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Mazej Z, Goreshnik E. Crystal Structures of Xenon(VI) Salts: XeF 5Ni(AsF 6) 3, XeF 5AF 6 (A = Nb, Ta, Ru, Rh, Ir, Pt, Au), and XeF 5A 2F 11 (A = Nb, Ta). Molecules 2023; 28:molecules28083370. [PMID: 37110603 PMCID: PMC10143524 DOI: 10.3390/molecules28083370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/07/2023] [Accepted: 04/09/2023] [Indexed: 04/29/2023] Open
Abstract
Experiments on the preparation of the new mixed cations XeF5M(AF6)3 (M = Cu, Ni; A = Cr, Nb, Ta, Ru, Rh, Re, Os, Ir, Pt, Au, As), XeF5M(SbF6)3 (M = Sn, Pb), and XeF5M(BF4)x(SbF6)3-x (x = 1, 2, 3; M = Co, Mn, Ni, Zn) salts were successful only in the preparation of XeF5Ni(AsF6)3. In other cases, mixtures of different products, mostly XeF5AF6 and XeF5A2F11 salts, were obtained. The crystal structures of XeF5Ni(AsF6)3, XeF5TaF6, XeF5RhF6, XeF5IrF6, XeF5Nb2F11, XeF5Ta2F11, and [Ni(XeF2)2](IrF6)2 were determined for the first time on single crystals at 150 K by X-ray diffraction. The crystal structures of XeF5NbF6, XeF5PtF6, XeF5RuF6, XeF5AuF6, and (Xe2F11)2(NiF6) were redetermined by the same method at 150 K. The crystal structure of XeF5RhF6 represents a new structural type in the family of XeF5AF6 salts, which crystallize in four different structural types. The XeF5A2F11 salts (M = Nb, Ta) are not isotypic and both represent a new structure type. They consist of [XeF5]+ cations and dimeric [A2F11]- anions. The crystal structure of [Ni(XeF2)2](IrF6)2 is a first example of a coordination compound in which XeF2 is coordinated to the Ni2+ cation.
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Affiliation(s)
- Zoran Mazej
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova Cesta 39, SI-1000 Ljubljana, Slovenia
| | - Evgeny Goreshnik
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova Cesta 39, SI-1000 Ljubljana, Slovenia
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Graubner T, Karttunen AJ, Kraus F. A Computational Study on Closed-Shell Molecular Hexafluorides MF 6 (M=S, Se, Te, Po, Xe, Rn, Cr, Mo, W, U) - Molecular Structure, Anharmonic Frequency Calculations, and Prediction of the NdF 6 Molecule. Chemphyschem 2023; 24:e202200903. [PMID: 36688413 DOI: 10.1002/cphc.202200903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/24/2023]
Abstract
Quantum chemical methods were used to study the molecular structure and anharmonic IR spectra of the experimentally known closed-shell molecular hexafluorides MF6 (M=S, Se, Te, Xe, Mo, W, U). First, the molecular structures and harmonic frequencies were investigated using Density Functional Theory (DFT) with all-electron basis sets and explicitly considering the influence of spin-orbit coupling. Second, anharmonic frequencies and IR intensities were calculated with the CCSD(T) coupled cluster method and compared, where available, with IR spectra recorded by us. These comparisons showed satisfactory results. The anharmonic IR spectra provide means for identifying experimentally too little studied or unknown MF6 molecules with M=Cr, Po, Rn. To the best of our knowledge, we predict the NdF6 molecule for the first time and show it to be a true local minimum on the potential energy surface. We used intrinsic bond orbital (IBO) analyses to characterize the bonding situation in comparison with the UF6 molecule.
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Affiliation(s)
- Tim Graubner
- Fluorchemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Antti J Karttunen
- Department of Chemistry and Materials Science, Aalto University, 00076, Espoo, Finland
| | - Florian Kraus
- Fluorchemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
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Voßnacker P, Wüst A, Müller C, Kleoff M, Riedel S. Synthesis of a Hexachloro Sulfate(IV) Dianion Enabled by Polychloride Chemistry. Angew Chem Int Ed Engl 2022; 61:e202209684. [PMID: 35924885 PMCID: PMC9805220 DOI: 10.1002/anie.202209684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Indexed: 01/09/2023]
Abstract
The preparation and structural characterization of [NEt3 Me]2 [SCl6 ] is described, which is the first example of a [SCl6 ]2- dianion and of a halosulfate anion of the type [Sx Xy ]z- in general. This dianion belongs to the group of 14-valence electron AB6 E systems and forms an octahedral structure in the solid-state. Interestingly, co-crystallization with CH2 Cl2 affords [NEt3 Me]2 [SCl6 ]⋅4 CH2 Cl2 containing [SCl6 ]2- dianions with C4v symmetry. As suggested by quantum-chemical calculations, the distortion of the structure is not caused by a stereochemically active lone pair but by enhanced hydrogen bonding interactions with CH2 Cl2 . At elevated temperatures, [NEt3 Me]2 [SCl6 ] decomposes to various sulfur chlorine compounds as shown by Raman spectroscopy. Cooling back to room temperature results in the selective formation of [NEt3 Me]2 [SCl6 ] which is comparable to the well-studied SCl4 .
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Affiliation(s)
- Patrick Voßnacker
- Institut für Chemie und Biochemie—Anorganische ChemieFreie Universität BerlinFabeckstraße 34/3614195BerlinGermany
| | - Alisa Wüst
- Institut für Chemie und Biochemie—Anorganische ChemieFreie Universität BerlinFabeckstraße 34/3614195BerlinGermany
| | - Carsten Müller
- Institut für Chemie und Biochemie—Anorganische ChemieFreie Universität BerlinFabeckstraße 34/3614195BerlinGermany
| | - Merlin Kleoff
- Institut für Chemie und Biochemie—Anorganische ChemieFreie Universität BerlinFabeckstraße 34/3614195BerlinGermany
| | - Sebastian Riedel
- Institut für Chemie und Biochemie—Anorganische ChemieFreie Universität BerlinFabeckstraße 34/3614195BerlinGermany
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Voßnacker P, Wüst A, Müller C, Kleoff M, Hasenstab-Riedel S. Synthesis of a Hexachloro Sulfate(iv) Dianion Enabled by Polychloride Chemistry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Alisa Wüst
- Freie Universitat Berlin Institut für Chemie und Biochemie GERMANY
| | - Carsten Müller
- Freie Universitat Berlin Institut für Chemie und Biochemie GERMANY
| | - Merlin Kleoff
- Freie Universitat Berlin Institut für Chemie und Biochemie GERMANY
| | - Sebastian Hasenstab-Riedel
- FU Berlin: Freie Universitat Berlin Institut fuer Chemie und Biochemie - Anorganische Chemie Fabeckstrasse 34-36 14195 Berlin GERMANY
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Cong F, Cheng J, Cho HG, Huang T, Wang X, Andrews L. M←NCCH 3, M-η 2-(NC)-CH 3, and CN-M-CH 3 Prepared by Reactions of Ce, Sm, Eu, and Lu Atoms with Acetonitrile: Matrix Infrared Spectra and Theoretical Calculations. Inorg Chem 2021; 60:17649-17656. [PMID: 34747602 DOI: 10.1021/acs.inorgchem.1c02232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of laser-ablated Ce, Sm, Eu, and Lu atoms with acetonitrile were studied by matrix infrared spectra in a neon matrix, and M←NCCH3, M-η2-(NC)-CH3, and CN-M-CH3 were identified with isotopic substitution and quantum chemical calculations. The major product is the insertion complex (CN-M-CH3), while the end-on and side-on complexes (M←NCCH3 and M-η2-(NC)-CH3) are also trapped in the matrix. The CCN antisymmetric stretching mode for Ce-η2-(NC)-CH3 was observed at 1536.9 cm-1, which is much lower than the same modes observed for other lanthanides. NBO analysis reveals that Ce exhibits a remarkable 4f-orbital contribution in bonding to N and to C, reconfirming an active 4f-orbital contribution of cerium in bonding in the side-on complex, while the 4f contributions of Sm and Eu to the M-N and M-C bonds are much lower and the 4f orbital of Lu is not involved in bonding.
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Affiliation(s)
- Fei Cong
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Juanjuan Cheng
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Han-Gook Cho
- Department of Chemistry, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012 South Korea
| | - Tengfei Huang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Xuefeng Wang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Lester Andrews
- Department of Chemistry, University of Virginia, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
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Wang X, Li B, Li Y, Wang H, Ni Y, Wang H. The influence of monomer deformation on triel and tetrel bonds between TrR3/TR4 (Tr = Al, Ga, In; T = Si, Ge, Sn) and N-base (N-base = HCN, NH3, CN−). COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Paschoal DFS, Dos Santos HF. Predicting the structure and NMR coupling constant 1J( 129Xe- 19F) of XeF 6 using quantum mechanics methods. Phys Chem Chem Phys 2021; 23:7240-7246. [PMID: 33876084 DOI: 10.1039/d0cp06555b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The XeF6 molecule exists as a monomer in the gas phase and as the (XeF6)4 tetramer in solution. Herein we used distinct quantum mechanics methods to study the conformational equilibrium for the XeF6 monomer, which is represented mainly by Oh and C3v symmetric geometries, and for the (XeF6)4 structure found in condensate phases. The NMR 1J(129Xe-19F) coupling constant is predicted using our own NMR-DKH basis set, designed for NMR properties. The C3v conformer of XeF6 was stable only with HF, CCSD, and hybrid DFT functionals with at least 28% exact HF exchange. Increasing the % of HF exchange improves the description of the geometry and the Oh→C3v equilibrium. The BMK, BHandHLYP and LC-ωPBE functionals produce results in excellent agreement with experiments and high-level calculations for the XeF6 molecule. When it comes to the 1J(129Xe-19F) coupling constant, the (XeF6)4 structure must be considered. For that compound, BHandHLYP leads to the best structure, and BMK leads to the best coupling constant; therefore, the generalized protocol BMK/NMR-DKH//BHandHLYP/def2-SVP is recommended to study the XeF6 molecule in the gas phase and solution.
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Affiliation(s)
- Diego F S Paschoal
- NQTCM: Núcleo de Química Teórica e Computacional de Macaé, Polo Ajuda, Universidade Federal do Rio de Janeiro, Campus UFRJ-Macaé, 27.971-525, Macaé, RJ, Brazil.
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Abstract
The fundamental underpinnings of noncovalent bonds are presented, focusing on the σ-hole interactions that are closely related to the H-bond. Different means of assessing their strength and the factors that control it are discussed. The establishment of a noncovalent bond is monitored as the two subunits are brought together, allowing the electrostatic, charge redistribution, and other effects to slowly take hold. Methods are discussed that permit prediction as to which site an approaching nucleophile will be drawn, and the maximum number of bonds around a central atom in its normal or hypervalent states is assessed. The manner in which a pair of anions can be held together despite an overall Coulombic repulsion is explained. The possibility that first-row atoms can participate in such bonds is discussed, along with the introduction of a tetrel analog of the dihydrogen bond.
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Affiliation(s)
- Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, USA
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Frontera A. Noble Gas Bonding Interactions Involving Xenon Oxides and Fluorides. Molecules 2020; 25:molecules25153419. [PMID: 32731517 PMCID: PMC7435756 DOI: 10.3390/molecules25153419] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 12/18/2022] Open
Abstract
Noble gas (or aerogen) bond (NgB) can be outlined as the attractive interaction between an electron-rich atom or group of atoms and any element of Group-18 acting as an electron acceptor. The IUPAC already recommended systematic nomenclature for the interactions of groups 17 and 16 (halogen and chalcogen bonds, respectively). Investigations dealing with noncovalent interactions involving main group elements (acting as Lewis acids) have rapidly grown in recent years. They are becoming acting players in essential fields such as crystal engineering, supramolecular chemistry, and catalysis. For obvious reasons, the works devoted to the study of noncovalent Ng-bonding interactions are significantly less abundant than halogen, chalcogen, pnictogen, and tetrel bonding. Nevertheless, in this short review, relevant theoretical and experimental investigations on noncovalent interactions involving Xenon are emphasized. Several theoretical works have described the physical nature of NgB and their interplay with other noncovalent interactions, which are discussed herein. Moreover, exploring the Cambridge Structural Database (CSD) and Inorganic Crystal Structure Database (ICSD), it is demonstrated that NgB interactions are crucial in governing the X-ray packing of xenon derivatives. Concretely, special attention is given to xenon fluorides and xenon oxides, since they exhibit a strong tendency to establish NgBs.
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Affiliation(s)
- Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
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Mazej Z. Noble-Gas Chemistry More than Half a Century after the First Report of the Noble-Gas Compound. Molecules 2020; 25:E3014. [PMID: 32630333 PMCID: PMC7412050 DOI: 10.3390/molecules25133014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/21/2022] Open
Abstract
Recent development in the synthesis and characterization of noble-gas compounds is reviewed, i.e., noble-gas chemistry reported in the last five years with emphasis on the publications issued after 2017. XeF2 is commercially available and has a wider practical application both in the laboratory use and in the industry. As a ligand it can coordinate to metal centers resulting in [M(XeF2)x]n+ salts. With strong Lewis acids, XeF2 acts as a fluoride ion donor forming [XeF]+ or [Xe2F3]+ salts. Latest examples are [Xe2F3][RuF6]·XeF2, [Xe2F3][RuF6] and [Xe2F3][IrF6]. Adducts NgF2·CrOF4 and NgF2·2CrOF4 (Ng = Xe, Kr) were synthesized and structurally characterized at low temperatures. The geometry of XeF6 was studied in solid argon and neon matrices. Xenon hexafluoride is a well-known fluoride ion donor forming various [XeF5]+ and [Xe2F11]+ salts. A large number of crystal structures of previously known or new [XeF5]+ and [Xe2F11]+ salts were reported, i.e., [Xe2F11][SbF6], [XeF5][SbF6], [XeF5][Sb2F11], [XeF5][BF4], [XeF5][TiF5], [XeF5]5[Ti10F45], [XeF5][Ti3F13], [XeF5]2[MnF6], [XeF5][MnF5], [XeF5]4[Mn8F36], [Xe2F11]2[SnF6], [Xe2F11]2[PbF6], [XeF5]4[Sn5F24], [XeF5][Xe2F11][CrVOF5]·2CrVIOF4, [XeF5]2[CrIVF6]·2CrVIOF4, [Xe2F11]2[CrIVF6], [XeF5]2[CrV2O2F8], [XeF5]2[CrV2O2F8]·2HF, [XeF5]2[CrV2O2F8]·2XeOF4, A[XeF5][SbF6]2 (A = Rb, Cs), Cs[XeF5][BixSb1-xF6]2 (x = ~0.37-0.39), NO2XeF5(SbF6)2, XeF5M(SbF6)3 (M = Ni, Mg, Zn, Co, Cu, Mn and Pd) and (XeF5)3[Hg(HF)]2(SbF6)7. Despite its extreme sensitivity, many new XeO3 adducts were synthesized, i.e., the 15-crown adduct of XeO3, adducts of XeO3 with triphenylphosphine oxide, dimethylsulfoxide and pyridine-N-oxide, and adducts between XeO3 and N-bases (pyridine and 4-dimethylaminopyridine). [Hg(KrF2)8][AsF6]2·2HF is a new example of a compound in which KrF2 serves as a ligand. Numerous new charged species of noble gases were reported (ArCH2+, ArOH+, [ArB3O4]+, [ArB3O5]+, [ArB4O6]+, [ArB5O7]+, [B12(CN)11Ne]-). Molecular ion HeH+ was finally detected in interstellar space. The discoveries of Na2He and ArNi at high pressure were reported. Bonding motifs in noble-gas compounds are briefly commented on in the last paragraph of this review.
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Affiliation(s)
- Zoran Mazej
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
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Gomila RM, Frontera A. Covalent and Non-covalent Noble Gas Bonding Interactions in XeF n Derivatives ( n = 2-6): A Combined Theoretical and ICSD Analysis. Front Chem 2020; 8:395. [PMID: 32435634 PMCID: PMC7218167 DOI: 10.3389/fchem.2020.00395] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/15/2020] [Indexed: 11/13/2022] Open
Abstract
A noble gas bond (also known in the literature as aerogen bond) can be defined as the attractive interaction between any element of group-18 acting as a Lewis acid and any electron rich atom of group of atoms, thus following the IUPAC recommendation available for similar π,σ-hole interactions involving elements of groups 17 (halogens) and 16 (chalcogens). A significant difference between noble gas bonding (NgB) and halogen (HaB) or chalcogen (ChB) bonding is that whilst the former is scarcely found in the literature, HaB and ChB are very common and their applications in important fields like catalysis, biochemistry or crystal engineering have exponentially grown in the last decade. This article combines theory and experiment to highlight the importance of non-covalent NgBs in the solid state of several xenon fluorides [XeFn]m+ were the central oxidation state of Xe varies from +2 to +6 and the number of fluorine atoms varies from n = 2 to 6. The compounds with an odd number of fluorine atoms (n = 3 and 5) are cationic (m = 1). The Inorganic Crystal Structural Database (ICSD) strongly evidences the relevance of NgBs in the solid state structures of xenon derivatives. The ability of Xe compounds to participate in π,σ-hole interactions has been studied using different types of electron donors (Lewis bases and anions) using DFT calculations (PBE1PBE-D3/def2-TZVP) and the molecular electrostatic potential (MEP) surfaces.
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Affiliation(s)
- Rosa M Gomila
- Serveis Cientificotècnics, Universitat de les Illes Balears, Palma, Spain
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Palma, Spain
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Abstract
XeF6 has multiple C3v equivalent minima due to the Jahn–Teller effect. Through computational means we prove that the rearrangement between isomers occurs through fluorine quantum mechanical tunnelling.
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Affiliation(s)
- Itzhak Sedgi
- Department of Chemistry
- Ben-Gurion University of the Negev
- Beer-Sheva 841051
- Israel
- Department of Analytical Chemistry
| | - Sebastian Kozuch
- Department of Chemistry
- Ben-Gurion University of the Negev
- Beer-Sheva 841051
- Israel
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Michalczyk M, Zierkiewicz W, Wysokiński R, Scheiner S. Hexacoordinated Tetrel‐Bonded Complexes between TF4(T=Si, Ge, Sn, Pb) and NCH: Competition between σ‐ and π‐Holes. Chemphyschem 2019; 20:959-966. [DOI: 10.1002/cphc.201900072] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 02/15/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Mariusz Michalczyk
- Faculty of ChemistryWrocław University of Science and Technology Wybrzeże, Wyspiańskiego 27 50-370 Wrocław Poland
| | - Wiktor Zierkiewicz
- Faculty of ChemistryWrocław University of Science and Technology Wybrzeże, Wyspiańskiego 27 50-370 Wrocław Poland
| | - Rafał Wysokiński
- Faculty of ChemistryWrocław University of Science and Technology Wybrzeże, Wyspiańskiego 27 50-370 Wrocław Poland
| | - Steve Scheiner
- Department of Chemistry and BiochemistryUtah State University Logan, Utah 84322-0300 United States
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Franzke YJ, Weigend F. NMR Shielding Tensors and Chemical Shifts in Scalar-Relativistic Local Exact Two-Component Theory. J Chem Theory Comput 2019; 15:1028-1043. [DOI: 10.1021/acs.jctc.8b01084] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yannick J. Franzke
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Kaiserstraße 12, 76131 Karlsruhe, Germany
| | - Florian Weigend
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Scheiner S, Lu J. Halogen, Chalcogen, and Pnicogen Bonding Involving Hypervalent Atoms. Chemistry 2018; 24:8167-8177. [DOI: 10.1002/chem.201800511] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Steve Scheiner
- Department of Chemistry and Biochemistry; Utah State University; Logan UT 84322-0300 USA
| | - Jia Lu
- Department of Chemistry and Biochemistry; Utah State University; Logan UT 84322-0300 USA
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