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Giacomazzi L, Martin-Samos L, Richard N, Ceresoli D, Alessi A. Identification of paramagnetic centers in irradiated Sn-doped silicon dioxide by first-principles. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:215502. [PMID: 38364269 DOI: 10.1088/1361-648x/ad2a0c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/16/2024] [Indexed: 02/18/2024]
Abstract
We present a first-principles investigation of Sn paramagnetic centers in Sn-doped vitreous silica based on calculations of the electron paramagnetic resonance (EPR) parameters. The present investigation provides evidence of an extended analogy between the family of Ge paramagnetic centers in Ge-doped silica and the family of Sn paramagnetic centers in Sn-doped silica for SnO2concentrations below phase separation. We infer, also keeping into account the larger spin-orbit coupling of Sn atoms with respect to Ge atoms, that a peculiar and highly distorted three-fold coordinated Sn center (i.e. the Sn forward-oriented configuration) should give rise to an orthorhombic EPR signal of which we suggest a fingerprint in the EPR spectra recorded by Chiodiniet al(2001Phys. Rev.B64073102). Given its structural analogy with theEα'and Ge(2) centers, we here name it as the 'Sn(2) center'. Moreover, we show that the single trapped electron at a SnO4tetrahedron constitutes a paramagnetic center responsible for the orthorhombic EPR signal reported in Chiodiniet al(1998Phys. Rev.B589615), confuting the early assignment to a distorted variant of the Sn-E' center. We hence relabel the latter orthorhombic EPR signal as the 'Sn(1) center' due to its analogy to the Ge(1) center in Ge-doped silica.
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Affiliation(s)
- L Giacomazzi
- CNR-IOM - Istituto Officina dei Materiali, National Research Council of Italy, c/o SISSA Via Bonomea 265, Trieste IT-34136, Italy
| | - L Martin-Samos
- CNR-IOM - Istituto Officina dei Materiali, National Research Council of Italy, c/o SISSA Via Bonomea 265, Trieste IT-34136, Italy
| | - N Richard
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, F-91680 Bruyères-le-Châtel, France
| | - D Ceresoli
- CNR-SCITEC - Istituto di Scienze e Tecnologie Chimiche "G. Natta", National Research Council of Italy, via C. Golgi 19, Milano 20133, Italy
| | - A Alessi
- Laboratoire des Solides Irradiés (LSI), CEA/DRF/IRAMIS, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91120 Palaiseau, France
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Cai X, Majumdar S, Fortman GC, Koppaka A, Serafim L, Captain B, Temprado M, Hoff CD. Thermodynamic, Kinetic, Structural, and Computational Studies of the Ph3Sn–H, Ph3Sn–SnPh3, and Ph3Sn–Cr(CO)3C5Me5 Bond Dissociation Enthalpies. Inorg Chem 2016; 55:10751-10766. [DOI: 10.1021/acs.inorgchem.6b01978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaochen Cai
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - Subhojit Majumdar
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - George C. Fortman
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - Anjaneyulu Koppaka
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - Leonardo Serafim
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - Burjor Captain
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
| | - Manuel Temprado
- Department of Analytical Chemistry, Physical Chemistry and Chemical
Engineering, Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33,600, Madrid 28871, Spain
| | - Carl D. Hoff
- Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33124, United States
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Protchenko AV, Dange D, Blake MP, Schwarz AD, Jones C, Mountford P, Aldridge S. Oxidative Bond Formation and Reductive Bond Cleavage at Main Group Metal Centers: Reactivity of Five-Valence-Electron MX2 Radicals. J Am Chem Soc 2014; 136:10902-5. [PMID: 25036798 DOI: 10.1021/ja5062467] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrey V. Protchenko
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Deepak Dange
- School
of Chemistry, Monash University, P.O. Box 23, Melbourne, Victoria 3800, Australia
| | - Matthew P. Blake
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Andrew D. Schwarz
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Cameron Jones
- School
of Chemistry, Monash University, P.O. Box 23, Melbourne, Victoria 3800, Australia
| | - Philip Mountford
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Simon Aldridge
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
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Power PP. Persistent and stable radicals of the heavier main group elements and related species. Chem Rev 2003; 103:789-810. [PMID: 12630853 DOI: 10.1021/cr020406p] [Citation(s) in RCA: 407] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Philip P Power
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
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