Noninnocence Driven Superexchange Within a Ti <sup>2+</sup> /Ti <sup>4+</sup> Mixed Valence Complex
An example of a molecular Ti<sup>2+</sup>/Ti<sup>4+</sup> complex is reported, whereby the metal centers are bridged by the redox-active tetrakis(imino)pyracene ligand (TIP). Spectroscopic, electrochemical, electronic structure calculations, and magnetic analyses were used to evaluate the degree and mechanism of electronic communication and magnetic exchange between the two metal centers. It was found that the complex is best described as a borderline Class II/III mixed valence complex, whereby the population of thermally accessible, close-lying excited states gives rise to extremely strong antiferromagnetic coupling (|<i>J</i>|> 250 cm<sup>-1</sup> at ∼11.3 Å).
Authors
- Julien A. Panetier (ORCID: https://orcid.org/0000-0003-4905-8396)
- Elizabeth A. Tonsel-White (ORCID: https://orcid.org/0000-0001-7030-4892)
- Colby Bell
- Kensha Marie Clark (ORCID: https://orcid.org/0000-0001-8048-6124)
- S. Sharma (ORCID: https://orcid.org/0000-0002-4710-9615)
- E. M. Smith (ORCID: https://orcid.org/0000-0002-2054-3585)
- Curtis E. Moore (ORCID: https://orcid.org/0000-0002-3311-7155)
Institutions
- Binghamton University (US)
- University of Mississippi (US)
- The Ohio State University (US)
- University of Memphis (US)
- McMaster University (CA)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2026-01-21
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c04747
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00