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Chaudhary M, Karmakar A, Mishra V, Bhattacharya A, Mumbaraddi D, Mar A, Michaelis VK. Effect of aliovalent bismuth substitution on structure and optical properties of CsSnBr 3. Commun Chem 2023; 6:75. [PMID: 37076629 PMCID: PMC10115781 DOI: 10.1038/s42004-023-00874-w] [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: 01/11/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023] Open
Abstract
Aliovalent substitution of the B component in ABX3 metal halides has often been proposed to modify the band gap and thus the photovoltaic properties, but details about the resulting structure have remained largely unknown. Here, we examine these effects in Bi-substituted CsSnBr3. Powder X-ray diffraction (XRD) and solid-state 119Sn, 133Cs and 209Bi nuclear magnetic resonance (NMR) spectroscopy were carried out to infer how Bi substitution changes the structure of these compounds. The cubic perovskite structure is preserved upon Bi-substitution, but with disorder in the B site occurring at the atomic level. Bi atoms are randomly distributed as they substitute for Sn atoms with no evidence of Bi segregation. The absorption edge in the optical spectra shifts from 1.8 to 1.2 eV upon Bi-substitution, maintaining a direct band gap according to electronic structure calculations. It is shown that Bi-substitution improves resistance to degradation by inhibiting the oxidation of Sn.
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Affiliation(s)
- Madhusudan Chaudhary
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Abhoy Karmakar
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Vidyanshu Mishra
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Amit Bhattacharya
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Dundappa Mumbaraddi
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Arthur Mar
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Vladimir K Michaelis
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada.
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2
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Karmakar A, Bernard GM, Pominov A, Tabassum T, Chaklashiya R, Han S, Jain SK, Michaelis VK. Triangulating Dopant-Level Mn(II) Insertion in a Cs 2NaBiCl 6 Double Perovskite Using Magnetic Resonance Spectroscopy. J Am Chem Soc 2023; 145:4485-4499. [PMID: 36787417 DOI: 10.1021/jacs.2c10915] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Lead-free metal halide double perovskites are gaining increasing attention for optoelectronic applications. Specifically, doping metal halide double perovskites using transition metals enables broadband tailorability of the optical bandgap for these emerging semiconducting materials. One candidate material is Mn(II)-doped Cs2NaBiCl6, but the nature of Mn(II) insertion on chemical structure is poorly understood due to low Mn loading. It is critical to determine the atomic-level structure at the site of Mn(II) incorporation in doped perovskites to better understand the structure-property relationships in these materials and thus to advance their applicability to optoelectronic applications. Magnetic resonance spectroscopy is uniquely qualified to address this, and thus a comprehensive three-pronged strategy, involving solid-state nuclear magnetic resonance (NMR), high-field dynamic nuclear polarization (DNP), and electron paramagnetic resonance (EPR) spectroscopies, is used to identify the location of Mn(II) insertion in Cs2NaBiCl6. Multinuclear (23Na, 35Cl, 133Cs, and 209Bi) one-dimensional (1D) magnetic resonance spectra reveal a low level of Mn(II) incorporation, with select spins affected by paramagnetic relaxation enhancement (PRE) induced by Mn(II) neighbors. EPR measurements confirm the oxidation state, octahedral symmetry, and low doping levels of the Mn(II) centers. Complementary EPR and NMR measurements confirm that the cubic structure is maintained with Mn(II) incorporation at room temperature, but the structure deviates slightly from cubic symmetry at low temperatures (<30 K). HYperfine Sublevel CORrelation (HYSCORE) EPR spectroscopy explores the electron-nuclear correlations of Mn(II) with 23Na, 133Cs, and 35Cl. The absence of 209Bi correlations suggests that Bi centers are replaced by Mn(II). Endogenous DNP NMR measurements from Mn(II) → 133Cs (<30 K) reveal that the solid effect is the dominant mechanism for DNP transfer and supports that Mn(II) is homogeneously distributed within the double-perovskite structure.
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Affiliation(s)
- Abhoy Karmakar
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Guy M Bernard
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Arkadii Pominov
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Tarnuma Tabassum
- Department of Chemistry and Biochemistry, University of California─Santa Barbara, Santa Barbara, California 93106, United States
| | - Raj Chaklashiya
- Materials Department, University of California─Santa Barbara, Santa Barbara, California 93106, United States
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California─Santa Barbara, Santa Barbara, California 93106, United States
| | - Sheetal K Jain
- Department of Chemistry and Biochemistry, University of California─Santa Barbara, Santa Barbara, California 93106, United States.,Solid-State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Vladimir K Michaelis
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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3
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Reconstructing Reliable Powder Patterns from Spikelets (Q)CPMG NMR Spectra: Simplification of UWNMR Crystallography Analysis. Molecules 2021; 26:molecules26196051. [PMID: 34641595 PMCID: PMC8513071 DOI: 10.3390/molecules26196051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022] Open
Abstract
Spikelets NMR spectra are very popular as they enable the shortening of experimental time and give the possibility to obtain required NMR parameters for nuclei with ultrawide NMR patterns. Unfortunately, these resulted ssNMR spectra cannot be fitted directly in common software. For this reason, we developed UWNMRSpectralShape (USS) software which transforms spikelets NMR patterns into single continuous lines. Subsequently, these reconstructed spectral envelopes of the (Q)CPMG spikelets patterns can be loaded into common NMR software and automatically fitted, independently of experimental settings. This allows the quadrupole and chemical shift parameters to be accurately determined. Moreover, it makes fitting of spikelets NMR spectra exact, fast and straightforward.
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Griffith KJ, Ding F, Flynn S. Solid-state nuclear magnetic resonance of spin-9/2 nuclei 115 In and 209 Bi in functional inorganic complex oxides. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2021; 59:1077-1088. [PMID: 34081358 DOI: 10.1002/mrc.5183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 05/24/2021] [Accepted: 05/29/2021] [Indexed: 05/02/2023]
Abstract
Indium and bismuth are technologically important elements, in particular as oxides for optoelectronic applications. 115 In and 209 Bi are both I = 9/2 nuclei with high natural abundances and moderately high frequencies but large nuclear electric quadrupole moments. Leveraging the quadrupolar interaction as a measure of local symmetry and polyhedral distortions for these nuclei could provide powerful insights on a range of applied materials. However, the absence of reported nuclear magnetic resonance (NMR) parameters on these nuclei, particularly in oxides, hinders their use by the broader materials community. In this contribution, solid-state 115 In and 209 Bi NMR of three recently discovered quaternary bismuth or indium oxides are reported, supported by density functional theory calculations, numerical simulations, diffraction and additional multinuclear (27 Al, 69,71 Ga, and 121 Sb) solid-state NMR measurements. The compounds LiIn2 SbO6 , BiAlTeO6 , and BiGaTeO6 are measured without special equipment at 9.4 T, demonstrating that wideline techniques such as the QCPMG pulse sequence and frequency-stepped acquisition can enable straightforward extraction of quadrupolar tensor information in I = 9/2 115 In and 209 Bi even in sites with large quadrupolar coupling constants. Relationships are described between the NMR observables and local site symmetry. These are amongst the first reports of the NMR parameters of 115 In, 121 Sb, and 209 Bi in oxides.
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Affiliation(s)
- Kent J Griffith
- Department of Chemistry, Northwestern University, Evanston, Illinois, USA
| | - Fenghua Ding
- Department of Chemistry, Northwestern University, Evanston, Illinois, USA
| | - Steven Flynn
- Department of Chemistry, Northwestern University, Evanston, Illinois, USA
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5
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A novel Bi-based crystalline molecular material: fluorescence response of the high efficient detection and recognition of the organic amines and white luminescence tuning. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ning W, Bao J, Puttisong Y, Moro F, Kobera L, Shimono S, Wang L, Ji F, Cuartero M, Kawaguchi S, Abbrent S, Ishibashi H, De Marco R, Bouianova IA, Crespo GA, Kubota Y, Brus J, Chung DY, Sun L, Chen WM, Kanatzidis MG, Gao F. Magnetizing lead-free halide double perovskites. SCIENCE ADVANCES 2020; 6:6/45/eabb5381. [PMID: 33158858 PMCID: PMC7673701 DOI: 10.1126/sciadv.abb5381] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 09/16/2020] [Indexed: 05/30/2023]
Abstract
Spintronics holds great potential for next-generation high-speed and low-power consumption information technology. Recently, lead halide perovskites (LHPs), which have gained great success in optoelectronics, also show interesting magnetic properties. However, the spin-related properties in LHPs originate from the spin-orbit coupling of Pb, limiting further development of these materials in spintronics. Here, we demonstrate a new generation of halide perovskites, by alloying magnetic elements into optoelectronic double perovskites, which provide rich chemical and structural diversities to host different magnetic elements. In our iron-alloyed double perovskite, Cs2Ag(Bi:Fe)Br6, Fe3+ replaces Bi3+ and forms FeBr6 clusters that homogenously distribute throughout the double perovskite crystals. We observe a strong temperature-dependent magnetic response at temperatures below 30 K, which is tentatively attributed to a weak ferromagnetic or antiferromagnetic response from localized regions. We anticipate that this work will stimulate future efforts in exploring this simple yet efficient approach to develop new spintronic materials based on lead-free double perovskites.
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Affiliation(s)
- Weihua Ning
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Jinke Bao
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Yuttapoom Puttisong
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Fabrizo Moro
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Libor Kobera
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Seiya Shimono
- Department of Materials Science and Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan
| | - Linqin Wang
- Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Fuxiang Ji
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Maria Cuartero
- Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Sabina Abbrent
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Hiroki Ishibashi
- Department of Physical Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Roland De Marco
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD 4556, Australia
| | - Irina A Bouianova
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Gaston A Crespo
- Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Yoshiki Kubota
- Department of Physical Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Jiri Brus
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Licheng Sun
- Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
- Center of Artificial Photosynthesis for Solar Fuels, School of Science, Westlake University, Hangzhou 310024, China
| | - Weimin M Chen
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden
| | - Mercouri G Kanatzidis
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Feng Gao
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden.
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7
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Karmakar A, Bernard GM, Meldrum A, Oliynyk AO, Michaelis VK. Tailorable Indirect to Direct Band-Gap Double Perovskites with Bright White-Light Emission: Decoding Chemical Structure Using Solid-State NMR. J Am Chem Soc 2020; 142:10780-10793. [PMID: 32426971 DOI: 10.1021/jacs.0c02198] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Efficient white-light-emitting single-material sources are ideal for sustainable lighting applications. Though layered hybrid lead-halide perovskite materials have demonstrated attractive broad-band white-light emission properties, they pose a serious long-term environmental and health risk as they contain lead (Pb2+) and are readily soluble in water. Recently, lead-free halide double perovskite (HDP) materials with a generic formula A(I)2B'(III)B″(I)X6 (where A and B are cations and X is a halide ion) have demonstrated white-light emission with improved photoluminescence quantum yields (PLQYs). Here, we present a series of Bi3+/In3+ mixed-cationic Cs2Bi1-xInxAgCl6 HDP solid solutions that span the indirect to direct band-gap modification which exhibit tailorable optical properties. Density functional theory (DFT) calculations indicate an indirect-direct band-gap crossover composition when x > 0.50. These HDP materials emit over the entire visible light spectrum, centered at 600 ± 30 nm with full-width at half maxima of ca. 200 nm upon ultraviolet light excitation and a maximum PLQY of 34 ± 4% for Cs2Bi0.085In0.915AgCl6. Short-range structural insight for these materials is crucial to unravel the unique atomic-level structural properties which are difficult to distinguish by diffraction-based techniques. Hence, we demonstrate the advantage of using solid-state nuclear magnetic resonance (NMR) spectroscopy to deconvolute the local structural environments of these mixed-cationic HDPs. Using ultrahigh-field (21.14 T) NMR spectroscopy of quadrupolar nuclei (115In, 133Cs, and 209Bi), we show that there is a high degree of atomic-level B'(III)/B″(I) site ordering (i.e., no evidence of antisite defects). Furthermore, a combination of XRD, NMR, and DFT calculations was used to unravel the complete atomic-level random Bi3+/In3+ cationic mixing in Cs2Bi1-xInxAgCl6 HDPs. Briefly, this work provides an advance in understanding the photophysical properties that correlate long- to short-range structural elucidation of these newly developed solid-state white-light emitting HDP materials.
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Affiliation(s)
- Abhoy Karmakar
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Guy M Bernard
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Alkiviathes Meldrum
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Anton O Oliynyk
- Chemistry and Biochemistry Department, Manhattan College, Riverdale, New York 10471, United States
| | - Vladimir K Michaelis
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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8
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Redondo-Obispo C, Suárez I, Quesada SJ, Ripolles TS, Martínez-Pastor JP, Álvarez AL, de Andrés A, Coya C. Enhanced Nonlinear Optical Coefficients of MAPbI 3 Thin Films by Bismuth Doping. J Phys Chem Lett 2020; 11:2188-2194. [PMID: 32068409 DOI: 10.1021/acs.jpclett.0c00319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The poor photostability under ambient conditions of hybrid halide perovskites has hindered their recently explored promising nonlinear optical properties. Here, we show how Bi3+ can partially substitute Pb2+ homogeneously in the commonly studied MAPbI3, improving both environmental stability and photostability under high laser irradiation. Bi content around 2 atom % produces thin films where the nonlinear refractive (n2) and absorptive coefficients (β), which modify the refractive index (Δn) of the material with light fluence (I), increase up to factors of 4 and 3.5, respectively, compared to undoped MAPbI3. Higher doping inhibits the nonlinear parameters; however, the samples show higher fluence damage thresholds. Thus, these results provide a road map on how MAPbI3 can be engineered for practical cost-effective nonlinear applications by means of Bi doping, including optical limiting devices and multiple-harmonic generation into optoelectronics devices.
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Affiliation(s)
- C Redondo-Obispo
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
| | - I Suárez
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
- UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, 46071 Valencia, Spain
| | - S J Quesada
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
| | - T S Ripolles
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
| | - J P Martínez-Pastor
- UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, 46071 Valencia, Spain
| | - A L Álvarez
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
| | - A de Andrés
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Carmen Coya
- Escuela Técnica Superior de Ingeniería de Telecomunicación, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain
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Leroy C, Bryce DL. Recent advances in solid-state nuclear magnetic resonance spectroscopy of exotic nuclei. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2018; 109:160-199. [PMID: 30527135 DOI: 10.1016/j.pnmrs.2018.08.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/18/2018] [Accepted: 08/10/2018] [Indexed: 06/09/2023]
Abstract
We present a review of recent advances in solid-state nuclear magnetic resonance (SSNMR) studies of exotic nuclei. Exotic nuclei may be spin-1/2 or quadrupolar, and typically have low gyromagnetic ratios, low natural abundances, large quadrupole moments (when I > 1/2), or some combination of these properties, generally resulting in low receptivities and/or prohibitively broad line widths. Some nuclides are little studied for other reasons, also rendering them somewhat exotic. We first discuss some of the recent progress in pulse sequences and hardware development which continues to enable researchers to study new kinds of materials as well as previously unfeasible nuclei. This is followed by a survey of applications to a wide range of exotic nuclei (including e.g., 9Be, 25Mg, 33S, 39K, 43Ca, 47/49Ti, 53Cr, 59Co, 61Ni, 67Zn, 73Ge, 75As, 87Sr, 115In, 119Sn, 121/123Sb, 135/137Ba, 185/187Re, 209Bi), most of them quadrupolar. The scope of the review is the past ten years, i.e., 2007-2017.
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Affiliation(s)
- César Leroy
- Department of Chemistry and Biomolecular Sciences & Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario K1N 6N5, Canada
| | - David L Bryce
- Department of Chemistry and Biomolecular Sciences & Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario K1N 6N5, Canada.
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10
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Makrinich M, Nimerovsky E, Goldbourt A. Pushing the limit of NMR-based distance measurements - retrieving dipolar couplings to spins with extensively large quadrupolar frequencies. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2018; 92:19-24. [PMID: 29751342 DOI: 10.1016/j.ssnmr.2018.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
Dipolar recoupling under magic-angle spinning allows to measure accurate inter-nuclear distances provided that the two interacting spins can be efficiently and uniformly excited. Alexander (Lex) Vega has shown that adiabatic transfers of populations in quadrupolar spins during the application of constant-wave (cw) radio-frequency pulses lead to efficient and quantifiable dipolar recoupling curves. Accurate distance determination within and beyond the adiabatic regime using cw pulses is limited by the size of the quadrupolar coupling constant. Here we show that using the approach of long-pulse phase modulation, dipolar recoupling and accurate distances can be obtained for nuclei having extensively large quadrupolar frequencies of 5-10 MHz. We demonstrate such results by obtaining a 31P-79/81Br distance in a compound for which bromine-79 (spin-3/2) has a quadrupolar coupling constant of 11.3 MHz, and a 13C-209Bi distance where the bismuth (spin-9/2) has a quadrupolar coupling constant of 256 MHz, equaling a quadrupolar frequency of 10.7 MHz. For Bromine, we demonstrate that an analytical curve based on the assumption of complete spin saturation fits the data. In the case of bismuth acetate, a C-Bi3 spin system must be used in order to match the correct saturation recoupling curve, and results are in agreement with the crystallographic structure.
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Affiliation(s)
- M Makrinich
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
| | - E Nimerovsky
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
| | - A Goldbourt
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel.
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Laurencin D, Ribot F, Gervais C, Wright AJ, Baker AR, Campayo L, Hanna JV, Iuga D, Smith ME, Nedelec JM, Renaudin G, Bonhomme C. 87Sr,119Sn,127I Single and {1H/19F}-Double Resonance Solid-State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks. ChemistrySelect 2016. [DOI: 10.1002/slct.201600805] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Danielle Laurencin
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-UM-ENSCM; Université de Montpellier; Montpellier France
| | - François Ribot
- Sorbonne Universités; UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris 75005 Paris France
| | - Christel Gervais
- Sorbonne Universités; UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris 75005 Paris France
| | - Adrian J. Wright
- School of Chemistry; University of Birmingham, Edgbaston; Birmingham B15 2TT UK
| | - Annabelle R. Baker
- Diamond Light Source; Harwell Science and Innovation Campus; Didcot OX11 0DE UK
| | - Lionel Campayo
- CEA, DEN, DTCD, SECM; Laboratoire d'Etude et de Développement de Matrices de Conditionnement, Centre de Marcoule; 30207 Bagnols sur Cèze France
| | - John V. Hanna
- Department of Physics; University of Warwick; Coventry CV4 7AL UK
| | - Dinu Iuga
- Department of Physics; University of Warwick; Coventry CV4 7AL UK
| | - Mark E. Smith
- Department of Physics; University of Warwick; Coventry CV4 7AL UK
- Vice-Chancellor's Office, University House; Lancaster University; Lancaster LA1 4YW UK
| | - Jean-Marie Nedelec
- ICCF, CNRS UMR 6295, SIGMA Clermont; Université Clermont Auvergne, Campus des Céseaux; CS 20265 Aubière France
| | - Guillaume Renaudin
- ICCF, CNRS UMR 6295, SIGMA Clermont; Université Clermont Auvergne, Campus des Céseaux; CS 20265 Aubière France
| | - Christian Bonhomme
- Sorbonne Universités; UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris 75005 Paris France
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13
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Widdifield CM, Perras FA, Bryce DL. Solid-state (185/187)Re NMR and GIPAW DFT study of perrhenates and Re2(CO)10: chemical shift anisotropy, NMR crystallography, and a metal-metal bond. Phys Chem Chem Phys 2015; 17:10118-34. [PMID: 25790263 DOI: 10.1039/c5cp00602c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Advances in solid-state nuclear magnetic resonance (SSNMR) methods, such as dynamic nuclear polarization (DNP), intricate pulse sequences, and increased applied magnetic fields, allow for the study of systems which even very recently would be impractical. However, SSNMR methods using certain quadrupolar probe nuclei (i.e., I > 1/2), such as (185/187)Re remain far from fully developed due to the exceedingly strong interaction between the quadrupole moment of these nuclei and local electric field gradients (EFGs). We present a detailed high-field (B0 = 21.1 T) experimental SSNMR study on several perrhenates (KReO4, AgReO4, Ca(ReO4)2·2H2O), as well as ReO3 and Re2(CO)10. We propose solid ReO3 as a new rhenium SSNMR chemical shift standard due to its reproducible and sharp (185/187)Re NMR resonances. We show that for KReO4, previously poorly understood high-order quadrupole-induced effects (HOQIE) on the satellite transitions can be used to measure the EFG tensor asymmetry (i.e., ηQ) to nearly an order-of-magnitude greater precision than competing SSNMR and nuclear quadrupole resonance (NQR) approaches. Samples of AgReO4 and Ca(ReO4)2·2H2O enable us to comment on the effects of counter-ions and hydration upon Re(vii) chemical shifts. Calcium-43 and (185/187)Re NMR tensor parameters allow us to conclude that two proposed crystal structures for Ca(ReO4)2·2H2O, which would be considered as distinct, are in fact the same structure. Study of Re2(CO)10 provides insights into the effects of Re-Re bonding on the rhenium NMR tensor parameters and rhenium oxidation state on the Re chemical shift value. As overtone NQR experiments allowed us to precisely measure the (185/187)Re EFG tensor of Re2(CO)10, we were able to measure rhenium chemical shift anisotropy (CSA) for the first time in a powdered sample. Experimental observations are supported by gauge-including projector augmented-wave (GIPAW) density functional theory (DFT) calculations, with NMR tensor calculations also provided for NH4ReO4, NaReO4 and RbReO4. These calculations are able to reproduce many of the experimental trends in rhenium δiso values and EFG tensor magnitudes. Using KReO4 as a prototypical perrhenate-containing system, we establish a correlation between the tetrahedral shear strain parameter (|ψ|) and the nuclear electric quadrupolar coupling constant (CQ), which enables the refinement of the structure of ND4ReO4. Shortcomings in traditional DFT approaches, even when including relativistic effects via the zeroth-order regular approximation (ZORA), for calculating rhenium NMR tensor parameters are identified for Re2(CO)10.
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Affiliation(s)
- Cory M Widdifield
- Department of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario, Canada.
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14
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Nowak B. Comment on the reference compound for chemical shift and Knight shift determination of (209)Bi nuclei. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2015; 66-67:49-50. [PMID: 25534279 DOI: 10.1016/j.ssnmr.2014.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 11/27/2014] [Accepted: 12/02/2014] [Indexed: 06/04/2023]
Abstract
Several groups exploring the (209)Bi NMR in solids, including usual insulators, metallic and magnetic materials and recently diamagnetic topological materials, use different standards (usually old and invalid) for chemical shift (Knight shift) determination, ignoring IUPAC recommendations. As a consequence the published shift values exhibit considerable differences (up to 17,500 ppm).
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Affiliation(s)
- Bogdan Nowak
- W. Trzebiatowski Institute for Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław, Poland.
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15
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Hamaed H, Johnston KE, Cooper BFT, Terskikh VV, Ye E, Macdonald CLB, Arnold DC, Schurko RW. A115In solid-state NMR study of low oxidation-state indium complexes. Chem Sci 2014. [DOI: 10.1039/c3sc52809j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Njegic B, Levin EM, Schmidt-Rohr K. 125Te NMR chemical-shift trends in PbTe-GeTe and PbTe-SnTe alloys. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2013; 55-56:79-83. [PMID: 24148972 DOI: 10.1016/j.ssnmr.2013.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 06/02/2023]
Abstract
Complex tellurides, such as doped PbTe, GeTe, and their alloys, are among the best thermoelectric materials. Knowledge of the change in (125)Te NMR chemical shift due to bonding to dopant or "solute" atoms is useful for determination of phase composition, peak assignment, and analysis of local bonding. We have measured the (125)Te NMR chemical shifts in PbTe-based alloys, Pb1-xGexTe and Pb1-xSnxTe, which have a rocksalt-like structure, and analyzed their trends. For low x, several peaks are resolved in the 22-kHz MAS (125)Te NMR spectra. A simple linear trend in chemical shifts with the number of Pb neighbors is observed. No evidence of a proposed ferroelectric displacement of Ge atoms in a cubic PbTe matrix is detected at low Ge concentrations. The observed chemical shift trends are compared with the results of DFT calculations, which confirm the linear dependence on the composition of the first-neighbor shell. The data enable determination of the composition of various phases in multiphase telluride materials. They also provide estimates of the (125)Te chemical shifts of GeTe and SnTe (+970 and +400±150 ppm, respectively, from PbTe), which are otherwise difficult to access due to Knight shifts of many hundreds of ppm in neat GeTe and SnTe.
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Affiliation(s)
- B Njegic
- Division of Materials Sciences and Engineering, Ames Laboratory U.S. DOE, Ames, IA 50011, USA; Department of Chemistry, Iowa State University, Ames, IA 50011, USA
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17
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O'Dell LA. The WURST kind of pulses in solid-state NMR. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2013; 55-56:28-41. [PMID: 24183812 DOI: 10.1016/j.ssnmr.2013.10.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/07/2013] [Accepted: 10/07/2013] [Indexed: 06/02/2023]
Abstract
WURST pulses (wideband, uniform rate, smooth truncation) were first introduced two decades ago by Kupče and Freeman as a means of achieving broadband adiabatic inversion of magnetisation for solution-state (13)C decoupling at high magnetic field strengths. In more recent years these pulses have found use in an increasingly diverse range of applications in solid-state NMR. This article reviews a number of recent developments that take advantage of WURST pulses, including broadband excitation, refocusing and cross polarisation for the acquisition of ultra-wideline powder patterns, signal enhancement for half-integer and integer spin quadrupolar nuclei, spectral editing, direct and indirectly observed (14)N overtone MAS, and symmetry-based homonuclear recoupling. Simple mathematical descriptions of WURST pulses and some brief theory behind their operation in the adiabatic and non-adiabatic regimes are provided, and various practical considerations for their use are also discussed.
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Affiliation(s)
- Luke A O'Dell
- Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong, Victoria 3220, Australia.
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Abstract
Although solid-state NMR (SSNMR) provides rich information about molecular structure and dynamics, the small spin population differences between pairs of spin states that give rise to NMR transitions make it an inherently insensitive spectroscopic technique in terms of signal acquisition. Scientists have continuously addressed this issue via improvements in NMR hardware and probes, increases in the strength of the magnetic field, and the development of innovative pulse sequences and acquisition methodologies. As a result, researchers can now study NMR-active nuclides previously thought to be unobservable or too unreceptive for routine examination via SSNMR. Several factors can make it extremely challenging to detect signal or acquire spectra using SSNMR: (i) low gyromagnetic ratios (i.e., low Larmor frequencies), (ii) low natural abundances or dilution of the nuclide of interest (e.g., metal nuclides in proteins or in organometallic catalysts supported on silica), (iii) inconvenient relaxation characteristics (e.g., very long longitudinal or very short transverse relaxation times), and/or (iv) extremely broad powder patterns arising from large anisotropic NMR interactions. Our research group has been particularly interested in efficient acquisition of broad NMR powder patterns for a variety of spin-1/2 and quadrupolar (spin > 1/2) nuclides. Traditionally, researchers have used the term "wideline" NMR to refer to experiments yielding broad (1)H and (2)H SSNMR spectra ranging from tens of kHz to ∼250 kHz in breadth. With modern FT NMR hardware, uniform excitation in these spectral ranges is relatively easy, allowing for the acquisition of high quality spectra. However, spectra that range in breadth from ca. 250 kHz to tens of MHz cannot be uniformly excited with conventional, high-power rectangular pulses. Rather, researchers must apply special methodologies to acquire such spectra, which have inherently low S/N because the signal intensity is spread across such large spectral breadths. We have suggested the term ultra-wideline NMR (UWNMR) spectroscopy to describe this set of methodologies. This Account describes recent developments in pulse sequences and strategies for the efficient acquisition of UWNMR spectra. After an introduction to anisotropically broadened NMR patterns, we give a brief history of methods used to acquire UWNMR spectra. We then discuss new acquisition methodologies, including the acquisition of CPMG echo trains and the application of pulses capable of broadband excitation and refocusing. Finally, we present several applications of UWNMR methods that use these broadband pulses.
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Affiliation(s)
- Robert W. Schurko
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada N9B 3P4
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Perras FA, Viger-Gravel J, Burgess KMN, Bryce DL. Signal enhancement in solid-state NMR of quadrupolar nuclei. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2013; 51-52:1-15. [PMID: 23336997 DOI: 10.1016/j.ssnmr.2012.11.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 11/13/2012] [Accepted: 11/18/2012] [Indexed: 06/01/2023]
Abstract
Recent progress in the development and application of signal enhancement methods for NMR of quadrupolar nuclei in solids is presented. First, various pulse schemes for manipulating the populations of the satellite transitions in order to increase the signal of the central transition (CT) in stationary and rotating solids are evaluated (e.g., double-frequency sweeps, hyperbolic secant pulses). Second, the utility of the quadrupolar Carr-Purcell-Meiboom-Gill (QCPMG) and WURST-QCPMG pulse sequences for the rapid and efficient acquisition of particularly broad CT powder patterns is discussed. Third, less frequently used experiments involving polarization transfer from abundant nuclear spins (cross-polarization) or from unpaired electrons (dynamic nuclear polarization) are assessed in the context of recent examples. Advantages and disadvantages of particular enhancement schemes are highlighted and an outlook on possible future directions for the signal enhancement of quadrupolar nuclei in solids is offered.
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Affiliation(s)
- Frédéric A Perras
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada
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20
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A combined ultra-wideline solid-state NMR and DFT study of 137Ba electric field gradient tensors in barium compounds. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.02.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Farooq H, Courtier-Murias D, Soong R, Masoom H, Maas W, Fey M, Kumar R, Monette M, Stronks H, Simpson MJ, Simpson AJ. Rapid parameter optimization of low signal-to-noise samples in NMR spectroscopy using rapid CPMG pulsing during acquisition: application to recycle delays. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2013; 51:129-135. [PMID: 23322645 DOI: 10.1002/mrc.3923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 12/11/2012] [Accepted: 12/16/2012] [Indexed: 06/01/2023]
Abstract
A method is presented that combines Carr-Purcell-Meiboom-Gill (CPMG) during acquisition with either selective or nonselective excitation to produce a considerable intensity enhancement and a simultaneous loss in chemical shift information. A range of parameters can theoretically be optimized very rapidly on the basis of the signal from the entire sample (hard excitation) or spectral subregion (soft excitation) and should prove useful for biological, environmental, and polymer samples that often exhibit highly dispersed and broad spectral profiles. To demonstrate the concept, we focus on the application of our method to T(1) determination, specifically for the slowest relaxing components in a sample, which ultimately determines the optimal recycle delay in quantitative NMR. The traditional inversion recovery (IR) pulse program is combined with a CPMG sequence during acquisition. The slowest relaxing components are selected with a shaped pulse, and then, low-power CPMG echoes are applied during acquisition with intervals shorter than chemical shift evolution (RCPMG) thus producing a single peak with an SNR commensurate with the sum of the signal integrals in the selected region. A traditional (13)C IR experiment is compared with the selective (13)C IR-RCPMG sequence and yields the same T(1) values for samples of lysozyme and riverine dissolved organic matter within error. For lysozyme, the RCPMG approach is ~70 times faster, and in the case of dissolved organic matter is over 600 times faster. This approach can be adapted for the optimization of a host of parameters where chemical shift information is not necessary, such as cross-polarization/mixing times and pulse lengths.
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Affiliation(s)
- Hashim Farooq
- Department of Chemistry, University of Toronto, 1265 Military Trail, Toronto, ON, Canada, M1C 1A4
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22
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Cuny J, Cordier S, Perrin C, Pickard CJ, Delevoye L, Trébosc J, Gan Z, Pollès LL, Gautier R. 95Mo Solid-State Nuclear Magnetic Resonance Spectroscopy and Quantum Simulations: Synergetic Tools for the Study of Molybdenum Cluster Materials. Inorg Chem 2012; 52:617-27. [DOI: 10.1021/ic301648s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jérôme Cuny
- Institut des Sciences Chimiques
de Rennes, UMR 6226, CNRS - Université de Rennes 1 - Ecole Nationale Supérieure de Chimie de Rennes,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Stéphane Cordier
- Institut des Sciences Chimiques
de Rennes, UMR 6226, CNRS - Université de Rennes 1 - Ecole Nationale Supérieure de Chimie de Rennes,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Christiane Perrin
- Institut des Sciences Chimiques
de Rennes, UMR 6226, CNRS - Université de Rennes 1 - Ecole Nationale Supérieure de Chimie de Rennes,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Chris J. Pickard
- Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, U.K
| | - Laurent Delevoye
- Unité de Catalyse et
Chimie du Solide, UMR 8181, CNRS - Université de Lille 1, 59655 Villeneuve d’Ascq, France
| | - Julien Trébosc
- Unité de Catalyse et
Chimie du Solide, UMR 8181, CNRS - Université de Lille 1, 59655 Villeneuve d’Ascq, France
| | - Zhehong Gan
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee,
Florida 32310, United States
| | - Laurent Le Pollès
- Institut des Sciences Chimiques
de Rennes, UMR 6226, CNRS - Université de Rennes 1 - Ecole Nationale Supérieure de Chimie de Rennes,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Régis Gautier
- Institut des Sciences Chimiques
de Rennes, UMR 6226, CNRS - Université de Rennes 1 - Ecole Nationale Supérieure de Chimie de Rennes,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
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23
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Bonhomme C, Gervais C, Babonneau F, Coelho C, Pourpoint F, Azaïs T, Ashbrook SE, Griffin JM, Yates JR, Mauri F, Pickard CJ. First-principles calculation of NMR parameters using the gauge including projector augmented wave method: a chemist's point of view. Chem Rev 2012; 112:5733-79. [PMID: 23113537 DOI: 10.1021/cr300108a] [Citation(s) in RCA: 318] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Christian Bonhomme
- Laboratoire de Chimie de la Matière Condensée de Paris, Université Pierre et Marie Curie, CNRS UMR, Collège de France, France.
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24
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Bonhomme C, Gervais C, Folliet N, Pourpoint F, Coelho Diogo C, Lao J, Jallot E, Lacroix J, Nedelec JM, Iuga D, Hanna JV, Smith ME, Xiang Y, Du J, Laurencin D. 87Sr Solid-State NMR as a Structurally Sensitive Tool for the Investigation of Materials: Antiosteoporotic Pharmaceuticals and Bioactive Glasses. J Am Chem Soc 2012; 134:12611-28. [DOI: 10.1021/ja303505g] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Christian Bonhomme
- Laboratoire Chimie de la Matière
Condensée de Paris, UMR CNRS 7574, UPMC Université Paris 06, Collège de France, 11 place Marcelin
Berthelot, 75231 Paris Cedex 05, France
| | - Christel Gervais
- Laboratoire Chimie de la Matière
Condensée de Paris, UMR CNRS 7574, UPMC Université Paris 06, Collège de France, 11 place Marcelin
Berthelot, 75231 Paris Cedex 05, France
| | - Nicolas Folliet
- Laboratoire Chimie de la Matière
Condensée de Paris, UMR CNRS 7574, UPMC Université Paris 06, Collège de France, 11 place Marcelin
Berthelot, 75231 Paris Cedex 05, France
| | - Frédérique Pourpoint
- Laboratoire Chimie de la Matière
Condensée de Paris, UMR CNRS 7574, UPMC Université Paris 06, Collège de France, 11 place Marcelin
Berthelot, 75231 Paris Cedex 05, France
| | - Cristina Coelho Diogo
- IMPC, Institut des Matériaux
de Paris Centre, FR2482, UPMC Université Paris 06, Collège de France, 11 place Marcelin Berthelot,
75231 Paris Cedex 05, France
| | - Jonathan Lao
- Clermont Université, Université
Blaise Pascal, CNRS/IN2P3, Laboratoire de Physique
Corpusculaire, BP 10448, 63000 Clermont-Ferrand, France
| | - Edouard Jallot
- Clermont Université, Université
Blaise Pascal, CNRS/IN2P3, Laboratoire de Physique
Corpusculaire, BP 10448, 63000 Clermont-Ferrand, France
| | - Joséphine Lacroix
- Clermont Université, Université
Blaise Pascal, CNRS/IN2P3, Laboratoire de Physique
Corpusculaire, BP 10448, 63000 Clermont-Ferrand, France
| | - Jean-Marie Nedelec
- Clermont Université, ENSCCF, ICCF, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR
6296, ICCF, F-63177 Aubière
| | - Dinu Iuga
- Department of Physics, University of Warwick, CV4 7AL Coventry, U.K
| | - John V. Hanna
- Department of Physics, University of Warwick, CV4 7AL Coventry, U.K
| | - Mark E. Smith
- Department of Physics, University of Warwick, CV4 7AL Coventry, U.K
- Vice-Chancellor’s Office,
University House, Lancaster University,
LA1 4YW, Lancaster, U.K
| | - Ye Xiang
- Department
of Materials Science and
Engineering, CASCaM, University of North Texas, Denton, Texas 76203, United States
| | - Jincheng Du
- Department
of Materials Science and
Engineering, CASCaM, University of North Texas, Denton, Texas 76203, United States
| | - Danielle Laurencin
- Institut Charles Gerhardt de Montpellier,
UMR 5253, CNRS UM2 UM1 ENSCM, CC 1701 Université de Montpellier 2, Place E. Bataillon, 34095 Montpellier
cedex 5, France
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25
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Perras FA, Widdifield CM, Bryce DL. QUEST-QUadrupolar Exact SofTware: a fast graphical program for the exact simulation of NMR and NQR spectra for quadrupolar nuclei. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2012; 45-46:36-44. [PMID: 22763585 DOI: 10.1016/j.ssnmr.2012.05.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/15/2012] [Accepted: 05/16/2012] [Indexed: 05/28/2023]
Abstract
We present a new program for the exact simulation of solid-state NMR spectra of quadrupolar nuclei in stationary powdered samples which employs diagonalization of the combined Zeeman-quadrupolar Hamiltonian. The program, which we call QUEST (QUadrupolar Exact SofTware), can simulate NMR spectra over the full regime of Larmor and quadrupolar frequency ratios, which encompasses scenarios ranging from high-field NMR to nuclear quadrupole resonance (NQR, where the Larmor frequency is zero) and does not make use of approximations when treating the quadrupolar interaction. With the use of the fast powder averaging scheme of Alderman, Solum, and Grant, exact NMR spectral simulations are only marginally slower than the second-order perturbation theory counterpart. The program, which uses a graphical user interface, also incorporates chemical shift anisotropy and non-coincident chemical shift and quadrupolar tensor frames. The program is validated against newly-acquired experimental data through several examples including: the low-field (79/81)Br NMR spectra of CaBr(2), the (14)N overtone NMR spectrum of glycine, the (187)Re NQR spectra of Re(2)(CO)(10), and lastly the (127)I overtone NQR spectrum of SrI(2), which, to the best of our knowledge, represents the first direct acquisition of an overtone NQR spectrum for a powdered sample.
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Affiliation(s)
- Frédéric A Perras
- Department of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, Canada
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26
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Wong A, Smith ME, Terskikh V, Wu G. Obtaining accurate chemical shifts for all magnetic nuclei (1H, 13C, 17O, and 27Al) in tris(2,4-pentanedionato-O,O′)aluminium(III) — A solid-state NMR case study. CAN J CHEM 2011. [DOI: 10.1139/v11-046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report a complete set of high-resolution solid-state NMR spectra for all magnetic nuclei (1H, 13C, 17O, and 27Al) in the α-form of tris(2,4-pentanedionato-O,O′)aluminium(III), α-Al(acac)3. These high-resolution NMR spectra were obtained by using a host of solid-state NMR techniques: standard cross-polarization under the magic-angle spinning (CPMAS) method for 13C, 1-D homonuclear decoupling using the windowed DUMBO sequence for 1H, double-rotation (DOR) for 17O and 27Al, and multiple-quantum MAS for 27Al. Some experiments were performed at multiple magnetic fields. We show that the isotropic chemical shifts obtained for 1H, 13C, 17O, and 27Al nuclei in α-Al(acac)3 are highly resolved and accurate, regardless of the nature of the targeted nuclear spins (i.e., spin-1/2 or quadrupolar) and, as such, can be treated equally in comparison with computational chemical shifts obtained from a gauge-including projector-augmented wave (GIPAW) plane-wave pseudopotential DFT method.
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Affiliation(s)
- Alan Wong
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Mark E. Smith
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Victor Terskikh
- Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, ON K1A 0R6, Canada
| | - Gang Wu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
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André V, Hardeman A, Halasz I, Stein RS, Jackson GJ, Reid DG, Duer MJ, Curfs C, Duarte MT, Friščić T. Mechanosynthesis of the metallodrug bismuth subsalicylate from Bi2O3 and structure of bismuth salicylate without auxiliary organic ligands. Angew Chem Int Ed Engl 2011; 50:7858-61. [PMID: 21739550 DOI: 10.1002/anie.201103171] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 05/24/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Vânia André
- Centro de Quimica Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, Portugal
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28
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Mechanosynthesis of the Metallodrug Bismuth Subsalicylate from Bi2O3 and Structure of Bismuth Salicylate without Auxiliary Organic Ligands. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103171] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Lucier BE, Reidel AR, Schurko RW. Multinuclear solid-state NMR of square-planar platinum complexes — Cisplatin and related systems. CAN J CHEM 2011. [DOI: 10.1139/v11-033] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Multinuclear solid-state nuclear magnetic resonance (SSNMR) experiments have been performed on cisplatin and four related square-planar compounds. The wideband uniform rate smooth truncation – Carr–Purcell–Meiboom–Gill (WURST–CPMG) pulse sequence was utilized in NMR experiments to acquire 195Pt, 14N, and 35Cl ultra-wideline NMR spectra of high quality. Standard Hahn-echo and magic-angle spinning 195Pt NMR experiments are also performed to refine extracted chemical shielding (CS) tensor parameters. Platinum magnetic shielding (MS) tensor orientations are calculated using both plane-wave density functional theory (DFT) and standard DFT methods. The tensor orientations are shown to be highly constrained by molecular symmetry elements, but also influenced to some degree by intermolecular interactions. 14N WURST–CPMG experiments were performed on three compounds and electric field gradient (EFG) parameters (the quadrupolar coupling constant, CQ, and the asymmetry parameter, ηQ) are reported. First principles calculations of the 14N EFG tensor parameters and orientations and affirm their dependence on the local hydrogen bonding environment. 35Cl WURST–CPMG experiments on cisplatin and transplatin are reported, using two different static magnetic fields to extract EFG and CS tensor parameters, and 35Cl EFG tensor magnitudes and orientations are predicted using first principles calculations. Transverse (T2) relaxation data for all nuclei are used to investigate heteronuclear dipolar relaxation mechanisms, as well as the nature of the local hydrogen bonding environments.
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Affiliation(s)
- Bryan E.G. Lucier
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Alex R. Reidel
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Robert W. Schurko
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
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Charpentier T. The PAW/GIPAW approach for computing NMR parameters: a new dimension added to NMR study of solids. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2011; 40:1-20. [PMID: 21612895 DOI: 10.1016/j.ssnmr.2011.04.006] [Citation(s) in RCA: 235] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 04/24/2011] [Accepted: 04/25/2011] [Indexed: 05/18/2023]
Abstract
In 2001, Mauri and Pickard introduced the gauge including projected augmented wave (GIPAW) method that enabled for the first time the calculation of all-electron NMR parameters in solids, i.e. accounting for periodic boundary conditions. The GIPAW method roots in the plane wave pseudopotential formalism of the density functional theory (DFT), and avoids the use of the cluster approximation. This method has undoubtedly revitalized the interest in quantum chemical calculations in the solid-state NMR community. It has quickly evolved and improved so that the calculation of the key components of NMR interactions, namely the shielding and electric field gradient tensors, has now become a routine for most of the common nuclei studied in NMR. Availability of reliable implementations in several software packages (CASTEP, Quantum Espresso, PARATEC) make its usage more and more increasingly popular, maybe indispensable in near future for all material NMR studies. The majority of nuclei of the periodic table have already been investigated by GIPAW, and because of its high accuracy it is quickly becoming an essential tool for interpreting and understanding experimental NMR spectra, providing reliable assignments of the observed resonances to crystallographic sites or enabling a priori prediction of NMR data. The continuous increase of computing power makes ever larger (and thus more realistic) systems amenable to first-principles analysis. In the near future perspectives, as the incorporation of dynamical effects and/or disorder are still at their early developments, these areas will certainly be the prime target.
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Affiliation(s)
- Thibault Charpentier
- CEA, IRAMIS, SIS2M, Laboratoire de Structure et Dynamique par Résonance Magnétique, UMR CEA-CNRS 3299, F-91191 Gif-sur-Yvette cedex, France.
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MacGregor AW, O'Dell LA, Schurko RW. New methods for the acquisition of ultra-wideline solid-state NMR spectra of spin-1/2 nuclides. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 208:103-113. [PMID: 21130011 DOI: 10.1016/j.jmr.2010.10.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 10/15/2010] [Accepted: 10/16/2010] [Indexed: 05/30/2023]
Abstract
The Wideband Uniform Rate Smooth Truncation - Carr-Purcell Meiboom-Gill (WURST-CPMG) pulse sequence was recently introduced as a new method of acquiring ultra-wideline solid-state NMR (SSNMR) patterns of quadrupolar nuclei (Chem. Phys. Lett. 464 (2008) 97). Herein, we describe the application of the WURST-CPMG pulse sequence to stationary samples (i.e., non-spinning or "static" samples) of various spin-1/2 nuclides ((119)Sn, (207)Pb, (199)Hg and (195)Pt) in order to examine its effectiveness for acquiring ultra-wideline SSNMR patterns. WURST-CPMG is compared to the CPMG and Cross Polarization (CP)-CPMG pulse sequences in select cases ((119)Sn and (207)Pb, respectively), and its usefulness in obtaining ultra-wideline SSNMR spectra in a piecewise fashion is explored. In addition, a preliminary investigation of pulses generated using optimal control theory (OCT) for the purpose of wideline excitation is presented; spectra acquired using these pulses are compared with standard, rectangular pulses of similar pulse powers. Both methods show much promise for acquiring high quality wideline patterns dominated by chemical shift anisotropy, with minimal distortions and significantly reduced experimental times.
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Affiliation(s)
- Alan W MacGregor
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
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Fernandez C, Pruski M. Probing quadrupolar nuclei by solid-state NMR spectroscopy: recent advances. Top Curr Chem (Cham) 2011; 306:119-88. [PMID: 21656101 DOI: 10.1007/128_2011_141] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Solid-state nuclear magnetic resonance (NMR) of quadrupolar nuclei has recently undergone remarkable development of capabilities for obtaining structural and dynamic information at the molecular level. This review summarizes the key achievements attained during the last couple of decades in solid-state NMR of both integer spin and half-integer spin quadrupolar nuclei. We provide a concise description of the first- and second-order quadrupolar interactions, and their effect on the static and magic angle spinning (MAS) spectra. Methods are explained for efficient excitation of single- and multiple-quantum coherences, and acquisition of spectra under low- and high-resolution conditions. Most of all, we present a coherent, comparative description of the high-resolution methods for half-integer quadrupolar nuclei, including double rotation (DOR), dynamic angle spinning (DAS), multiple-quantum magic angle spinning (MQMAS), and satellite transition magic angle spinning (STMAS). Also highlighted are methods for processing and analysis of the spectra. Finally, we review methods for probing the heteronuclear and homonuclear correlations between the quadrupolar nuclei and their quadrupolar or spin-1/2 neighbors.
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Cuny J, Yates JR, Gautier R, Furet E, Le Fur E, Le Pollès L. Electric field gradient calculations in paramagnetic compounds using the PAW approach. Application to ²³Na NMR in layered vanadium phosphates. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48 Suppl 1:S171-S175. [PMID: 20818802 DOI: 10.1002/mrc.2674] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This article presents ab initio calculations of electric field gradient (EFG) parameters as a tool for the structural characterization of paramagnetic crystalline compounds. Previously reported ²³Na NMR parameters of vanadium + IV containing vanado-phosphate compounds were computed within density functional theory using both cluster and fully periodic approaches. Quadrupolar parameter values measured by ²³Na NMR experiments were reproduced with a level of accuracy comparable to that achievable in diamagnetic compounds and allowed the assignment of observed ²³Na NMR signals. This work demonstrates the utility of the periodic planewave pseudopotential + PAW approach for the calculation of EFG parameters in paramagnetic compounds.
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Affiliation(s)
- J Cuny
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226 Sciences Chimiques de Rennes, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France
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Widdifield CM, Bryce DL. Solid-State 127I NMR and GIPAW DFT Study of Metal Iodides and Their Hydrates: Structure, Symmetry, and Higher-Order Quadrupole-Induced Effects. J Phys Chem A 2010; 114:10810-23. [DOI: 10.1021/jp108237x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Cory M. Widdifield
- Department of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario, Canada
| | - David L. Bryce
- Department of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario, Canada
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Electron and vibrational spectroscopies using DFT, plane waves and pseudopotentials: CASTEP implementation. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2009.12.040] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Affiliation(s)
- Shi Bai
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
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Hung I, Gan Z. On the practical aspects of recording wideline QCPMG NMR spectra. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2010; 204:256-265. [PMID: 20359918 DOI: 10.1016/j.jmr.2010.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Revised: 03/02/2010] [Accepted: 03/02/2010] [Indexed: 05/29/2023]
Abstract
The practical aspects of applying CPMG for acquisition of wideline powder patterns are examined. It is shown that most distortions/modulations of spikelet spectra can be traced to the incoherent signal averaging from multiple coherence transfer pathways. A strategy for minimizing these distortions/modulations is described. Also, a few interesting observations regarding the implementation of the wideline WURST-QCPMG experiment are presented, namely the accumulation of second-order signal phase and the effects of varying the sweep rate and rf field of chirp pulses.
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Affiliation(s)
- Ivan Hung
- Center of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 32310, USA
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Hamaed H, Ye E, Udachin K, Schurko RW. Solid-State 137Ba NMR Spectroscopy: An Experimental and Theoretical Investigation of 137Ba Electric Field Gradient Tensors and Their Relation to Structure and Symmetry. J Phys Chem B 2010; 114:6014-22. [DOI: 10.1021/jp102026m] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Hiyam Hamaed
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4, Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Ontario, Canada K1A 0R6
| | - Eric Ye
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4, Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Ontario, Canada K1A 0R6
| | - Konstantin Udachin
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4, Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Ontario, Canada K1A 0R6
| | - Robert W. Schurko
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4, Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5, and Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, Ontario, Canada K1A 0R6
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Qiu R, Qiu Y, Yin S, Xu X, Luo S, Au CT, Wong WY, Shimada S. Highly Efficient and Selective Synthesis of (E)-α,β-Unsaturated Ketones by Crossed Condensation of Ketones and Aldehydes Catalyzed by an Air-Stable Cationic Organobismuth Perfluorooctanesulfonate. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900679] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhu J, Huang Y. Solid-State NMR Study of Dehydration of Layered α-Niobium Phosphate. Inorg Chem 2009; 48:10186-92. [DOI: 10.1021/ic9011668] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianfeng Zhu
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Yining Huang
- Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7
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