Magnetic anisotropy of the antiferromagnetic ring [Cr8F8PiV16]
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- J van Slageren
- R Sessoli
- D Gatteschi
- AA Smith
- M Helliwell
- REP Winpenny
- A Cornia
- AL Barra
- AGM Jansen
- E Rentschler
- GA Timco
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000173248200028&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1002/1521-3765(20020104)8:1<277::AID-CHEM277>3.0.CO;2-D
- Externe Identifier
- Clarivate Analytics Document Solution ID: 511CZ
- PubMed Identifier: 11826863
- ISSN
- 0947-6539
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- CHEMISTRY-A EUROPEAN JOURNAL
- Schlüsselwörter
- antiferromagnetic rings
- cantilever torque magnetometry
- chromium
- high-field high-frequency EPR spectroscopy
- magnetic anisotropy
- molecular magnets
- Paginierung
- 277 - 285
- Datum der Veröffentlichung
- 2002
- Status
- Published
- Titel
- Magnetic anisotropy of the antiferromagnetic ring [Cr<sub>8</sub>F<sub>8</sub>PiV<sub>16</sub>]
- Sub types
- Article
- Ausgabe der Zeitschrift
- 8
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Autoren
- Joris van Slageren
- Roberta Sessoli
- Dante Gatteschi
- Andrew A Smith
- Madeleine Helliwell
- Richard EP Winpenny
- Andrea Cornia
- Anne-Laure Barra
- Aloysius GM Jansen
- Eva Rentschler
- Grigore A Timco
- DOI
- 10.1002/1521-3765(20020104)8:1<277::aid-chem277>3.0.co;2-d
- eISSN
- 1521-3765
- ISSN
- 0947-6539
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- Chemistry - A European Journal
- Sprache
- en
- Paginierung
- 277 - 285
- Datum der Veröffentlichung
- 2002
- Status
- Published
- Herausgeber
- Wiley
- Herausgeber URL
- http://dx.doi.org/10.1002/1521-3765(20020104)8:1%3C277::aid-chem277%3E3.0.co;2-d
- Datum der Datenerfassung
- 2021
- Titel
- Magnetic Anisotropy of the Antiferromagnetic Ring [Cr8F8Piv16]
- Ausgabe der Zeitschrift
- 8
Data source: Crossref
- Abstract
- A new tetragonal (P42(1)2) crystalline form of [Cr8F8Piv16] (HPiv = pivalic acid, trimethyl acetic acid) is reported. The ring-shaped molecules, which are aligned in a parallel fashion in the unit cell, form almost perfectly planar, regular octagons. The interaction between the CrIII ions is antiferromagnetic (J = 12 cm(-1)) which results in a S = 0 spin ground state. The low-lying spin excited states were investigated by cantilever torque magnetometry (CTM) and high-frequency EPR (HFEPR). The compound shows hard-axis anisotropy. The axial zero-field splitting (ZFS) parameters of the first two spin excited states (S = 1 and S = 2, respectively) are D1 = 1.59(3) cm(-1) or 1.63 cm(-1) (from CTM and HFEPR, respectively) and D2 = 0.37 cm(-1) (from HFEPR). The dipolar contributions to the ZFS of the S = 1 and S = 2 spin states were calculated with the point dipolar approximation. These contributions proved to be less than the combined single-ion contributions. Angular overlap model calculations that used parameters obtained from the electronic absorption spectrum, showed that the unique axis of the single-ion ZFS is at an angle of 19.3(1) degrees with respect to the ring axis. The excellent agreement between the experimental and the theoretical results show the validity of the used methods for the analysis of the magnetic anisotropy in antiferromagnetic CrIII rings.
- Addresses
- Dipartimento di Chimica, Università degli Studi di Firenze and UdR, INSTM di Firenze, Sesto Fiorentino, Italy.
- Autoren
- Joris van Slageren
- Roberta Sessoli
- Dante Gatteschi
- Andrew A Smith
- Madeleine Helliwell
- Richard EP Winpenny
- Andrea Cornia
- Anne-Laure Barra
- Aloysius GM Jansen
- Eva Rentschler
- Grigore A Timco
- DOI
- 10.1002/1521-3765(20020104)8:1<277::aid-chem277>3.0.co;2-d
- eISSN
- 1521-3765
- Externe Identifier
- PubMed Identifier: 11826863
- Open access
- false
- ISSN
- 0947-6539
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Sprache
- eng
- Medium
- Paginierung
- 277 - 285
- Datum der Veröffentlichung
- 2002
- Status
- Published
- Datum der Datenerfassung
- 2002
- Titel
- Magnetic anisotropy of the antiferromagnetic ring [Cr8F8Piv16].
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 8
Data source: Europe PubMed Central
- Abstract
- A new tetragonal (P42(1)2) crystalline form of [Cr8F8Piv16] (HPiv = pivalic acid, trimethyl acetic acid) is reported. The ring-shaped molecules, which are aligned in a parallel fashion in the unit cell, form almost perfectly planar, regular octagons. The interaction between the CrIII ions is antiferromagnetic (J = 12 cm(-1)) which results in a S = 0 spin ground state. The low-lying spin excited states were investigated by cantilever torque magnetometry (CTM) and high-frequency EPR (HFEPR). The compound shows hard-axis anisotropy. The axial zero-field splitting (ZFS) parameters of the first two spin excited states (S = 1 and S = 2, respectively) are D1 = 1.59(3) cm(-1) or 1.63 cm(-1) (from CTM and HFEPR, respectively) and D2 = 0.37 cm(-1) (from HFEPR). The dipolar contributions to the ZFS of the S = 1 and S = 2 spin states were calculated with the point dipolar approximation. These contributions proved to be less than the combined single-ion contributions. Angular overlap model calculations that used parameters obtained from the electronic absorption spectrum, showed that the unique axis of the single-ion ZFS is at an angle of 19.3(1) degrees with respect to the ring axis. The excellent agreement between the experimental and the theoretical results show the validity of the used methods for the analysis of the magnetic anisotropy in antiferromagnetic CrIII rings.
- Autoren
- Joris van Slageren
- Roberta Sessoli
- Dante Gatteschi
- Andrew A Smith
- Madeleine Helliwell
- Richard EP Winpenny
- Andrea Cornia
- Anne-Laure Barra
- Aloysius GM Jansen
- Eva Rentschler
- Grigore A Timco
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/11826863
- DOI
- 10.1002/1521-3765(20020104)8:1<277::aid-chem277>3.0.co;2-d
- ISSN
- 0947-6539
- Ausgabe der Veröffentlichung
- 1
- Zeitschrift
- Chemistry
- Sprache
- eng
- Country
- Germany
- Paginierung
- 277 - 285
- PII
- 10.1002/1521-3765(20020104)8:1<277::AID-CHEM277>3.0.CO;2-D
- Datum der Veröffentlichung
- 2002
- Status
- Published
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2002
- Titel
- Magnetic anisotropy of the antiferromagnetic ring [Cr8F8Piv16].
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 8
Data source: PubMed
- Beziehungen:
- Property of