

Nakabayashi Koji

Imoto Kenta

Młynarski Jacek

Sieklucka Barbara
Show more
Volume
134
Number
39
Pages
16151-16154
ISSN
0002-7863
eISSN
1520-5126
Language
English
Journal language
English
Abstract in English

The addition of chiral 2,2'-(2,6- pyridinediyl)bis(4-isopropyl-2-oxazoline) ( i Pr-Pybox) to a self-assembled magnetic system gives two enantiomorphic cyano-bridged chains, and . Both compounds crystallize with a structure containing a unique crossed arrangement of one-dimensional chains that form a microporous supramolecular network with large channels (14.9 × 15.1 × 15.3 ) filled with methanol. The investigated materials exhibited optical chirality, as confirmed by natural circular dichroism and UV

  • vis absorption spectra. 1-(SS) and 1-(RR) are paramagnets with cyano-mediated magnetic couplings that lead to a specific spin arrangement with half of the ions coupled ferromagnetically with their neighbors and the other half coupled antiferromag- netically. Significant magnetic anisotropy with the easy axis along the [101] direction was confirmed by single-crystal magnetic studies and can be explained by the single-ion anisotropy of elongated octahedral sites. Below 3 K, the frequency-dependent χM′′(T) signal indicated slow magnetic relaxation characteristic of single-chain magnets.
Affiliation
Wydział Chemii : Zakład Chemii NieorganicznejWydział Chemii : Zakład Chemii Organicznej
Scopus© citations
79
cris.lastimport.wos2024-04-10T01:52:20Z
dc.abstract.enThe addition of chiral 2,2'-(2,6- pyridinediyl)bis(4-isopropyl-2-oxazoline) ( i Pr-Pybox) to a self-assembled $Co^{II}-[W^{V}(CN)_{8}]$ magnetic system gives two enantiomorphic cyano-bridged chains, ${[Co^{II}((S,S)-iPr-Pybox)(MeOH)]_{3}[W^{V}(CN)_{8}]_{2}\cdot 5\cdot 5MeOH\cdot 0.5H_{2}O}_{n}$ and ${[Co^{II}((R,R)-iPr-Pybox)(MeOH)]_{3}[W^{V}(CN)_{8}]_{2}\cdot 5\cdot 5MeOH\cdot 0.5H_{2}O}_{2}(1-RR)$. Both compounds crystallize with a structure containing a unique crossed arrangement of one-dimensional chains that form a microporous supramolecular network with large channels (14.9 $\dot{A}$ × 15.1 $\dot{A}$ × 15.3 $\dot{A}$) filled with methanol. The investigated materials exhibited optical chirality, as confirmed by natural circular dichroism and UV - vis absorption spectra. 1-(SS) and 1-(RR) are paramagnets with cyano-mediated $Co^{II}-W^{V}$ magnetic couplings that lead to a specific spin arrangement with half of the $W^{V}$ ions coupled ferromagnetically with their $Co^{II}$ neighbors and the other half coupled antiferromag- netically. Significant magnetic anisotropy with the easy axis along the [101] direction was confirmed by single-crystal magnetic studies and can be explained by the single-ion anisotropy of elongated octahedral $Co^{II}$ sites. Below 3 K, the frequency-dependent χM′′(T) signal indicated slow magnetic relaxation characteristic of single-chain magnets.pl
dc.affiliationWydział Chemii : Zakład Chemii Nieorganicznejpl
dc.affiliationWydział Chemii : Zakład Chemii Organicznejpl
dc.contributor.authorChorąży, Szymon - 107013 pl
dc.contributor.authorNakabayashi, Kojipl
dc.contributor.authorImoto, Kentapl
dc.contributor.authorMłynarski, Jacek - 173385 pl
dc.contributor.authorSieklucka, Barbara - 131848 pl
dc.contributor.authorOhkoshi, Shin-ichipl
dc.date.accessioned2015-03-04T09:56:36Z
dc.date.available2015-03-04T09:56:36Z
dc.date.issued2012pl
dc.description.number39pl
dc.description.physical16151-16154pl
dc.description.volume134pl
dc.identifier.doi10.1021/ja307520kpl
dc.identifier.eissn1520-5126pl
dc.identifier.issn0002-7863pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/3514
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceBez licencji otwartego dostępu
dc.source.integratorfalse
dc.subtypeArticlepl
dc.titleConjunction of chirality and slow magnetic relaxation in the supramolecular network constructed of crossed cyano-bridged $Co^{II}−W^{V}$ molecular chainspl
dc.title.journalJournal of the American Chemical Societypl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T01:52:20Z
dc.abstract.enpl
The addition of chiral 2,2'-(2,6- pyridinediyl)bis(4-isopropyl-2-oxazoline) ( i Pr-Pybox) to a self-assembled $Co^{II}-[W^{V}(CN)_{8}]$ magnetic system gives two enantiomorphic cyano-bridged chains, ${[Co^{II}((S,S)-iPr-Pybox)(MeOH)]_{3}[W^{V}(CN)_{8}]_{2}\cdot 5\cdot 5MeOH\cdot 0.5H_{2}O}_{n}$ and ${[Co^{II}((R,R)-iPr-Pybox)(MeOH)]_{3}[W^{V}(CN)_{8}]_{2}\cdot 5\cdot 5MeOH\cdot 0.5H_{2}O}_{2}(1-RR)$. Both compounds crystallize with a structure containing a unique crossed arrangement of one-dimensional chains that form a microporous supramolecular network with large channels (14.9 $\dot{A}$ × 15.1 $\dot{A}$ × 15.3 $\dot{A}$) filled with methanol. The investigated materials exhibited optical chirality, as confirmed by natural circular dichroism and UV - vis absorption spectra. 1-(SS) and 1-(RR) are paramagnets with cyano-mediated $Co^{II}-W^{V}$ magnetic couplings that lead to a specific spin arrangement with half of the $W^{V}$ ions coupled ferromagnetically with their $Co^{II}$ neighbors and the other half coupled antiferromag- netically. Significant magnetic anisotropy with the easy axis along the [101] direction was confirmed by single-crystal magnetic studies and can be explained by the single-ion anisotropy of elongated octahedral $Co^{II}$ sites. Below 3 K, the frequency-dependent χM′′(T) signal indicated slow magnetic relaxation characteristic of single-chain magnets.
dc.affiliationpl
Wydział Chemii : Zakład Chemii Nieorganicznej
dc.affiliationpl
Wydział Chemii : Zakład Chemii Organicznej
dc.contributor.authorpl
Chorąży, Szymon - 107013
dc.contributor.authorpl
Nakabayashi, Koji
dc.contributor.authorpl
Imoto, Kenta
dc.contributor.authorpl
Młynarski, Jacek - 173385
dc.contributor.authorpl
Sieklucka, Barbara - 131848
dc.contributor.authorpl
Ohkoshi, Shin-ichi
dc.date.accessioned
2015-03-04T09:56:36Z
dc.date.available
2015-03-04T09:56:36Z
dc.date.issuedpl
2012
dc.description.numberpl
39
dc.description.physicalpl
16151-16154
dc.description.volumepl
134
dc.identifier.doipl
10.1021/ja307520k
dc.identifier.eissnpl
1520-5126
dc.identifier.issnpl
0002-7863
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/3514
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
Bez licencji otwartego dostępu
dc.source.integrator
false
dc.subtypepl
Article
dc.titlepl
Conjunction of chirality and slow magnetic relaxation in the supramolecular network constructed of crossed cyano-bridged $Co^{II}−W^{V}$ molecular chains
dc.title.journalpl
Journal of the American Chemical Society
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations
Wydział Chemii
Młynarski, Jacek
Sieklucka, Barbara
Chorąży, Szymon
No affiliation
Nakabayashi, Koji
Imoto, Kenta
Ohkoshi, Shin-ichi

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