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Stepwise investigation of the influences of steric groups versus counter ions to target Cu/Dy complexes

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posted on 2023-06-09, 07:23 authored by Irina A Kuehne, Kieran Griffiths, Amy-Jayne Hutchings, Oliver P E Townrow, Andreas Eichhoeffer, Christopher E Anson, George KostakisGeorge Kostakis, Annie K Powell
From an investigation of varying the steric bulk of a flexible ligand, we have produced a family of structures using similar reaction conditions. Even small changes from a hydrogen atom to a methyl to an ethyl group on the ligand influences the structural outcome, which can also be steered by the nature of the metal source. We employed Schiff base ligands by combining o-vanillin and three different 2-amino-1,3-propandiol units, leading to H3L1 (R=hydrogen), H3L2 (R=methyl) and H3L3 (R=ethyl). The differing nuclearities of the three clusters, 1 to 3, originate mainly from the steric influence, while this effect is not seen in complex 4 to 6, where the general butterfly motif is maintained. We present here the synthesis, crystal structures and magnetic properties of six new CuII-LnIII complexes, providing valuable insight into future synthetic directions. The topological part includes a table of all CuII-DyIII complexes with nuclearities higher than four and their topological motif. The investigation of the magnetic behaviors reveal that all six complexes show frequency dependent signals in the out-of phase ac susceptibility, which is indicative for SMM behavior.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Crystal Growth & Design

ISSN

1528-7483

Publisher

American Chemical Society

Issue

10

Volume

17

Page range

5178-5190

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-07-24

First Open Access (FOA) Date

2018-07-12

First Compliant Deposit (FCD) Date

2017-07-24

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