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Holmes ST, Schönzart J, Philips AB, Kimball JJ, Termos S, Altenhof AR, Xu Y, O'Keefe CA, Autschbach J, Schurko RW. Structure and bonding in rhodium coordination compounds: a 103Rh solid-state NMR and relativistic DFT study. Chem Sci 2024; 15:2181-2196. [PMID: 38332836 PMCID: PMC10848688 DOI: 10.1039/d3sc06026h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/06/2023] [Indexed: 02/10/2024] Open
Abstract
This study demonstrates the application of 103Rh solid-state NMR (SSNMR) spectroscopy to inorganic and organometallic coordination compounds, in combination with relativistic density functional theory (DFT) calculations of 103Rh chemical shift tensors and their analysis with natural bond orbital (NBO) and natural localized molecular orbital (NLMO) protocols, to develop correlations between 103Rh chemical shift tensors, molecular structure, and Rh-ligand bonding. 103Rh is one of the least receptive NMR nuclides, and consequently, there are very few reports in the literature. We introduce robust 103Rh SSNMR protocols for stationary samples, which use the broadband adiabatic inversion-cross polarization (BRAIN-CP) pulse sequence and wideband uniform-rate smooth-truncation (WURST) pulses for excitation, refocusing, and polarization transfer, and demonstrate the acquisition of 103Rh SSNMR spectra of unprecedented signal-to-noise and uniformity. The 103Rh chemical shift tensors determined from these spectra are complemented by NBO/NLMO analyses of contributions of individual orbitals to the 103Rh magnetic shielding tensors to understand their relationship to structure and bonding. Finally, we discuss the potential for these experimental and theoretical protocols for investigating a wide range of materials containing the platinum group elements.
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Affiliation(s)
- Sean T Holmes
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Jasmin Schönzart
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Adam B Philips
- Department of Chemistry, University at Buffalo, State University of New York Buffalo NY 14260-3000 USA
| | - James J Kimball
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Sara Termos
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Adam R Altenhof
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Yijue Xu
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
| | - Christopher A O'Keefe
- Department of Chemistry & Biochemistry, University of Windsor Windsor ON N9B 3P4 Canada
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York Buffalo NY 14260-3000 USA
| | - Robert W Schurko
- Department of Chemistry & Biochemistry, Florida State University Tallahassee FL 32306 USA
- National High Magnetic Field Laboratory Tallahassee FL 32310 USA
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2
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Gui X, Sorbelli D, Caló FP, Leutzsch M, Patzer M, Fürstner A, Bistoni G, Auer AA. Elucidating the Electronic Nature of Rh-based Paddlewheel Catalysts from 103 Rh NMR Chemical Shifts: Insights from Quantum Mechanical Calculations. Chemistry 2024; 30:e202301846. [PMID: 37721802 DOI: 10.1002/chem.202301846] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 09/20/2023]
Abstract
The tremendous importance of dirhodium paddlewheel complexes for asymmetric catalysis is largely the result of an empirical optimization of the chiral ligand sphere about the bimetallic core. It was only recently that a H(C)Rh triple resonance 103 Rh NMR experiment provided the long-awaited opportunity to examine - with previously inconceivable accuracy - how variation of the ligands impacts on the electronic structure of such catalysts. The recorded effects are dramatic: formal replacement of only one out of eight O-atoms surrounding the metal centers in a dirhodium tetracarboxylate by an N-atom results in a shielding of the corresponding Rh-site of no less than 1000 ppm. The current paper provides the theoretical framework that allows this and related experimental observations made with a set of 19 representative rhodium complexes to be interpreted. In line with symmetry considerations, it is shown that the shielding tensor responds only to the donor ability of the equatorial ligands along the perpendicular principal axis. Axial ligands, in contrast, have no direct effect on shielding but may come into play via the electronicc i s ${cis}$ -effect that they exert onto the neighboring equatorial sites. On top of these fundamental interactions, charge redistribution within the core as well as the electronict r a n s ${trans}$ -effect of ligands of different donor strengths is reflected in the recorded 103 Rh NMR shifts.
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Affiliation(s)
- Xin Gui
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
| | - Diego Sorbelli
- Dipartmento di Chimica, Biologia e Biotechnologie, Università Degli Studi Di Perugia, 06123, Perugia, Italy
| | - Fabio P Caló
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
| | - Michael Patzer
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
| | - Giovanni Bistoni
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
- Dipartmento di Chimica, Biologia e Biotechnologie, Università Degli Studi Di Perugia, 06123, Perugia, Italy
| | - Alexander A Auer
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der RuhrMülheim/Ruhr, Germany
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3
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Caló FP, Bistoni G, Auer AA, Leutzsch M, Fürstner A. Triple Resonance Experiments for the Rapid Detection of 103Rh NMR Shifts: A Combined Experimental and Theoretical Study into Dirhodium and Bismuth-Rhodium Paddlewheel Complexes. J Am Chem Soc 2021; 143:12473-12479. [PMID: 34351134 PMCID: PMC8377716 DOI: 10.1021/jacs.1c06414] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
A H(C)Rh triple resonance
NMR experiment makes the rapid detection
of 103Rh chemical shifts possible, which were previously
beyond reach. It served to analyze a series of dirhodium and bismuth–rhodium
paddlewheel complexes of the utmost importance for metal–carbene
chemistry. The excellent match between the experimental and computed 103Rh shifts in combination with a detailed analysis of the
pertinent shielding tensors forms a sound basis for a qualitative
and quantitative interpretation of these otherwise (basically) inaccessible
data. The observed trends clearly reflect the influence exerted by
the equatorial ligands (carboxylate versus carboxamidate), the axial
ligands (solvents), and the internal “metalloligand”
(Rh versus Bi) on the electronic estate of the reactive Rh(II) center.
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Affiliation(s)
- Fabio P Caló
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim, Germany
| | | | | | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim, Germany
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4
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Mirzaeva IV, Kozlova SG. The Nature of Halogen Dependence of 103Rh NMR Chemical Shift in Complex Anions cis-[X1X2Rh(CO)2]− (X1, X2 = Cl, Br, I). J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619110076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Mirzaeva IV, Mainichev DA, Kozlova SG. A Localized Molecular Orbital Study of the Halogen Substitution Effect on (103)Rh NMR Shielding in [Cp*RhX2]2, Where X = Cl, Br, or I. J Phys Chem A 2016; 120:1944-9. [PMID: 26927955 DOI: 10.1021/acs.jpca.6b00882] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
(103)Rh NMR parameters and the bonding structure of three complexes of [Cp*RhX2]2, where X = Cl, Br, or I, have been studied with the help of natural bond orbitals (NBOs) and natural localized molecular orbitals (NLMOs). The complexes of [Cp*RhX2]2, where X = Cl, Br, or I, have similar bonding structures, with the major difference being in the degree of covalency of the Rh-X bonds. The decomposition of (103)Rh NMR shielding into diamagnetic, paramagnetic, and spin-orbit terms shows that normal halogen dependence (NHD) of the (103)Rh NMR shift is defined mostly by the paramagnetic term, with the spin-orbit term being significantly smaller. The decomposition of (103)Rh shielding into spin-free NBO and NLMO contributions shows that (103)Rh shielding is dominated by Rh d-orbital deshielding contributions. We explain the NHD of the (103)Rh NMR shift with the increase in the energies of the virtual antibonding Rh-X orbitals along the X = Cl, Br, and I series.
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Affiliation(s)
- Irina V Mirzaeva
- Nikolaev Institute of Inorganic Chemistry SB RAS , Lavrentiev Ave., 3, Novosibirsk, 630090 Russia
| | - Dmitry A Mainichev
- Nikolaev Institute of Inorganic Chemistry SB RAS , Lavrentiev Ave., 3, Novosibirsk, 630090 Russia
| | - Svetlana G Kozlova
- Nikolaev Institute of Inorganic Chemistry SB RAS , Lavrentiev Ave., 3, Novosibirsk, 630090 Russia
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Ortuño MA, Castro L, Bühl M. Computational Insight into 103Rh Chemical Shift–Structure Correlations in Rhodium Bis(phosphine) Complexes. Organometallics 2013. [DOI: 10.1021/om400774y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Manuel A. Ortuño
- Unitat
de Química Física, Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Ludovic Castro
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY10
9ST, U.K
| | - Michael Bühl
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY10
9ST, U.K
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7
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Werz DB, Klatt G, Raskatov JA, Köppel H, Gleiter R. CpCo-Mediated Reactions of Cyclopropenones: A DFT Study. Organometallics 2009. [DOI: 10.1021/om800685t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel B. Werz
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany, and Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Günter Klatt
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany, and Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Jevgenij A. Raskatov
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany, and Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Horst Köppel
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany, and Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Rolf Gleiter
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany, and Physikalisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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8
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Koch R, Bruhn T. Theoretical 49Ti NMR chemical shifts. J Mol Model 2006; 12:723-9. [PMID: 16570140 DOI: 10.1007/s00894-005-0081-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Accepted: 11/07/2005] [Indexed: 11/26/2022]
Abstract
49Ti chemical shifts for a total of 20 titanium complexes are reported, and several levels of theory are evaluated in order to identify a reliable approach for the calculation of titanium NMR data. The popular B3LYP/6-31G(d)//B3LYP/6-31G(d) proves to give very good agreement with experimental data over a range from 1,400 to -1,300 ppm. The MP2/6-31G(d)//MP2/6-31G(d) level computes even smaller average deviations but fails for TiI(4). This behavior together with its huge demand for computational resources requires careful handling of this theoretical level. In addition, NMR data for five titanium fulvene (or related) complexes are given.
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Affiliation(s)
- Rainer Koch
- Institut für Reine und Angewandte Chemie, Carl von Ossietzky Universität Oldenburg, P.O. Box 2503, 26111, Oldenburg, Germany.
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9
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Bühl M, Schurhammer R, Imhof P. Peroxovanadate Imidazole Complexes as Catalysts for Olefin Epoxidation: Density Functional Study of Dynamics, 51V NMR Chemical Shifts, and Mechanism. J Am Chem Soc 2004; 126:3310-20. [PMID: 15012162 DOI: 10.1021/ja039436f] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A density functional study of [VO(O(2))(2)(Im)](-) (1, Im = imidazole) is presented, calling special attention to effects of dynamics and solvation on the (51)V chemical shift. According to Car-Parrinello molecular dynamics simulations, rotation of the Im ligand can be fast in the gas phase, but is more hindered in aqueous solution. In the latter, bonding between Im and V is reinforced, and dynamic averaging of GIAO-B3LYP magnetic shieldings affords a gas-to-liquid shift of ca. -100 ppm for delta((51)V). A complete catalytic cycle has been characterized for olefin epoxidation mediated by 1, using H(2)O(2) as oxidant. The rate-determining step is indicated to be initial oxygen atom transfer from 1 to the substrate via a spiro-like transition state. Substituent effects on this barrier are examined, and a significant decrease (by 2-6 kcal/mol) is revealed upon removal of the Im proton or upon complexation with a H-bond acceptor. Implications for the mechanism of the oxidative chemistry of vanadium-dependent haloperoxidases and requirements for prospective biomimetic analogues are discussed.
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Affiliation(s)
- Michael Bühl
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany.
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10
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Gobetto R, Nervi C, Romanin B, Salassa L, Milanesio M, Croce G. X-ray Structures and Complete NMR Assignment by DFT Calculations of [Os(bpy)2(CO)Cl]PF6and [Os(bpy)2(CO)H]PF6Complexes. Organometallics 2003. [DOI: 10.1021/om0303202] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Bühl M, Mauschick FT. Density Functional Study of Catalytic Silane Alcoholysis at a [Fe(Cp)(CO)(PR3)]+ Center. Organometallics 2003. [DOI: 10.1021/om020890m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Bühl
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Frank T. Mauschick
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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12
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Schreckenbach G. NMR shielding calculations across the periodic table: diamagnetic uranium compounds. 2. Ligand and metal NMR. Inorg Chem 2002; 41:6560-72. [PMID: 12470051 DOI: 10.1021/ic020370j] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this and a previous article (J. Phys. Chem. A 2000, 104, 8244), the range of application for relativistic density functional theory (DFT) is extended to the calculation of nuclear magnetic resonance (NMR) shieldings and chemical shifts in diamagnetic actinide compounds. Two relativistic DFT methods are used, ZORA ("zeroth-order regular approximation") and the quasirelativistic (QR) method. In the given second paper, NMR shieldings and chemical shifts are calculated and discussed for a wide range of compounds. The molecules studied comprise uranyl complexes, [UO(2)L(n)](+/-)(q); UF(6); inorganic UF(6) derivatives, UF(6-n)Cl(n), n = 0-6; and organometallic UF(6) derivatives, UF(6-n)(OCH(3))(n), n = 0-5. Uranyl complexes include [UO(2)F(4)](2-), [UO(2)Cl(4)](2-), [UO(2)(OH)(4)](2-), [UO(2)(CO(3))(3)](4-), and [UO(2)(H(2)O)(5)](2+). For the ligand NMR, moderate (e.g., (19)F NMR chemical shifts in UF(6-n)Cl(n)) to excellent agreement [e.g., (19)F chemical shift tensor in UF(6) or (1)H NMR in UF(6-n)(OCH(3))(n)] has been found between theory and experiment. The methods have been used to calculate the experimentally unknown (235)U NMR chemical shifts. A large chemical shift range of at least 21,000 ppm has been predicted for the (235)U nucleus. ZORA spin-orbit appears to be the most accurate method for predicting actinide metal chemical shifts. Trends in the (235)U NMR chemical shifts of UF(6-n)L(n) molecules are analyzed and explained in terms of the calculated electronic structure. It is argued that the energy separation and interaction between occupied and virtual orbitals with f-character are the determining factors.
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Affiliation(s)
- Georg Schreckenbach
- Theoretical Division (MS B268) and Seaborg Institute for Transactinium Science, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
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13
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Kaupp M, Reviakine R, Malkina OL, Arbuznikov A, Schimmelpfennig B, Malkin VG. Calculation of electronic g-tensors for transition metal complexes using hybrid density functionals and atomic meanfield spin-orbit operators. J Comput Chem 2002; 23:794-803. [PMID: 12012356 DOI: 10.1002/jcc.10049] [Citation(s) in RCA: 168] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We report the first implementation of the calculation of electronic g-tensors by density functional methods with hybrid functionals. Spin-orbit coupling is treated by the atomic meanfield approximation. g-Tensors for a set of small main group radicals and for a series of ten 3d and two 4d transition metal complexes have been compared using the local density approximation (VWN functional), the generalized gradient approximation (BP86 functional), as well as B3-type (B3PW91) and BH-type (BHPW91) hybrid functionals. For main group radicals, the effect of exact-exchange mixing is small. In contrast, significant differences between the various functionals arise for transition metal complexes. As has been shown previously, local and in particular gradient-corrected functionals tend to underestimate the "paramagnetic" contributions to the g-tensors in these cases and thereby recover only about 40-50% of the range of experimental g-tensor components. This is improved to ca. 60% by the B3PW91 functional, which also gives slightly reduced standard deviations. The range increases to almost 100% using the half-and-half functional BHPW91. However, the quality of the correlation with experimental data worsens due to a significant overestimate of some intermediate g-tensor values. The worse performance of the BHPW91 functional in these cases is accompanied by spin contamination. Although none of the functionals tested thus appears to be ideal for the treatment of electronic g-tensors in transition metal complexes, the B3PW91 hybrid functional exhibited the overall most satisfactory performance. Apart from the validation of hybrid functionals, some aspects in the treatment of spin-orbit contributions to the g-tensor are discussed.
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Affiliation(s)
- Martin Kaupp
- Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
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14
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Kirby CW, Power WP. Cobalt-59 chemical shift and quadrupolar tensors of simple octahedral cobalt(III) complexes. CAN J CHEM 2001. [DOI: 10.1139/v01-025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Analysis of the solid-state powder 59Co NMR spectra of ten simple inorganic cobalt(III) complexes at 11.75, and in most cases, 4.7 T have permitted the assignment of specific ligand planes to ranges of values of the observed chemical shift principal components. The relevant chemical shift components were determined from the simulations of the powder line shapes. These simulations also provided the relative orientations of the chemical shift (CS) and electric field gradient (efg) tensors, as well as magnitude and asymmetry of the 59Co quadrupolar coupling. Using symmetry arguments and ab initio calculations, as appropriate or necessary, the orientations of the efg tensors in the molecular frame were deduced. This allowed the determination of the CS tensors in the molecular frame and thus assignment of the ligand planes responsible for the observed values of chemical shifts.Key words: cobalt, chemical shift, quadrupolar coupling, solid state NMR.
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15
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Thornberry MP, Slebodnick C, Deck PA, Fronczek FR. Synthesis and Structure of Piano Stool Complexes Derived from the Tetrakis(pentafluorophenyl)cyclopentadienyl Ligand. Organometallics 2001. [DOI: 10.1021/om000805f] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew P. Thornberry
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212, and Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212, and Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Paul A. Deck
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212, and Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Frank R. Fronczek
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212, and Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
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16
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Bühl M, Håkansson M, Mahmoudkhani AH, Öhrström L. X-ray Structures and DFT Calculations on Rhodium−Olefin Complexes: Comments on the 103Rh NMR Shift−Stability Correlation. Organometallics 2000. [DOI: 10.1021/om000419y] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Bühl
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany, Department of Inorganic Chemistry, Chalmers Tekniska Högskola, SE-412 96 Gothenburg, Sweden, and Department of Chemistry, Gothenburg University, SE-412 96 Gothenburg, Sweden
| | - Mikael Håkansson
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany, Department of Inorganic Chemistry, Chalmers Tekniska Högskola, SE-412 96 Gothenburg, Sweden, and Department of Chemistry, Gothenburg University, SE-412 96 Gothenburg, Sweden
| | - Amir H. Mahmoudkhani
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany, Department of Inorganic Chemistry, Chalmers Tekniska Högskola, SE-412 96 Gothenburg, Sweden, and Department of Chemistry, Gothenburg University, SE-412 96 Gothenburg, Sweden
| | - Lars Öhrström
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany, Department of Inorganic Chemistry, Chalmers Tekniska Högskola, SE-412 96 Gothenburg, Sweden, and Department of Chemistry, Gothenburg University, SE-412 96 Gothenburg, Sweden
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17
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Thornberry MP, Slebodnick C, Deck PA, Fronczek FR. Structural and Electronic Effects of Pentafluorophenyl Substituents on Cyclopentadienyl Complexes of Fe, Co, Mn, and Re1. Organometallics 2000. [DOI: 10.1021/om000798v] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212
| | - Paul A. Deck
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0212
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
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18
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Xu XP, Au-Yeung SCF. A DFT and 59Co Solid-State NMR Study of the Chemical Shielding Property and Electronic Interaction in the Metalloporphyrin System. J Am Chem Soc 2000. [DOI: 10.1021/ja9911723] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Ping Xu
- Contribution from the Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Steve C. F. Au-Yeung
- Contribution from the Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
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Rodriguez-Fortea A, Alemany P, Ziegler T. Density Functional Calculations of NMR Chemical Shifts with the Inclusion of Spin−Orbit Coupling in Tungsten and Lead Compounds. J Phys Chem A 1999. [DOI: 10.1021/jp9912004] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Schreckenbach G. The 57Fe nuclear magnetic resonance shielding in ferrocene revisited. A density-functional study of orbital energies, shielding mechanisms, and the influence of the exchange-correlation functional. J Chem Phys 1999. [DOI: 10.1063/1.479133] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Leitner W, Bühl M, Fornika R, Six C, Baumann W, Dinjus E, Kessler M, Krüger C, Rufińska A. 103Rh Chemical Shifts in Complexes Bearing Chelating Bidentate Phosphine Ligands. Organometallics 1999. [DOI: 10.1021/om980980k] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Walter Leitner
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Michael Bühl
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Roland Fornika
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Christian Six
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Wolfgang Baumann
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Eckhard Dinjus
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Magnus Kessler
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Carl Krüger
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
| | - Anna Rufińska
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany, Organisch-chemisches Institut, Universität Zürich, Winterthurestrasse 190, 8057 Zürich, Switzerland, Institut für Organische Katalyseforschung an der Universität Rostock, Arbeitsgruppe “Komplexkatalyse”, Rostock, Germany, and Forschungszentrum Karlsruhe, Technik und Umwelt, Institut für Technische Chemie, Karlsruhe, Germany
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Zhou P, Au-Yeung SCF, Xu XP. A DFT and 59Co Solid-State NMR Study of the Second-Sphere Interaction in Polyammonium Macrocycles Cobalt Cyanide Supercomplexes. J Am Chem Soc 1999. [DOI: 10.1021/ja981924d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ping Zhou
- Contribution from the Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Steve C. F. Au-Yeung
- Contribution from the Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Xiao-Ping Xu
- Contribution from the Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
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Donkervoort JG, Bühl M, Ernsting JM, Elsevier CJ. Steric and Electronic Effects on the103Rh NMR Chemical Shifts of RhI(cyclooctadiene) Compounds Bearing N-Donor Ligands. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(199901)1999:1<27::aid-ejic27>3.0.co;2-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ruiz-Morales Y, Ziegler T. A Theoretical Study of 31P and 95Mo NMR Chemical Shifts in M(CO)5PR3 (M = Cr, Mo; R = H, CH3, C6H5, F, and Cl) Based on Density Functional Theory and Gauge-Including Atomic Orbitals. J Phys Chem A 1998. [DOI: 10.1021/jp973308u] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yosadara Ruiz-Morales
- Department of Chemistry, The University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Tom Ziegler
- Department of Chemistry, The University of Calgary, Calgary, Alberta, Canada T2N 1N4
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Bühl M. Korrelation zwischen
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V‐chemischer Verschiebung und Reaktivität für die Ethylen‐Polymerisation bei Oxovanadium(
V
)‐Katalysatoren. Angew Chem Int Ed Engl 1998. [DOI: 10.1002/(sici)1521-3757(19980116)110:1/2<153::aid-ange153>3.0.co;2-#] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael Bühl
- Organisch‐chemisches Institut der Universität, Winterthurerstrasse 190, CH‐8057 Zürich (Schweiz), Telefax: Int.+1/635 6812
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Kaupp M, Malkina OL, Malkin VG. The calculation of 17O chemical shielding in transition metal oxo complexes. I. Comparison of DFT and ab initio approaches, and mechanisms of relativity-induced shielding. J Chem Phys 1997. [DOI: 10.1063/1.474053] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Angermund K, Baumann W, Dinjus E, Fornika R, Görls H, Kessler M, Krüger C, Leitner W, Lutz F. Complexes [(P2)Rh(hfacac)] as Model Compounds for the Fragment [(P2)Rh] and as Highly Active Catalysts for CO2 Hydrogenation: The Accessible Molecular Surface (AMS) Model as an Approach to Quantifying the Intrinsic Steric Properties of Chelating Ligands in Homogeneous Catalysis. Chemistry 1997. [DOI: 10.1002/chem.19970030516] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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