Targeted replacement: systematic studies of dodecanuclear {MIII6LnIII6} coordination clusters (M = Cr, Co; Ln = Dy, Y)Electronic supplementary information (ESI) available. CCDC 1815394 and 1833047. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8dt01289j

Targeted replacement: systematic studies of dodecanuclear {MIII6LnIII6} coordination clusters (M... Three dodecanuclear 3d4f coordination clusters, [CrIII6LnIII6(3-OH)8(tbdea)6(C6H5COO)16]2H2O (Ln = Dy (1), Y (2)) and [CoIII6DyIII6(3-OH)8(nbdea)6(m-CH3C6H4COO)16]2H2O2CH3CN (3), have been synthesized under solvothermal conditions and characterized. Single-crystal X-ray diffraction analysis revealed that all three compounds possess an analogous {MIII6LnIII6} core (M = Cr, Co; Ln = Dy, Y) and dc magnetic susceptibility studies indicated that the magnetic exchange couplings between DyIII ions are dominant antiferromagnetic, while the CrIIIDyIII interactions are weakly ferromagnetic. Furthermore, the ac magnetic susceptibility measurements showed that both CrIII6DyIII6 compound 1 and CoIIi6DyIII6 compound 3 containing highly anisotropic DyIII ions displayed single-molecule magnetic (SMM) behavior with the energy barrier Ueff increasing from 12.8 K (for 1) to 20.8 K (for 3), indicating that weak 3d4f exchange couplings enhance the QTM and reduce the energy barrier. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Dalton Transactions Royal Society of Chemistry

Targeted replacement: systematic studies of dodecanuclear {MIII6LnIII6} coordination clusters (M = Cr, Co; Ln = Dy, Y)Electronic supplementary information (ESI) available. CCDC 1815394 and 1833047. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8dt01289j

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Publisher
The Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
1477-9226
eISSN
1477-9234
D.O.I.
10.1039/c8dt01289j
Publisher site
See Article on Publisher Site

Abstract

Three dodecanuclear 3d4f coordination clusters, [CrIII6LnIII6(3-OH)8(tbdea)6(C6H5COO)16]2H2O (Ln = Dy (1), Y (2)) and [CoIII6DyIII6(3-OH)8(nbdea)6(m-CH3C6H4COO)16]2H2O2CH3CN (3), have been synthesized under solvothermal conditions and characterized. Single-crystal X-ray diffraction analysis revealed that all three compounds possess an analogous {MIII6LnIII6} core (M = Cr, Co; Ln = Dy, Y) and dc magnetic susceptibility studies indicated that the magnetic exchange couplings between DyIII ions are dominant antiferromagnetic, while the CrIIIDyIII interactions are weakly ferromagnetic. Furthermore, the ac magnetic susceptibility measurements showed that both CrIII6DyIII6 compound 1 and CoIIi6DyIII6 compound 3 containing highly anisotropic DyIII ions displayed single-molecule magnetic (SMM) behavior with the energy barrier Ueff increasing from 12.8 K (for 1) to 20.8 K (for 3), indicating that weak 3d4f exchange couplings enhance the QTM and reduce the energy barrier.

Journal

Dalton TransactionsRoyal Society of Chemistry

Published: May 22, 2018

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