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Mazej Z. Fluoride ion donor ability of binary fluorides towards the Lewis acids AsF5 and SbF5. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Hall GB, Andersen A, Washton NM, Chatterjee S, Levitskaia TG. Theoretical Modeling of 99Tc NMR Chemical Shifts. Inorg Chem 2016; 55:8341-7. [DOI: 10.1021/acs.inorgchem.6b00458] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriel B. Hall
- Energy
and Environment Directorate and ‡Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Amity Andersen
- Energy
and Environment Directorate and ‡Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Nancy M. Washton
- Energy
and Environment Directorate and ‡Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Sayandev Chatterjee
- Energy
and Environment Directorate and ‡Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Tatiana G. Levitskaia
- Energy
and Environment Directorate and ‡Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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Wilson AV, Nguyen T, Brosi F, Wang X, Andrews L, Riedel S, Bridgeman AJ, Young NA. A Matrix Isolation and Computational Study of Molecular Palladium Fluorides: Does PdF6 Exist? Inorg Chem 2016; 55:1108-23. [DOI: 10.1021/acs.inorgchem.5b02273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antony V. Wilson
- Department of Chemistry, The University of Hull, Kingston upon Hull HU6 7RX, U.K
| | - Timothy Nguyen
- School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Felix Brosi
- Institut
für Chemie und Biochemie−Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, D-14195 Berlin, Germany
| | - Xuefeng Wang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Lester Andrews
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Sebastian Riedel
- Institut
für Chemie und Biochemie−Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, D-14195 Berlin, Germany
- Institut für Anorganische und Analytische
Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse
21, D-79104 Freiburg
im Breisgau, Germany
| | | | - Nigel A. Young
- Department of Chemistry, The University of Hull, Kingston upon Hull HU6 7RX, U.K
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Brosi F, Schlöder T, Schmidt A, Beckers H, Riedel S. A combined quantum-chemical and matrix-isolation study on molecular manganese fluorides. Dalton Trans 2016; 45:5038-44. [DOI: 10.1039/c5dt04827c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular manganese fluorides were studied in solid neon, argon and fluorine using IR spectroscopy and quantum-chemical calculations at DFT and CCSD(T) levels.
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Affiliation(s)
- Felix Brosi
- Institut für Chemie und Biochemie - Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Tobias Schlöder
- Institut für Chemie und Biochemie - Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Alexei Schmidt
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- D-79104 Freiburg i. Br
- Germany
| | - Helmut Beckers
- Institut für Chemie und Biochemie - Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Sebastian Riedel
- Institut für Chemie und Biochemie - Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
- Institut für Anorganische und Analytische Chemie
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Theilacker K, Schlegel HB, Kaupp M, Schwerdtfeger P. Relativistic and Solvation Effects on the Stability of Gold(III) Halides in Aqueous Solution. Inorg Chem 2015; 54:9869-75. [PMID: 26421633 DOI: 10.1021/acs.inorgchem.5b01632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The redox stability of gold halide complexes in aqueous solution has been examined quantum-chemically by a systematic comparison of scalar- and nonrelativistic pseudopotential calculations, using both COSMO and D-COSMO-RS solvent models for water. After a computational benchmarking of density-functional methods against CCSD(T) results for the gas phase decomposition AuX4(-) → AuX2(-) + X2, B3LYP calculations have been used to establish solvent contributions. While relativity clearly enhances the stability of AuX4(-) (X = F, Cl, Br, I) complexes against X2 elimination, solvation favors the lower oxidation state. Solvation and relativity are nonadditive, due to the relativistic reduction of bond polarity. At scalar relativistic D-COSMO-RS level, the reaction AuX4(-) ⇌ AuX2(-) + X2 is computed to be endergonic, except for X = I, where it is slightly exergonic. Under the chosen conditions, partial hydrolysis of AuCl4(-) to AuCl3OH(-) is exergonic. The latter complex in turn is stable against Cl2 elimination. The disproportionation 3 AuCl2(-) ⇌ AuCl4(-) + 2 Au(s) + 2 Cl(-) is clearly exergonic. All of the computed reaction energies at scalar relativistic D-COSMO-RS level agree well with the observed speciation in dilute pH-neutral solutions at ambient temperatures.
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Affiliation(s)
- Kolja Theilacker
- Technische Universität Berlin , Institut für Chemie, Theoretische Chemie, Sekr. C7, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - H Bernhard Schlegel
- Department of Chemistry, Wayne State University , 5101 Cass Av., Detroit, Michigan 48202-3489, United States
| | - Martin Kaupp
- Technische Universität Berlin , Institut für Chemie, Theoretische Chemie, Sekr. C7, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Peter Schwerdtfeger
- New Zealand Institute for Advanced Study, Massey University Auckland , Private Bag 102 904, North Shore MSC, 0745 Auckland, New Zealand
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Poineau F, Johnstone EV, Czerwinski KR, Sattelberger AP. Recent advances in technetium halide chemistry. Acc Chem Res 2014; 47:624-32. [PMID: 24393028 DOI: 10.1021/ar400225b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Transition metal binary halides are fundamental compounds, and the study of their structure, bonding, and other properties gives chemists a better understanding of physicochemical trends across the periodic table. One transition metal whose halide chemistry is underdeveloped is technetium, the lightest radioelement. For half a century, the halide chemistry of technetium has been defined by three compounds: TcF6, TcF5, and TcCl4. The absence of Tc binary bromides and iodides in the literature was surprising considering the existence of such compounds for all of the elements surrounding technetium. The common synthetic routes that scientists use to obtain binary halides of the neighboring elements, such as sealed tube reactions between elements and flowing gas reactions between a molecular complex and HX gas (X = Cl, Br, or I), had not been reported for technetium. In this Account, we discuss how we used these routes to revisit the halide chemistry of technetium. We report seven new phases: TcBr4, TcBr3, α/β-TcCl3, α/β-TcCl2, and TcI3. Technetium tetrachloride and tetrabromide are isostructural to PtX4 (X = Cl or Br) and consist of infinite chains of edge-sharing TcX6 octahedra. Trivalent technetium halides are isostructural to ruthenium and molybdenum (β-TcCl3, TcBr3, and TcI3) and to rhenium (α-TcCl3). Technetium tribromide and triiodide exhibit the TiI3 structure-type and consist of infinite chains of face-sharing TcX6 (X = Br or I) octahedra. Concerning the trichlorides, β-TcCl3 crystallizes with the AlCl3 structure-type and consists of infinite layers of edge-sharing TcCl6 octahedra, while α-TcCl3 consists of infinite layers of Tc3Cl9 units. Both phases of technetium dichloride exhibit new structure-types that consist of infinite chains of [Tc2Cl8] units. For the technetium binary halides, we studied the metal-metal interaction by theoretical methods and magnetic measurements. The change of the electronic configuration of the metal atom from d(3) (Tc(IV)) to d(5) (Tc(II)) is accompanied by the formation of metal-metal bonds in the coordination polyhedra. There is no metal-metal interaction in TcX4, a Tc═Tc double bond is present in α/β-TcCl3, and a Tc≡Tc triple bond is present in α/β-TcCl2. We investigated the thermal behavior of these binary halides in sealed tubes under vacuum at elevated temperature. Technetium tetrachloride decomposes stepwise to α-TcCl3 and β-TcCl2 at 450 °C, while β-TcCl3 converts to α-TcCl3 at 280 °C. The technetium dichlorides disproportionate to Tc metal and TcCl4 above ∼600 °C. At 450 °C in a sealed Pyrex tube, TcBr3 decomposes to Na{[Tc6Br12]2Br}, while TcI3 decomposes to Tc metal. We have used technetium tribromide in the preparation of new divalent complexes; we expect that the other halides will also serve as starting materials for the synthesis of new compounds (e.g., complexes with a Tc3(9+) core, divalent iodide complexes, binary carbides, nitrides, and phosphides, etc.). Technetium halides may also find applications in the nuclear fuel cycle; their thermal properties could be utilized in separation processes using halide volatility. In summary, we hope that these new insights on technetium binary halides will contribute to a better understanding of the chemistry of this fascinating element.
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Affiliation(s)
- Frederic Poineau
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | - Erik V. Johnstone
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | - Kenneth R. Czerwinski
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | - Alfred P. Sattelberger
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
- Energy Engineering and Systems Analysis Directorate, Argonne National Laboratory, Argonne, Illinois 60439, United States
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Balasekaran SM, Molski M, Spandl J, Hagenbach A, Alberto R, Abram U. Hexafluoridotechnetate(IV) Revisited. Inorg Chem 2013; 52:7094-9. [DOI: 10.1021/ic400775e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Matthias Molski
- Freie Universität Berlin, Institute
of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Johann Spandl
- Freie Universität Berlin, Institute
of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Adelheid Hagenbach
- Freie Universität Berlin, Institute
of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Roger Alberto
- University of Zurich, Institute
of Inorganic Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Ulrich Abram
- Freie Universität Berlin, Institute
of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
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Qiu L, Lin JG, Gong XD, Cheng W, Luo SN. Substituent Effect on the Structure and Biological Property of99mTc-Labeled Diphosphonates: Theoretical Studies. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.12.4084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Demoin DW, Li Y, Jurisson SS, Deakyne CA. Method and Basis Set Analysis of Oxorhenium(V) Complexes for Theoretical Calculations. COMPUT THEOR CHEM 2012; 997:34-41. [PMID: 23087847 DOI: 10.1016/j.comptc.2012.07.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A variety of method and basis set combinations has been evaluated for monooxorhenium(V) complexes with N, O, P, S, Cl, and Se donor atoms. The geometries and energies obtained are compared to both high-level computations and literature structures. These calculations show that the PBE0 method outperforms the B3LYP method with respect to both structure and energetics. The combination of 6-31G** basis set on the nonmetal atoms and LANL2TZ effective core potential on the rhenium center gives reliable equilibrium structures with minimal computational resources for both model and literature compounds. Single-point energy calculations at the PBE0/LANL2TZ,6-311+G* level of theory are recommended for energetics.
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Affiliation(s)
- Dustin Wayne Demoin
- Department of Chemistry, University of Missouri-Columbia, 601 S. College Avenue, Columbia, Missouri 65211-7600
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Craciun R, Long RT, Dixon DA, Christe KO. Electron Affinities, Fluoride Affinities, and Heats of Formation of the Second Row Transition Metal Hexafluorides: MF6 (M = Mo, Tc, Ru, Rh, Pd, Ag). J Phys Chem A 2010; 114:7571-82. [DOI: 10.1021/jp1022949] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Raluca Craciun
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35487-0336
| | - Rebecca T. Long
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35487-0336
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35487-0336
| | - Karl O. Christe
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, University Park, Los Angeles, California 90089
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