Molecule-based magnets: Ferro- and antiferromagnetic interactions in copper(II)-polyorganosiloxanolate clusters

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • E Rentschler
  • D Gatteschi
  • A Cornia
  • AC Fabretti
  • AL Barra
  • OI Shchegolikhina
  • AA Zhdanov
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:A1996UX98000021&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1021/ic951317g
Externe Identifier
  • Clarivate Analytics Document Solution ID: UX980
  • PubMed Identifier: 11666662
ISSN
0020-1669
Ausgabe der Veröffentlichung
15
Zeitschrift
INORGANIC CHEMISTRY
Paginierung
4427 - 4431
Datum der Veröffentlichung
1996
Status
Published
Titel
Molecule-based magnets: Ferro- and antiferromagnetic interactions in copper(II)-polyorganosiloxanolate clusters
Sub types
  • Article
Ausgabe der Zeitschrift
35

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Autoren
  • Eva Rentschler
  • Dante Gatteschi
  • Andrea Cornia
  • Antonio C Fabretti
  • Anne-Laure Barra
  • Olga I Shchegolikhina
  • Alexandr A Zhdanov
DOI
10.1021/ic951317g
eISSN
1520-510X
ISSN
0020-1669
Ausgabe der Veröffentlichung
15
Zeitschrift
Inorganic Chemistry
Sprache
en
Online publication date
1996
Paginierung
4427 - 4431
Datum der Veröffentlichung
1996
Status
Published
Herausgeber
American Chemical Society (ACS)
Herausgeber URL
http://dx.doi.org/10.1021/ic951317g
Datum der Datenerfassung
2024
Titel
Molecule-Based Magnets:  Ferro- and Antiferromagnetic Interactions in Copper(II)−Polyorganosiloxanolate Clusters
Ausgabe der Zeitschrift
35

Datenquelle: Crossref

Abstract
The magnetic behavior of the clusters [(PhSiO(2))(6)Cu(6)(O(2)SiPh)(6)].6EtOH (1), Na(4)[(PhSiO(2))(12)Cu(4)].8(n)()BuOH (2), and K(4)[(C(2)H(3)SiO(2))(12)Cu(4)].6(n)()BuOH (3) has been investigated by combined magnetic susceptibility measurements and variable-temperature EPR techniques (9.25 and 245 GHz). The six copper(II) ions in the core of 1, which approaches 6/mmm symmetry, are ferromagnetically coupled as a result of the geometry at the bridging siloxanolate oxygen atoms (Cu-O-Cu = 91.5-94.6 degrees; J = -42 cm(-)(1) with H = J S(i)().S(i)()(+1), S(7) = S(1)). The ground S = 3 spin state is split in zero field mainly due to anisotropic exchange contributions (D = 0.30 cm(-)(1)). Notably, both the magnitude and the sign of the zero-field splitting parameter have been determined from HF-EPR spectra. Large antiferromagnetic Cu-Cu interactions (J approximately 200 cm(-)(1)) and an S = 0 ground state have been detected in the tetranuclear clusters 2 and 3 as a consequence of the larger Cu-O-Cu angles. The results presented in the paper are relevant to the search for new molecule-based magnetic materials.
Addresses
  • Department of Chemistry, University of Florence, via Maragliano 75, 50144 Firenze, Italy, Department of Chemistry, University of Modena, via G. Campi 183, 41100 Modena, Italy, Laboratoire des Champs Magnetiques Intenses, CNRS, Grenoble, France, and A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), 28 Vavilov St., Moscow 117813, Russia.
Autoren
  • Eva Rentschler
  • Dante Gatteschi
  • Andrea Cornia
  • Antonio C Fabretti
  • Anne-Laure Barra
  • Olga I Shchegolikhina
  • Alexandr A Zhdanov
DOI
10.1021/ic951317g
eISSN
1520-510X
Externe Identifier
  • PubMed Identifier: 11666662
Open access
false
ISSN
0020-1669
Ausgabe der Veröffentlichung
15
Zeitschrift
Inorganic chemistry
Sprache
eng
Medium
Print
Paginierung
4427 - 4431
Datum der Veröffentlichung
1996
Status
Published
Datum der Datenerfassung
1996
Titel
Molecule-Based Magnets: Ferro- and Antiferromagnetic Interactions in Copper(II)-Polyorganosiloxanolate Clusters.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
35

Datenquelle: Europe PubMed Central

Abstract
The magnetic behavior of the clusters [(PhSiO(2))(6)Cu(6)(O(2)SiPh)(6)].6EtOH (1), Na(4)[(PhSiO(2))(12)Cu(4)].8(n)()BuOH (2), and K(4)[(C(2)H(3)SiO(2))(12)Cu(4)].6(n)()BuOH (3) has been investigated by combined magnetic susceptibility measurements and variable-temperature EPR techniques (9.25 and 245 GHz). The six copper(II) ions in the core of 1, which approaches 6/mmm symmetry, are ferromagnetically coupled as a result of the geometry at the bridging siloxanolate oxygen atoms (Cu-O-Cu = 91.5-94.6 degrees; J = -42 cm(-)(1) with H = J S(i)().S(i)()(+1), S(7) = S(1)). The ground S = 3 spin state is split in zero field mainly due to anisotropic exchange contributions (D = 0.30 cm(-)(1)). Notably, both the magnitude and the sign of the zero-field splitting parameter have been determined from HF-EPR spectra. Large antiferromagnetic Cu-Cu interactions (J approximately 200 cm(-)(1)) and an S = 0 ground state have been detected in the tetranuclear clusters 2 and 3 as a consequence of the larger Cu-O-Cu angles. The results presented in the paper are relevant to the search for new molecule-based magnetic materials.
Autoren
  • Eva Rentschler
  • Dante Gatteschi
  • Andrea Cornia
  • Antonio C Fabretti
  • Anne-Laure Barra
  • Olga I Shchegolikhina
  • Alexandr A Zhdanov
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/11666662
DOI
10.1021/ic951317g
eISSN
1520-510X
Ausgabe der Veröffentlichung
15
Zeitschrift
Inorg Chem
Sprache
eng
Country
United States
Paginierung
4427 - 4431
PII
ic951317g
Datum der Veröffentlichung
1996
Status
Published
Titel
Molecule-Based Magnets: Ferro- and Antiferromagnetic Interactions in Copper(II)-Polyorganosiloxanolate Clusters.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
35

Datenquelle: PubMed

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