1
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Hertler PR, Yu X, Brower JD, Nguyen TAD, Wu G, Autschbach J, Hayton TW. Exploring Spin-Orbit Effects in a [Cu 6Tl] + Nanocluster Featuring an Uncommon Tl-H Interaction. Chemistry 2024; 30:e202400390. [PMID: 38381600 DOI: 10.1002/chem.202400390] [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: 01/29/2024] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
Reaction of [CuH(PPh3)]6 with 1 equiv. of Tl(OTf) results in formation of [Cu6TlH6(PPh3)6][OTf] ([1]OTf]), which can be isolated in good yields. Variable-temperature 1H NMR spectroscopy, in combination with density functional theory (DFT) calculations, confirms the presence of a rare Tl-H orbital interaction. According to DFT, the 1H chemical shift of the Tl-adjacent hydride ligands of [1]+ includes 7.7 ppm of deshielding due to spin-orbit effects from the heavy Tl atom. This study provides valuable new insights into a rare class of metal hydrides, given that [1][OTf] is only the third isolable species reported to contain a Tl-H interaction.
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Affiliation(s)
- Phoebe R Hertler
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106
| | - Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260
| | - Jordan D Brower
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106
| | - Thuy-Ai D Nguyen
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106
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2
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Biswas R, Chen Y, Vela J, Rossini AJ. Relativistic DFT Calculations of Cadmium and Selenium Solid-State NMR Spectra of CdSe Nanocrystal Surfaces. ACS OMEGA 2023; 8:44362-44371. [PMID: 38027327 PMCID: PMC10666156 DOI: 10.1021/acsomega.3c07680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023]
Abstract
Solid-state NMR spectra have been used to probe the structure of CdSe nanocrystals and propose detailed models of their surface structures. Density functional theory (DFT)-optimized cluster models that represent probable molecular structures of carboxylate-coordinated surface sites have been proposed. However, to the best of our knowledge, 113Cd and 77Se chemical shifts have not been calculated for these surface models. We performed relativistic DFT calculations of cadmium and selenium magnetic shielding tensors on model compounds with previously measured solid-state NMR spectra with (i) the four-component Dirac-Kohn-Sham (DKS) Hamiltonian and (ii) the scalar and (iii) spin-orbit levels within the ZORA Hamiltonian. Molecular clusters with Cd and Se sites in varying bonding environments were used to model CdSe (100) and CdSe(111) surfaces capped with carboxylic acid ligands. Our calculations identify the observed 113Cd isotropic chemical shifts δ(iso) of -465, -318, and -146 ppm arising from CdSeO3, CdSe2O2, and CdSe3O surface groups, respectively, with very good agreement with experimental measurements. The 113Cd chemical shifts linearly decrease with the number of O-neighbors. The calculated spans (δ11 - δ33) encompass the experimental values for CdSe3O and CdSe2O2 clusters but are slightly larger than the measured value for CdSeO3 clusters. Relativistic DFT calculations predicted a one-bond 113Cd-77Se scalar coupling of 258 Hz, which is in good agreement with the experimental values of 250 Hz. With a dense coverage of carboxylic acid ligands, the CdSe (100) surface shows a distribution of Cd-Se bond lengths and J-couplings. Relativistic DFT simulations thus aid in interpretation of NMR spectra of CdSe nanocrystals and related nanomaterials.
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Affiliation(s)
- Rana Biswas
- U.S.
Department of Energy Ames National Laboratory, Ames, Iowa 50011. United States
- Department
of Physics and Astronomy; Electrical & Computer Engineering; Microelectronics
Research Center, Iowa State University, Ames, Iowa 50011. United States
| | - Yunhua Chen
- U.S.
Department of Energy Ames National Laboratory, Ames, Iowa 50011. United States
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011. United States
| | - Javier Vela
- U.S.
Department of Energy Ames National Laboratory, Ames, Iowa 50011. United States
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011. United States
| | - Aaron J. Rossini
- U.S.
Department of Energy Ames National Laboratory, Ames, Iowa 50011. United States
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011. United States
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3
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Zhu Q, Fettinger JC, Vasko P, Power PP. Hydrostannylation of Olefins by a Hydridostannylene Tungsten Complex. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Qihao Zhu
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - James C. Fettinger
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Petra Vasko
- Department of Chemistry, University of Helsinki, P.O. Box 55, A. I. Virtasen aukio 1, 00014 Helsinki, Finland
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, California 95616, United States
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4
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Wang S, Liu KY, Li HJ, Lee WC, Huang SL, Wu WC, Shi FK, Cheng YS, Lu IC, Liu HJ. Access to Monomeric Lead(II) Hydrides with Remarkable Thermostability and Their Use in Catalytic Hydroboration of Carbonyl Derivatives. Inorg Chem 2022; 61:13096-13103. [PMID: 35946578 DOI: 10.1021/acs.inorgchem.2c01658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report on the remarkable stability of unprecedented, monomeric lead(II) hydrides M+[LPb(II)H]- (M[1-H]), where L = 2,6-bis(3,5-diphenylpyrrolyl)pyridine and M = (18-crown-6)potassium or ([2.2.2]-cryptand)potassium. The half-life of [K18c6][1-H] of ∼2 days in tetrahydrofuran at 25 °C is significantly longer than those reported for dimeric lead(II) hydrides supported by bulky terphenyl ligands (few hours at low temperatures), which are the only examples known for lead(II) hydride compounds. The presence of a Pb-H bond in [1-H]- was unambiguously identified by multinuclear NMR spectroscopy. Remarkably, a 1H resonance of the hydride ligand was found at δ = 41.43 ppm (1JPbH = 1312 Hz). For reactivity study, [1-H]- serves as an excellent hydroboration catalyst with high turnover numbers and turnover frequencies for several carbonyl compounds.
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Affiliation(s)
- Shuo Wang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 30010, Taiwan
| | - Kang-Yu Liu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 30010, Taiwan
| | - Han-Jung Li
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4, Chung Hsing Rd., Chutung, Hsinchu 31040, Taiwan
| | - Wan-Ching Lee
- Department of Chemistry, National Chung Hsing University, 145, Xingda Rd, South District, Taichung City 402, Taiwan
| | - Shuo-Ling Huang
- Instrumentation Center, National Taiwan University, 1, Sec. 4, Roosevelt Rd., Daan Dist., Taipei City 10617, Taiwan
| | - Wen-Chun Wu
- Rezwave Technology Incorporated, 3F-5, 79, Hsin Tai Wu Rd., Sec. 1, HsiChih District, New Taipei City 22101, Taiwan
| | - Fong-Ku Shi
- Rezwave Technology Incorporated, 3F-5, 79, Hsin Tai Wu Rd., Sec. 1, HsiChih District, New Taipei City 22101, Taiwan
| | - You-Song Cheng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 30010, Taiwan
| | - I-Chung Lu
- Department of Chemistry, National Chung Hsing University, 145, Xingda Rd, South District, Taichung City 402, Taiwan
| | - Hsueh-Ju Liu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 30010, Taiwan.,Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, 1001 Daxue Rd, East District, Hsinchu City 30010, Taiwan
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5
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Zhu Q, Fettinger JC, Power PP. Hydrostannylation of carbon dioxide by a hydridostannylene molybdenum complex. Dalton Trans 2021; 50:12555-12562. [PMID: 34545896 DOI: 10.1039/d1dt02473f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of the aryltin(II) hydrides {AriPr4Sn(μ-H)}2 or {AriPr6Sn(μ-H)}2 (AriPr4 = -C6H3-2,6-(C6H3-2,6-iPr2)2, AriPr6 = -C6H3-2,6-(C6H2-2,4,6-iPr3)2) with two equivalents of the molybdenum carbonyl [Mo(CO)5(THF)] afforded the divalent tin hydride transition metal complexes, Mo(CO)5{Sn(AriPr6)H}, (1), or Mo(CO)5{Sn(AriPr4)(THF)H} (2), respectively. Complex 1 effects the facile hydrostannylation of carbon dioxide, to yield Mo(CO)5{Sn(AriPr6)(κ2-O,O'-O2CH)}, (3), which features a bidentate formate ligand coordinating the tin atom. Reaction of 3 with the pinacolborane, HBpin (pin = pinacolato) in benzene regenerated 1 in quantitative yield. All complexes were characterized by X-ray crystallography, as well as UV-visible, IR, and multinuclear NMR spectroscopies. The isolation of 1 and 2 is consistent with the existence of monomeric forms of {AriPr4Sn(μ-H)}2 and {AriPr6Sn(μ-H)}2 in solution. Regeneration of 1 from 3via reaction with pinacolborane as the hydrogen source shows the catalytic potential of 1 in the hydrogenation of CO2.
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Affiliation(s)
- Qihao Zhu
- Department of Chemistry, University of California, Davis, California 95616, USA.
| | - James C Fettinger
- Department of Chemistry, University of California, Davis, California 95616, USA.
| | - Philip P Power
- Department of Chemistry, University of California, Davis, California 95616, USA.
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6
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Dračínský M, Vícha J, Bártová K, Hodgkinson P. Towards Accurate Predictions of Proton NMR Spectroscopic Parameters in Molecular Solids. Chemphyschem 2020; 21:2075-2083. [PMID: 32691463 DOI: 10.1002/cphc.202000629] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 07/20/2020] [Indexed: 12/18/2022]
Abstract
The factors contributing to the accuracy of quantum-chemical calculations for the prediction of proton NMR chemical shifts in molecular solids are systematically investigated. Proton chemical shifts of six solid amino acids with hydrogen atoms in various bonding environments (CH, CH2 , CH3 , OH, SH and NH3 ) were determined experimentally using ultra-fast magic-angle spinning and proton-detected 2D NMR experiments. The standard DFT method commonly used for the calculations of NMR parameters of solids is shown to provide chemical shifts that deviate from experiment by up to 1.5 ppm. The effects of the computational level (hybrid DFT functional, coupled-cluster calculation, inclusion of relativistic spin-orbit coupling) are thoroughly discussed. The effect of molecular dynamics and nuclear quantum effects are investigated using path-integral molecular dynamics (PIMD) simulations. It is demonstrated that the accuracy of the calculated proton chemical shifts is significantly better when these effects are included in the calculations.
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Affiliation(s)
- Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, AS CR, Flemingovo nám. 2, Prague, CZ-16610, Czech Republic
| | - Jan Vícha
- Institute of Organic Chemistry and Biochemistry, AS CR, Flemingovo nám. 2, Prague, CZ-16610, Czech Republic.,Centre of Polymer Systems, Tomas Bata University in Zlín, Tomáše Bati 5678, Zlín, CZ-760 01, Czech Republic
| | - Kateřina Bártová
- Institute of Organic Chemistry and Biochemistry, AS CR, Flemingovo nám. 2, Prague, CZ-16610, Czech Republic
| | - Paul Hodgkinson
- Department of Chemistry, Durham University, South Road, DH1 3LE, Durham, UK
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7
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Vı́cha J, Novotný J, Komorovsky S, Straka M, Kaupp M, Marek R. Relativistic Heavy-Neighbor-Atom Effects on NMR Shifts: Concepts and Trends Across the Periodic Table. Chem Rev 2020; 120:7065-7103. [DOI: 10.1021/acs.chemrev.9b00785] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jan Vı́cha
- Centre of Polymer Systems, Tomas Bata University in Zlı́n, tř. Tomáše Bati 5678, CZ-76001 Zlı́n, Czechia
| | - Jan Novotný
- CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500 Brno, Czechia
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Michal Straka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, CZ-16610 Prague, Czechia
| | - Martin Kaupp
- Institute of Chemistry, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Radek Marek
- CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500 Brno, Czechia
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, CZ-62500 Brno, Czechia
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8
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Vícha J, Švec P, Růžičková Z, Samsonov MA, Bártová K, Růžička A, Straka M, Dračínský M. Experimental and Theoretical Evidence of Spin‐Orbit Heavy Atom on the Light Atom
1
H NMR Chemical Shifts Induced through H⋅⋅⋅I
−
Hydrogen Bond. Chemistry 2020; 26:8698-8702. [DOI: 10.1002/chem.202001532] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Indexed: 01/11/2023]
Affiliation(s)
- Jan Vícha
- Institute of Organic Chemistry and Biochemistry, AS CR Flemingovo nám. 2 Prague 16610 Czech Republic
- Centre of Polymer SystemsTomas Bata University in Zlín Tomáše Bati 5678 Zlín 760 01 Czech Republic
| | - Petr Švec
- Department of General and Inorganic ChemistryUniversity of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Zdeňka Růžičková
- Department of General and Inorganic ChemistryUniversity of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Maksim A. Samsonov
- Department of General and Inorganic ChemistryUniversity of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Kateřina Bártová
- Institute of Organic Chemistry and Biochemistry, AS CR Flemingovo nám. 2 Prague 16610 Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic ChemistryUniversity of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Michal Straka
- Institute of Organic Chemistry and Biochemistry, AS CR Flemingovo nám. 2 Prague 16610 Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, AS CR Flemingovo nám. 2 Prague 16610 Czech Republic
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9
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Repisky M, Komorovsky S, Kadek M, Konecny L, Ekström U, Malkin E, Kaupp M, Ruud K, Malkina OL, Malkin VG. ReSpect: Relativistic spectroscopy DFT program package. J Chem Phys 2020; 152:184101. [DOI: 10.1063/5.0005094] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Michal Repisky
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, SK-84536 Bratislava, Slovakia
| | - Marius Kadek
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Lukas Konecny
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Ulf Ekström
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, N-0315 Oslo, Norway
| | - Elena Malkin
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Martin Kaupp
- Technische Universität Berlin, Institute of Chemistry, Strasse des 17 Juni 135, D-10623 Berlin, Germany
| | - Kenneth Ruud
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Olga L. Malkina
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, SK-84536 Bratislava, Slovakia
| | - Vladimir G. Malkin
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, SK-84536 Bratislava, Slovakia
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10
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Maudrich J, Widemann M, Diab F, Kern RH, Sirsch P, Sindlinger CP, Schubert H, Wesemann L. Hydridoorganostannylene Coordination: Group 4 Metallocene Dichloride Reduction in Reaction with Organodihydridostannate Anions. Chemistry 2019; 25:16081-16087. [PMID: 31535431 PMCID: PMC6972602 DOI: 10.1002/chem.201903652] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Indexed: 01/24/2023]
Abstract
Organodihydridoelement anions of germanium and tin were reacted with metallocene dichlorides of Group 4 metals Ti, Zr and Hf. The germate anion [Ar*GeH2 ]- reacts with hafnocene dichloride under formation of the substitution product [Cp2 Hf(GeH2 Ar*)2 ]. Reaction of the organodihydridostannate with metallocene dichlorides affords the reduction products [Cp2 M(SnHAr*)2 ] (M=Ti, Zr, Hf). Abstraction of a hydride substituent from the titanium bis(hydridoorganostannylene) complex results in formation of cation [Cp2 M(SnAr*)(SnHAr*)]+ exhibiting a short Ti-Sn interaction. (Ar*=2,6-Trip2 C6 H3 , Trip=2,4,6-triisopropylphenyl).
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Affiliation(s)
- Jakob‐Jonathan Maudrich
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Max Widemann
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Fatima Diab
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Ralf H. Kern
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Peter Sirsch
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Christian P. Sindlinger
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstr 437077GöttingenGermany
| | - Hartmut Schubert
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Lars Wesemann
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
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11
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Maudrich JJ, Diab F, Weiß S, Widemann M, Dema T, Schubert H, Krebs KM, Eichele K, Wesemann L. Deprotonation of Organogermanium and Organotin Trihydrides. Inorg Chem 2019; 58:15758-15768. [PMID: 31368306 DOI: 10.1021/acs.inorgchem.9b01822] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Terphenyltin and terphenylgermanium trihydrides were deprotonated in reaction with strong bases, such as LiMe, LDA, or KBn. In the solid state, the Li salts of the germate anion 4 and 4a exhibit a Li-Ge contact. In the Li salt of the dihydridostannate anion 6a, the Li cation is not coordinated at the tin atom instead an interaction of the Li cation with the hydride substituents was found. Evidenced by 1H-7Li-HOESY NMR spectroscopy the Li-salt of the deprotonated tin hydride 6a exhibits in toluene solution a contact between Li cation and hydride substituents, whereas in the 1H-7Li-HOESY NMR spectrum of the homologous germate salt 4a, no crosspeak between hydride and Li signals was found. The organodihydridogermate and -stannate react as nucleophiles with low-valent Group 14 electrophiles. Thus, three compounds were synthesized: Ar-Ë'-EH2-Ar (E', E = Sn, Ge; Pb, Ge; Pb, Sn; Ar = Ar', Ar*). Following an alternative synthesis Ar'SnH2PbAr* was synthesized in reaction between [(Ar*PbH)2] and [(Ar'SnH)4] generated in situ. In reaction between low-valent organotin hydride [(Ar*SnH)2] and organdihydridostannate [Ar*SnH2]- formation of distannate [Ar*2Sn2H3]- was found.
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Affiliation(s)
- Jakob-Jonathan Maudrich
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Fatima Diab
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Sebastian Weiß
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Max Widemann
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Taulant Dema
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Kilian M Krebs
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Klaus Eichele
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie , Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
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12
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Rusakova IL, Rusakov YY. On the heavy atom on light atom relativistic effect in the NMR shielding constants of phosphine tellurides. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2019; 57:1071-1083. [PMID: 31077441 DOI: 10.1002/mrc.4889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 04/27/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
The relativistic HALA effect has been shown to depend on the spatial deformation of the lone electron pairs of a heavy atom, as demonstrated for alkyl and alkene phosphine tellurides. It was found that HALA effect on phosphorous nuclear magnetic resonance shielding constant is strongly dependent on the spatial arrangements of light substituents on phosphorus, resulting in the deformation of the lone electron pairs of tellurium.
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Affiliation(s)
- Irina L Rusakova
- A.E. Favorsky Irkutsk Institute of Chemistry, SB RAS, Irkutsk, Russia
| | - Yuriy Yu Rusakov
- A.E. Favorsky Irkutsk Institute of Chemistry, SB RAS, Irkutsk, Russia
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13
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Komorovsky S, Cherry PJ, Repisky M. Four-component relativistic time-dependent density-functional theory using a stable noncollinear DFT ansatz applicable to both closed- and open-shell systems. J Chem Phys 2019; 151:184111. [DOI: 10.1063/1.5121713] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Peter J. Cherry
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Michal Repisky
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT–The Arctic University of Norway, Tromsø, Norway
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14
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Queen JD, Fettinger JC, Power PP. Two quasi-stable lead(ii) hydrides at ambient temperature. Chem Commun (Camb) 2019; 55:10285-10287. [PMID: 31396611 DOI: 10.1039/c9cc05106f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple reactions of their terphenyl lead bromide precursors with DIBAL-H in diethyl ether solution at ca. -78 °C leads to the isolation of the hydrides {Pb(μ-H)ArPri4}2 (ArPri4 = C6H3-2,6-(C6H3-2,6-Pri2)2) (1) and {Pb(μ-H)ArMe6}2 (ArMe6 = C6H3-2,6-(C6H2-2,4,6-Me3)2) (2) in good yield (60-80%). The isolated solids are stable at up to 5 °C for several weeks but are thermally labile in solution. Hydride 1 decomposes to the diplumbyne ArPri4PbPbArPri4, while 2 decomposes to the plumbylene Pb(ArMe6)2. The decomposition of 1 was determined to be zero order with a rate constant of ca. 2.0 × 10-5 M min-1 at 298 K.
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Affiliation(s)
- Joshua D Queen
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
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15
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Münster L, Fojtů M, Capáková Z, Vaculovič T, Tvrdoňová M, Kuřitka I, Masařík M, Vícha J. Selectively Oxidized Cellulose with Adjustable Molecular Weight for Controlled Release of Platinum Anticancer Drugs. Biomacromolecules 2019; 20:1623-1634. [DOI: 10.1021/acs.biomac.8b01807] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lukáš Münster
- Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 760 01 Zlín, Czech Republic
| | | | - Zdenka Capáková
- Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 760 01 Zlín, Czech Republic
| | | | | | - Ivo Kuřitka
- Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 760 01 Zlín, Czech Republic
| | - Michal Masařík
- BIOCEV, First Faculty of Medicine, Charles University, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Jan Vícha
- Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 760 01 Zlín, Czech Republic
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16
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Weiß S, Schubert H, Wesemann L. Low valent lead hydride chemistry: hydroplumbylation of phenylacetylene and 1,1-dimethylallene. Chem Commun (Camb) 2019; 55:10238-10240. [PMID: 31393472 DOI: 10.1039/c9cc05431f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroplumbylation reactions with a low valent organolead hydride are presented.
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Affiliation(s)
- Sebastian Weiß
- Institut für Anorganische Chemie, Universität Tübingen
- 72076 Tübingen
- Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie, Universität Tübingen
- 72076 Tübingen
- Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie, Universität Tübingen
- 72076 Tübingen
- Germany
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17
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Ott JC, Wadepohl H, Enders M, Gade LH. Taking Solution Proton NMR to Its Extreme: Prediction and Detection of a Hydride Resonance in an Intermediate-Spin Iron Complex. J Am Chem Soc 2018; 140:17413-17417. [PMID: 30486649 DOI: 10.1021/jacs.8b11330] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Guided by DFT based modeling the chemical shift range of a hydride resonance in the proton nuclear magnetic resonance (NMR) spectrum of the intermediate-spin, square planar iron complex tBu(PNP)Fe-H was predicted and detected as a broad resonance at -3560 ppm (295 K) with a temperature dependent shift of approximately 2000 ppm between 223 and 383 K. The first detection of a metal-bonded hydrogen atom by solution NMR in a complex with a paramagnetic ground state illustrates the interplay of theory and experiment for the characterization of key components in paramagnetic base metal catalysis.
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Affiliation(s)
- Jonas C Ott
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
| | - Markus Enders
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
| | - Lutz H Gade
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
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18
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Zarycz MNC, Fonseca Guerra C. NMR 1H-Shielding Constants of Hydrogen-Bond Donor Reflect Manifestation of the Pauli Principle. J Phys Chem Lett 2018; 9:3720-3724. [PMID: 29927254 PMCID: PMC6038099 DOI: 10.1021/acs.jpclett.8b01502] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 06/21/2018] [Indexed: 05/25/2023]
Abstract
NMR spectroscopy is one of the most useful methods for detection and characterization of hydrogen bond (H-bond) interactions in biological systems. For H bonds X-H···Y, where X and Y are O or N, it is generally believed that a decrease in 1H-shielding constants relates to a shortening of H-bond donor-acceptor distance. Here we investigated computationally the trend of 1H-shielding constants for hydrogen-bonded protons in a series of guanine C8-substituted GC pair model compounds as a function of the molecular structure. Furthermore, the electron density distribution around the hydrogen atom was analyzed with the Voronoi deformation density (VDD) method. Our findings demonstrate that 1H-shielding values of the hydrogen bond are determined by the depletion of charge around the hydrogen atom, which stems from the fact that electrons obey the Pauli exclusion principle.
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Affiliation(s)
- M. Natalia C. Zarycz
- Instituto de Investigaciones
en Físico-Química de Córdoba, (INFIQC), CONICET,
Facultad de Ciencias Químicas, Universidad
Nacional de Córdoba, Haya de la Torre esq. Medina Allende, X5000HUA Córdoba, Argentina
- CONICET-CCT Nordeste, Facultad de Ciencias
Exactas, Naturales y Agrimensura, Universidad
Nacional del Nordeste, Av. Libertad 5460, W3400AAS Corrientes, Argentina
| | - Célia Fonseca Guerra
- Department
of Chemistry and Pharmaceutical Sciences and Amsterdam Center for
Multiscale Modeling (ACMM), Vrije Universiteit,
Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Leiden
Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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19
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Hadlington TJ, Driess M, Jones C. Low-valent group 14 element hydride chemistry: towards catalysis. Chem Soc Rev 2018; 47:4176-4197. [PMID: 29666847 DOI: 10.1039/c7cs00649g] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The chemistry of group 14 element(ii) hydride complexes has rapidly expanded since the first stable example of such a compound was reported in 2000. Since that time it has become apparent that these systems display remarkable reactivity patterns, in some cases mimicking those of late transition-metal (TM) hydride compounds. This is especially so for the hydroelementation of unsaturated organic substrates. Recently, this aspect of their reactivity has been extended to the use of group 14 element(ii) hydrides as efficient, "TM-like" catalysts in organic synthesis. This review will detail how the chemistry of these hydride compounds has advanced since their early development. Throughout, there is a focus on the importance of ligand effects in these systems, and how ligand design can greatly modify a coordinated complex's electronic structure, reactivity, and catalytic efficiency.
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Affiliation(s)
- Terrance J Hadlington
- Department of Chemistry, Metalorganics and Inorganic Materials, Techniche Universitat Berlin, Strasse des 17. Juni 135, Sekr. C2, 10623 Berlin, Germany.
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20
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Vícha J, Komorovsky S, Repisky M, Marek R, Straka M. Relativistic Spin–Orbit Heavy Atom on the Light Atom NMR Chemical Shifts: General Trends Across the Periodic Table Explained. J Chem Theory Comput 2018; 14:3025-3039. [DOI: 10.1021/acs.jctc.8b00144] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan Vícha
- Center of Polymer Systems, University Institute, Tomas Bata University in Zlín, Třída T. Bati, 5678, CZ-76001, Zlín, Czech Republic
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Science, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Michal Repisky
- Center for Theoretical and Computational Chemistry, Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Radek Marek
- CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czech Republic
| | - Michal Straka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, CZ-16610, Prague, Czech Republic
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21
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Novotný J, Vícha J, Bora PL, Repisky M, Straka M, Komorovsky S, Marek R. Linking the Character of the Metal–Ligand Bond to the Ligand NMR Shielding in Transition-Metal Complexes: NMR Contributions from Spin–Orbit Coupling. J Chem Theory Comput 2017; 13:3586-3601. [DOI: 10.1021/acs.jctc.7b00444] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan Novotný
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
| | - Jan Vícha
- Centre
of
Polymer Systems, University Institute, Tomas Bata University in Zlín, Třída T. Bati, 5678, CZ-76001 Zlín, Czechia
| | - Pankaj L. Bora
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
| | - Michal Repisky
- Center
for Theoretical and Computational Chemistry, Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Michal Straka
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
- Institute of Organic
Chemistry and Biochemistry of the ASCR, Flemingovo nám. 2, CZ-16610 Praha, Czechia
| | - Stanislav Komorovsky
- Institute
of Inorganic Chemistry, Slovak Academy of Science, Dúbravská
cesta 9, SK-84536 Bratislava, Slovakia
| | - Radek Marek
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
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22
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Schneider J, Sindlinger CP, Eichele K, Schubert H, Wesemann L. Low-Valent Lead Hydride and Its Extreme Low-Field 1H NMR Chemical Shift. J Am Chem Soc 2017; 139:6542-6545. [DOI: 10.1021/jacs.7b01856] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Julia Schneider
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Christian P. Sindlinger
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Klaus Eichele
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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