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Twists to the spin structure of the Ln9-diabolo motif exemplified in two {Zn2Ln2}[Ln9]{Zn2} coordination clusters

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posted on 2023-06-09, 16:33 authored by Kieran Griffiths, Irina A Kühne, Graham J Tizzard, Simon J Coles, George KostakisGeorge Kostakis, Annie K Powell
Two pentadecanuclear Zn4Ln11 [with Ln = Gd(1) or Dy(2)] coordination clusters, best formulated as {Zn2Ln2}[Ln9]{Zn2}, are presented. The central {Ln9} diabolo core has a {Zn2Ln2} handle motif pulling at two outer Ln ions of the central core via two {ZnLn} units, which also invest the system with C2 point symmetry. The resulting cluster motif is supported on two Zn “feet”, corresponding to the {Zn2} unit in the formula. A thorough investigation of the magnetic properties in the light of the properties of previously reported {Ln9} diabolo compounds was undertaken. Up to now, the spin structure of such diabolo motifs usually proves ambiguous. Our magnetic studies show that the orientation of the central spin in the {Gd9} diabolo plays a decisive role. In stabilizing the core by attachment of the {Zn}2+ “feet” and using the C2 symmetry related {ZnGd}5+ handles to influence the spin direction of the central Gd of the {Gd9} diabolo we can understand why the “naked” {Gd9} diabolo shows ambiguous spin structure. This then allowed us to elucidate the single molecule magnetic (SMM) properties of the Dy based compound 2 through disentangling the magnetic properties of the isostructural Gd based compound 1.

Funding

Defect dicubane 3d/Dy(III) Coordination Clusters: Heading for materials displaying catalytic properties; G1632; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M023834/1

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Inorganic Chemistry

ISSN

0020-1669

Publisher

American Chemical Society

Issue

4

Volume

58

Page range

2483-2490

Department affiliated with

  • Biochemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-01-16

First Open Access (FOA) Date

2020-01-31

First Compliant Deposit (FCD) Date

2019-01-15

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