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Homuth PA, McNeely J, Doerrer LH. Extra-long C C single bonds via negative hyperconjugation in perfluoropinacolate complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Petit J, Saffon-Merceron N, Magna L, Mézailles N. Synthesis of L2Ni(ORF)2 (RF = C(CF3)3) Complexes and Their Reactivity in Ethylene Oligomerization. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julien Petit
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR 5069 CNRS, Université Paul Sabatier, 118 Route de Narbonne; 31062 Toulouse, France
- IFP Energies Nouvelles Rond-point de l’échangeur de Solaize, BP3, 69360 Solaize, France
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse ICT − FR2599, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France
| | - Lionel Magna
- IFP Energies Nouvelles Rond-point de l’échangeur de Solaize, BP3, 69360 Solaize, France
| | - Nicolas Mézailles
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR 5069 CNRS, Université Paul Sabatier, 118 Route de Narbonne; 31062 Toulouse, France
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Kotyk CM, Weber JE, Hyre AS, McNeely J, Monteiro JHSK, Domin M, Balaich GJ, Rheingold AL, de Bettencourt-Dias A, Doerrer LH. Luminescence of Lanthanide Complexes with Perfluorinated Alkoxide Ligands. Inorg Chem 2020; 59:9807-9823. [PMID: 32614596 DOI: 10.1021/acs.inorgchem.0c00782] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Four groups of rare-earth complexes, comprising 11 new compounds, with fluorinated O-donor ligands ([K(THF)6][Ln(OC4F9)4(THF)2] (1-Ln; Ln = Ce, Nd), [K](THF)x[Ln(OC4F9)4(THF)y] (2-Ln; Ln = Eu, Gd, Dy), [K(THF)2][Ln(pinF)2(THF)3] (3-Ln; Ln = Ce, Nd), and [K(THF)2][Ln(pinF)2(THF)2] (4-Ln; Ln = Eu, Gd, Dy, Y) have been synthesized and characterized. Single-crystal X-ray diffraction data were collected for all compounds except 2-Ln. Species 1-Ln, 3-Ln, and 4-Ln are uncommon examples of six-coordinate (Eu, Gd, Dy, and Y) and seven-coordinate (Ce and Nd) LnIII centers in all-O-donor environments. Species 1-Ln, 2-Ln, 3-Ln, and 4-Ln are all luminescent (except where Ln = Gd and Y), with the solid-state emission of 1-Ce being exceptionally blue-shifted for a Ce complex. The emission spectra of the six Nd, Eu, and Dy complexes do not show large differences based on the ligand and are generally consistent with the well-known free-ion spectra. Time-dependent density functional theory results show that 1-Ce and 3-Ce undergo allowed 5f → 4d excitations, consistent with luminescence lifetime measurements in the nanosecond range. Eu-containing 2-Eu and 4-Eu, however, were found to have luminescence lifetimes in the millisecond range, indicating phosphorescence rather than fluorescence. The performance of a pair of multireference models for prediction of the Ln = Nd, Eu, and Dy absorption spectra was assessed. It was found that spectroscopy-oriented configuration interaction as applied to a simplified model in which the free-ion lanthanide was embedded in ligand-centered Löwdin point charges performed as well (Nd) or better (Eu and Dy) than canonical NEVPT2 calculations, when the ligand orbitals were included in the treatment.
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Affiliation(s)
- Christopher M Kotyk
- Department of Chemistry, Wheaton College, Norton, Massachusetts 02766, United States
| | - Jeremy E Weber
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Ariel S Hyre
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - James McNeely
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Jorge H S K Monteiro
- Department of Chemistry, Humboldt State University, Arcata, California 95521, United States
| | - Marek Domin
- Merkert Chemistry Center, Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Gary J Balaich
- Department of Chemistry, United States Air Force Academy, United States Air Force Academy, Colorado 80840, United States
| | - Arnold L Rheingold
- Department of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| | | | - Linda H Doerrer
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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