Large magnetic anisotropy of Ni(<scp>ii</scp>) polynuclear complexes confirmed by very unusual HFEPR spectra: relaxation behaviour of six-coordinate Ni(<scp>ii</scp>) dimers
Two Ni(II) complexes containing a 2,6-bis(pyrazol-1-yl)pyridine (bpp) ligand and pseudohalide linkers ([Ni<sub>2</sub>(bpp)<sub>2</sub>(μ1,1-N<sub>3</sub>)<sub>2</sub>(N<sub>3</sub>)<sub>2</sub>]·2H<sub>2</sub>O (1) and [Ni(bpp)(dca)(H<sub>2</sub>O)]<sub><i>n</i></sub>·<i>n</i>(dca) (dca - dicaynamide) (2)) show large magnetic anisotropy confirmed by HFEPR spectra (very unusual for 2) with a negative D value. The AC susceptibility reveals a field supported slow magnetic relaxation for 1 with three relaxation channels.
Authors
- Roman Boča (ORCID: https://orcid.org/0000-0003-0222-9434)
- Anna Świtlicka (ORCID: https://orcid.org/0000-0001-8192-5619)
- Dariusz C. Bieńko (ORCID: https://orcid.org/0000-0002-8717-7065)
- Cyril Rajnák (ORCID: https://orcid.org/0000-0003-2173-6220)
- Ján Titiš (ORCID: https://orcid.org/0000-0003-2530-7722)
- Alina Bieńko (ORCID: https://orcid.org/0000-0002-2714-3197)
- Andrew Ozarowski
- Mateusz Penkala (ORCID: https://orcid.org/0000-0001-8949-0322)
- Jacek Sawka (ORCID: https://orcid.org/0009-0000-0692-259X)
Institutions
- Florida State University (US)
- Wrocław University of Science and Technology (PL)
- University of Wrocław (PL)
- National High Magnetic Field Laboratory (US)
- University of Ss. Cyril and Methodius in Trnava (SK)
- AGH University of Krakow (PL)
- Comenius University Bratislava (SK)
- University of Silesia in Katowice (PL)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt01264c
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- European Commission
- Vedecká Grantová Agentúra MŠVVaŠ SR a SAV