Chiral effects at the metal center in Fe(III) spin crossover coordination salts
Evidence of chirality was observed at the Fe metal center in Fe(III) spin crossover coordination salts [Fe(qsal)<sub>2</sub>][Ni(dmit)<sub>2</sub>] and [Fe(qsal)<sub>2</sub>](TCNQ)<sub>2</sub>from x-ray absorption (XAS) spectroscopy at the Fe 2p<sub>3/2</sub>core threshold. Based on the circularly polarized XAS data, the x-ray natural circular dichroism for [Fe(qsal)<sub>2</sub>][Ni(dmit)<sub>2</sub>] and [Fe(qsal)<sub>2</sub>](TCNQ)<sub>2</sub>is far stronger than seen for [Fe(qsal)<sub>2</sub>]Cl suggesting this natural circular dichroism signature is a ligand effect rather than a result of just a loss of octahedral symmetry on the Fe core. The larger the chiral effects in the Fe 2p core to bound XAS, the greater the perturbation of the Fe 2p<sub>3/2</sub>to 2p<sub>1/2</sub>spin-orbit splitting seen in the XAS spectra.
Authors
- David A. Shapiro (ORCID: https://orcid.org/0000-0002-4186-6017)
- Gauthami Viswan
- Rebecca Y. Lai (ORCID: https://orcid.org/0000-0002-1732-9481)
- P. A. Dowben (ORCID: https://orcid.org/0000-0002-2198-4710)
- Kayleigh A. McElveen (ORCID: https://orcid.org/0000-0002-1030-2913)
- Esha Mishra (ORCID: https://orcid.org/0000-0002-8317-9370)
- Wai Kiat Chin (ORCID: https://orcid.org/0000-0002-1840-0825)
- Alpha T. N’Diaye (ORCID: https://orcid.org/0000-0001-9429-9776)
- M. Zaid Zaz (ORCID: https://orcid.org/0000-0001-7849-4715)
- Arjun Subedi (ORCID: https://orcid.org/0000-0002-7581-8144)
- Binny Tamang
Institutions
- Berry College (US)
- University of Nebraska–Lincoln (US)
- Lawrence Berkeley National Laboratory (US)
Publication Details
- Journal
- Journal of Physics Condensed Matter
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1088/1361-648x/ada338
- Citations
- 1
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.12
Funders
- National Science Foundation