Jump to main content
Jump to site search

Issue 32, 2017
Previous Article Next Article

A series of six-membered lanthanide rings based on 2,2-bis(hydroxymethyl)-2,2′,2″-nitrilotriethanol: synthesis, crystal structures and magnetic properties

Author affiliations

Abstract

By utilizing a solvothermal method, a series of six-membered cyclic lanthanide(III) clusters, {Gd6(H3L)6(benzoate)6}·2H2O·C7H8 (1), {Tb6(H3L)6(benzoate)6}·2H2O·C7H8 (2) and {Dy6(H3L)6(benzoate)6}·2H2O (3), have been constructed with the pentol ligand, 2,2-bis(hydroxymethyl)-2,2′,2″-nitrilotriethanol (H5L). Similar hexa-nuclear ring structures were observed in each of the crystal structures. In addition, magnetization studies indicated that Gd6 displays large magnetic entropy changes in low temperature regions. What is particularly interesting about this ring is the presence of slow magnetic relaxation behavior under a zero dc field, indicating a non-magnetic ground state with a net toroidal magnetic moment. Compared to the other reported Dy6 clusters, modulation of the ligand fields, the presence of amine coordinating sites and the subsequent electron density of the Dy centers along with the utilized pentol ligand might be indeed responsible for the improved barrier to magnetic relaxation.

Graphical abstract: A series of six-membered lanthanide rings based on 2,2-bis(hydroxymethyl)-2,2′,2″-nitrilotriethanol: synthesis, crystal structures and magnetic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 07 Jun 2017, accepted on 14 Jul 2017 and first published on 17 Jul 2017


Article type: Paper
DOI: 10.1039/C7CE01063J
Citation: CrystEngComm, 2017,19, 4807-4814
  •   Request permissions

    A series of six-membered lanthanide rings based on 2,2-bis(hydroxymethyl)-2,2′,2″-nitrilotriethanol: synthesis, crystal structures and magnetic properties

    P. Hu, L. Yin, N. Mao, F. Yu, B. Li, Z. Wang and T. Zhang, CrystEngComm, 2017, 19, 4807
    DOI: 10.1039/C7CE01063J

Search articles by author

Spotlight

Advertisements