Unquenched orbital angular momentum in quasi-linear two-coordinate transition metal complexes featuring sterically bulky carbazole ligands
A series of two-coordinate TM compounds, M(<sup>(<i>t</i>bu)<sub>2</sub></sup>carb<sup>(Ph<sub>2</sub>CH)<sub>2</sub></sup>) (M = Mn, Fe, Co; <sup>(<i>t</i>bu)<sub>2</sub></sup>carb<sup>(Ph<sub>2</sub>CH)<sub>2</sub></sup> = 1,8-bis(diphenylmethyl)-3,6-ditertbutylcarbazolide). Each of the complexes displays a bent geometry with a N-M-N bond angle ranging from 140.21(10)° to 144.37(15)°. Despite the non-linear geometry, M(<sup>(<i>t</i>bu)<sub>2</sub></sup>carb<sup>(Ph<sub>2</sub>CH)<sub>2</sub></sup>)<sub>2</sub> (M = Fe, Co) have substantial spin-orbit coupling, and Co(<sup>(<i>t</i>bu)<sub>2</sub></sup>carb<sup>(Ph<sub>2</sub>CH)<sub>2</sub></sup>)<sub>2</sub> displays slow magnetic relaxation with an <i>U</i><sub>eff</sub> value of 30.2 K and a large negative <i>D</i> of -169 cm<sup>-1</sup>.
Authors
- Brian S. Dolinar (ORCID: https://orcid.org/0000-0002-8228-4590)
- James A. Palmer (ORCID: https://orcid.org/0000-0003-0656-9110)
- Sadia Noor (ORCID: https://orcid.org/0000-0002-4709-0029)
- Samantha Stegman (ORCID: https://orcid.org/0000-0003-0276-009X)
Institutions
- West Virginia University (US)
- University of Wisconsin–Madison (US)
- West Virginia University Hospitals (US)
- Texas A&M University (US)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt00782h
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00