1
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Iyer J, Brunsteiner M, Modhave D, Paudel A. Role of Crystal Disorder and Mechanoactivation in Solid-State Stability of Pharmaceuticals. J Pharm Sci 2023; 112:1539-1565. [PMID: 36842482 DOI: 10.1016/j.xphs.2023.02.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 02/28/2023]
Abstract
Common energy-intensive processes applied in oral solid dosage development, such as milling, sieving, blending, compaction, etc. generate particles with surface and bulk crystal disorder. An intriguing aspect of the generated crystal disorder is its evolution and repercussion on the physical- and chemical stabilities of drugs. In this review, we firstly examine the existing literature on crystal disorder and its implications on solid-state stability of pharmaceuticals. Secondly, we discuss the key aspects related to the generation and evolution of crystal disorder, dynamics of the disordered/amorphous phase, analytical techniques to measure/quantify them, and approaches to model the disordering propensity from first principles. The main objective of this compilation is to provide special impetus to predict or model the chemical degradation(s) resulting from processing-induced manifestation in bulk solid manufacturing. Finally, a generic workflow is proposed that can be useful to investigate the relevance of crystal disorder on the degradation of pharmaceuticals during stability studies. The present review will cater to the requirements for developing physically- and chemically stable drugs, thereby enabling early and rational decision-making during candidate screening and in assessing degradation risks associated with formulations and processing.
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Affiliation(s)
- Jayant Iyer
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria
| | | | - Dattatray Modhave
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria
| | - Amrit Paudel
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria; Graz University of Technology, Institute of Process and Particle Engineering, Graz Austria.
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2
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Hodgkinson P. NMR crystallography of molecular organics. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2020; 118-119:10-53. [PMID: 32883448 DOI: 10.1016/j.pnmrs.2020.03.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 02/25/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
Developments of NMR methodology to characterise the structures of molecular organic structures are reviewed, concentrating on the previous decade of research in which density functional theory-based calculations of NMR parameters in periodic solids have become widespread. With a focus on demonstrating the new structural insights provided, it is shown how "NMR crystallography" has been used in a spectrum of applications from resolving ambiguities in diffraction-derived structures (such as hydrogen atom positioning) to deriving complete structures in the absence of diffraction data. As well as comprehensively reviewing applications, the different aspects of the experimental and computational techniques used in NMR crystallography are surveyed. NMR crystallography is seen to be a rapidly maturing subject area that is increasingly appreciated by the wider crystallographic community.
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Affiliation(s)
- Paul Hodgkinson
- Department of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, UK.
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3
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Chernyshov IY, Vener MV, Shenderovich IG. Local-structure effects on 31P NMR chemical shift tensors in solid state. J Chem Phys 2019; 150:144706. [PMID: 30981271 DOI: 10.1063/1.5075519] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The effect of the local structure on the 31P NMR chemical shift tensor (CST) has been studied experimentally and simulated theoretically using the density functional theory gauge-independent-atomic-orbital approach. It has been shown that the dominating impact comes from a small number of noncovalent interactions between the phosphorus-containing group under question and the atoms of adjacent molecules. These interactions can be unambiguously identified using the Bader analysis of the electronic density. A robust and computationally effective approach designed to attribute a given experimental 31P CST to a certain local morphology has been elaborated. This approach can be useful in studies of surfaces, complex molecular systems, and amorphous materials.
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Affiliation(s)
- Ivan Yu Chernyshov
- Department of Quantum Chemistry, D. Mendeleev University of Chemical Technology, Moscow 125047, Russia
| | - Mikhail V Vener
- Department of Quantum Chemistry, D. Mendeleev University of Chemical Technology, Moscow 125047, Russia
| | - Ilya G Shenderovich
- Institute of Organic Chemistry, University of Regensburg, 93053 Regensburg, Germany
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4
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Rekis T. Disorder in molecular crystals justified with the help of statistical mechanics: a case of two enantiomer solid solutions. CrystEngComm 2019. [DOI: 10.1039/c9ce00347a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An elegant statistical mechanics approach has been exploited in combination with accurate quantum chemical calculations to justify the disorder in two previously reported racemic solids.
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Affiliation(s)
- Toms Rekis
- Department of Physical Chemistry
- University of Latvia
- Riga
- Latvia
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5
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Bohle A, Dudenko D, Koenen N, Sebastiani D, Allard S, Scherf U, Spiess HW, Hansen MR. A Generalized Packing Model for Bulk Crystalline Regioregular Poly(3-alkylthiophenes) with Extended Side Chains. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anne Bohle
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Dmytro Dudenko
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Nils Koenen
- Bergische Universität Wuppertal; Gauss-Straße 20 42097 Wuppertal Germany
| | - Daniel Sebastiani
- Department of Chemistry; Martin-Luther Universität Halle-Wittenberg; Von-Danckelmann-Platz 4 06120 Halle/Saale Germany
| | - Sybille Allard
- Bergische Universität Wuppertal; Gauss-Straße 20 42097 Wuppertal Germany
| | - Ullrich Scherf
- Bergische Universität Wuppertal; Gauss-Straße 20 42097 Wuppertal Germany
| | | | - Michael Ryan Hansen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
- Institute of Physical Chemistry; Westfälische Wilhelms-Universität Münster; Corrensstr. 28/30 48149 Münster Germany
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6
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Moran RF, Dawson DM, Ashbrook SE. Exploiting NMR spectroscopy for the study of disorder in solids. INT REV PHYS CHEM 2017. [DOI: 10.1080/0144235x.2017.1256604] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Robert F. Moran
- School of Chemistry, EaStCHEM and St Andrews Centre of Magnetic Resonance, University of St Andrews, North Haugh, St Andrews KY16 9ST, UK
| | - Daniel M. Dawson
- School of Chemistry, EaStCHEM and St Andrews Centre of Magnetic Resonance, University of St Andrews, North Haugh, St Andrews KY16 9ST, UK
| | - Sharon E. Ashbrook
- School of Chemistry, EaStCHEM and St Andrews Centre of Magnetic Resonance, University of St Andrews, North Haugh, St Andrews KY16 9ST, UK
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7
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Arhangelskis M, Eddleston MD, Reid DG, Day GM, Bučar DK, Morris AJ, Jones W. Rationalization of the Color Properties of Fluorescein in the Solid State: A Combined Computational and Experimental Study. Chemistry 2016; 22:10065-73. [PMID: 27303817 PMCID: PMC4982065 DOI: 10.1002/chem.201601340] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Indexed: 11/10/2022]
Abstract
Fluorescein is known to exist in three tautomeric forms defined as quinoid, zwitterionic, and lactoid. In the solid state, the quinoid and zwitterionic forms give rise to red and yellow materials, respectively. The lactoid form has not been crystallized pure, although its cocrystal and solvate forms exhibit colors ranging from yellow to green. An explanation for the observed colors of the crystals is found using a combination of UV/Vis spectroscopy and plane-wave DFT calculations. The role of cocrystal coformers in modifying crystal color is also established. Several new crystal structures are determined using a combination of X-ray and electron diffraction, solid-state NMR spectroscopy, and crystal structure prediction (CSP). The protocol presented herein may be used to predict color properties of materials prior to their synthesis.
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Affiliation(s)
- Mihails Arhangelskis
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Mark D Eddleston
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - David G Reid
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Graeme M Day
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
| | - Dejan-Krešimir Bučar
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Andrew J Morris
- Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - William Jones
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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8
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Ashbrook SE, McKay D. Combining solid-state NMR spectroscopy with first-principles calculations - a guide to NMR crystallography. Chem Commun (Camb) 2016; 52:7186-204. [PMID: 27117884 DOI: 10.1039/c6cc02542k] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Recent advances in the application of first-principles calculations of NMR parameters to periodic systems have resulted in widespread interest in their use to support experimental measurement. Such calculations often play an important role in the emerging field of "NMR crystallography", where NMR spectroscopy is combined with techniques such as diffraction, to aid structure determination. Here, we discuss the current state-of-the-art for combining experiment and calculation in NMR spectroscopy, considering the basic theory behind the computational approaches and their practical application. We consider the issues associated with geometry optimisation and how the effects of temperature may be included in the calculation. The automated prediction of structural candidates and the treatment of disordered and dynamic solids are discussed. Finally, we consider the areas where further development is needed in this field and its potential future impact.
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Affiliation(s)
- Sharon E Ashbrook
- School of Chemistry, EaStCHEM and Centre of Magnetic Resonance, University of St Andrews, St Andrews, KY16 9ST, UK.
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9
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Braun DE, Nartowski KP, Khimyak YZ, Morris KR, Byrn SR, Griesser UJ. Structural Properties, Order-Disorder Phenomena, and Phase Stability of Orotic Acid Crystal Forms. Mol Pharm 2016; 13:1012-29. [PMID: 26741914 PMCID: PMC4783786 DOI: 10.1021/acs.molpharmaceut.5b00856] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Orotic acid (OTA) is reported to
exist in the anhydrous (AH), monohydrate
(Hy1), and dimethyl sulfoxide monosolvate (SDMSO) forms.
In this study we investigate the (de)hydration/desolvation behavior,
aiming at an understanding of the elusive structural features of anhydrous
OTA by a combination of experimental and computational techniques,
namely, thermal analytical methods, gravimetric moisture (de)sorption
studies, water activity measurements, X-ray powder diffraction, spectroscopy
(vibrational, solid-state NMR), crystal energy landscape, and chemical
shift calculations. The Hy1 is a highly stable hydrate, which dissociates
above 135 °C and loses only a small part of the water when stored
over desiccants (25 °C) for more than one year. In Hy1, orotic
acid and water molecules are linked by strong hydrogen bonds in nearly
perfectly planar arranged stacked layers. The layers are spaced by
3.1 Å and not linked via hydrogen bonds. Upon dehydration the
X-ray powder diffraction and solid-state NMR peaks become broader,
indicating some disorder in the anhydrous form. The Hy1 stacking reflection
(122) is maintained, suggesting that the OTA molecules are still arranged
in stacked layers in the dehydration product. Desolvation of SDMSO, a nonlayer structure, results in the same AH phase as
observed upon dehydrating Hy1. Depending on the desolvation conditions,
different levels of order–disorder of layers present in anhydrous
OTA are observed, which is also suggested by the computed low energy
crystal structures. These structures provide models for stacking faults
as intergrowth of different layers is possible. The variability in
anhydrate crystals is of practical concern as it affects the moisture
dependent stability of AH with respect to hydration.
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Affiliation(s)
- Doris E Braun
- Institute of Pharmacy, University of Innsbruck , Innrain 52c, 6020 Innsbruck, Austria
| | - Karol P Nartowski
- School of Pharmacy, University of East Anglia , Norwich, Norfolk NR4 7TJ, United Kingdom
| | - Yaroslav Z Khimyak
- School of Pharmacy, University of East Anglia , Norwich, Norfolk NR4 7TJ, United Kingdom
| | - Kenneth R Morris
- Lachman Institute for Pharmaceutical Analysis, Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University-Brooklyn Campus , 75 DeKalb Avenue, Brooklyn, New York 11201, United States
| | - Stephen R Byrn
- Department of Industrial and Physical Pharmacy, Purdue University , 575 Stadium Mall Drive, West Lafayette, Indiana 47906, United States
| | - Ulrich J Griesser
- Institute of Pharmacy, University of Innsbruck , Innrain 52c, 6020 Innsbruck, Austria
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10
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Gowda V, Laitinen RS, Telkki VV, Larsson AC, Antzutkin ON, Lantto P. DFT calculations in the assignment of solid-state NMR and crystal structure elucidation of a lanthanum(iii) complex with dithiocarbamate and phenanthroline. Dalton Trans 2016; 45:19473-19484. [DOI: 10.1039/c6dt03705d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure of a novel rare-earth lanthanum(iii) complex resolved by a combination of DFT modelling, NMR spectroscopy, and single crystal XRD.
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Affiliation(s)
- Vasantha Gowda
- NMR Research Unit
- University of Oulu
- FI-90014 Oulu
- Finland
- Chemistry of Interfaces
| | | | | | | | | | - Perttu Lantto
- NMR Research Unit
- University of Oulu
- FI-90014 Oulu
- Finland
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11
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Kerr HE, Mason HE, Sparkes HA, Hodgkinson P. Testing the limits of NMR crystallography: the case of caffeine–citric acid hydrate. CrystEngComm 2016. [DOI: 10.1039/c6ce01453d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effects of geometry optimisation on the ability to predict linewidths due to disorder and crystal packing energies is investigated on a previously unreported caffeine citric acid cocrystal system.
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Affiliation(s)
- Hannah E. Kerr
- Department of Chemistry
- Durham University
- Durham DH1 3LE, UK
| | - Helen E. Mason
- Department of Chemistry
- Durham University
- Durham DH1 3LE, UK
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12
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Zhuang X, Gehrig D, Forler N, Liang H, Wagner M, Hansen MR, Laquai F, Zhang F, Feng X. Conjugated microporous polymers with dimensionality-controlled heterostructures for green energy devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:3789-96. [PMID: 25991493 DOI: 10.1002/adma.201501786] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 04/29/2015] [Indexed: 05/26/2023]
Abstract
Dimensionality for conjugated micro-porous polymers (CMP-nD, n = 0, 1, 2) is proven to be of great importance for tailoring their photophysical properties. Moreover, CMP-nD can further be converted into boron and nitrogen co-doped porous carbons (nDBN, n = 0, 1, 2) with maintained 0D, 1D, and 2D nano-structures and highly efficient catalytic performance.
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Affiliation(s)
- Xiaodong Zhuang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Dominik Gehrig
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Nina Forler
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Haiwei Liang
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Manfred Wagner
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Michael Ryan Hansen
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000, Aarhus C, Denmark
| | - Frédéric Laquai
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Fan Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Xinliang Feng
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany
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13
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Paluch P, Pawlak T, Oszajca M, Lasocha W, Potrzebowski MJ. Fine refinement of solid state structure of racemic form of phospho-tyrosine employing NMR Crystallography approach. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2015; 65:2-11. [PMID: 25240460 DOI: 10.1016/j.ssnmr.2014.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/29/2014] [Indexed: 05/25/2023]
Abstract
We present step by step facets important in NMR Crystallography strategy employing O-phospho-dl-tyrosine as model sample. The significance of three major techniques being components of this approach: solid state NMR (SS NMR), X-ray diffraction of powdered sample (PXRD) and theoretical calculations (Gauge Invariant Projector Augmented Wave; GIPAW) is discussed. Each experimental technique provides different set of structural constraints. From the PXRD measurement the size of the unit cell, space group and roughly refined molecular structure are established. SS NMR provides information about content of crystallographic asymmetric unit, local geometry, molecular motion in the crystal lattice and hydrogen bonding pattern. GIPAW calculations are employed for validation of quality of elucidation and fine refinement of structure. Crystal and molecular structure of O-phospho-dl-tyrosine solved by NMR Crystallography is deposited at Cambridge Crystallographic Data Center under number CCDC 1005924.
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Affiliation(s)
- Piotr Paluch
- Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, Sienkiewicza 112, PL-90-363 Lodz, Poland
| | - Tomasz Pawlak
- Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, Sienkiewicza 112, PL-90-363 Lodz, Poland
| | - Marcin Oszajca
- Jerzy Haber Institute of Catalysis and Surface Chemistry, PAS, Niezapominajek 8, 30-239 Krakow, Poland
| | - Wieslaw Lasocha
- Jerzy Haber Institute of Catalysis and Surface Chemistry, PAS, Niezapominajek 8, 30-239 Krakow, Poland; Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
| | - Marek J Potrzebowski
- Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, Sienkiewicza 112, PL-90-363 Lodz, Poland.
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14
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Asakura T, Ohata T, Kametani S, Okushita K, Yazawa K, Nishiyama Y, Nishimura K, Aoki A, Suzuki F, Kaji H, Ulrich AS, Williamson MP. Intermolecular Packing in B. mori Silk Fibroin: Multinuclear NMR Study of the Model Peptide (Ala-Gly)15 Defines a Heterogeneous Antiparallel Antipolar Mode of Assembly in the Silk II Form. Macromolecules 2014. [DOI: 10.1021/ma502191g] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tetsuo Asakura
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
- Institute for
Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Takuya Ohata
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Shunsuke Kametani
- Mitsui Chemical Analysis & Consulting Service, Inc., 580-32, Nagaura, Sodegaura, Chiba 299-0265, Japan
| | - Keiko Okushita
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Koji Yazawa
- JEOL RESONANCE
Inc., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Yusuke Nishiyama
- JEOL RESONANCE
Inc., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Katsuyuki Nishimura
- Institute for
Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Akihiro Aoki
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Furitsu Suzuki
- Institute
for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hironori Kaji
- Institute
for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Anne S. Ulrich
- Karlsruhe Institute of
Technology, IBG-2 and IOC, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Mike P. Williamson
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Firth Court,
Western Bank, Sheffield S10 2TN, U.K
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15
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Czernek J, Brus J. The covariance of the differences between experimental and theoretical chemical shifts as an aid for assigning two-dimensional heteronuclear correlation solid-state NMR spectra. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Pawlak T, Potrzebowski MJ. Fine refinement of solid-state molecular structures of Leu- and Met-enkephalins by NMR crystallography. J Phys Chem B 2014; 118:3298-309. [PMID: 24605867 DOI: 10.1021/jp500379e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This paper presents a methodology that allows the fine refinement of the crystal and molecular structure for compounds for which the data deposited in the crystallographic bases are of poor quality. Such species belong to the group of samples with molecular disorder. In the Cambridge Crystallographic Data Center (CCDC), there are approximately 22,000 deposited structures with an R-factor over 10. The powerful methodology we present employs crystal data for Leu-enkephalin (two crystallographic forms) with R-factor values of 14.0 and 8.9 and for Met-enkephalin (one form) with an R-factor of 10.5. NMR crystallography was employed in testing the X-ray data and the quality of the structure refinement. The GIPAW (gauge invariant projector augmented wave) method was used to optimize the coordinates of the enkephalins and to compute NMR parameters. As we reveal, this complementary approach makes it possible to generate a reasonable set of new coordinates that better correlate to real samples. This methodology is general and can be employed in the study of each compound possessing magnetically active nuclei.
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Affiliation(s)
- Tomasz Pawlak
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences , Sienkiewicza 112, 90-363 Lodz, Poland
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17
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Concistrè M, Carignani E, Borsacchi S, Johannessen OG, Mennucci B, Yang Y, Geppi M, Levitt MH. Freezing of Molecular Motions Probed by Cryogenic Magic Angle Spinning NMR. J Phys Chem Lett 2014; 5:512-516. [PMID: 26276602 DOI: 10.1021/jz4026276] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cryogenic magic angle spinning makes it possible to obtain the NMR spectra of solids at temperatures low enough to freeze out most molecular motions. We have applied cryogenic magic angle spinning NMR to a crystalline small-molecule solid (ibuprofen sodium salt), which displays a variety of molecular dynamics. Magic angle (13)C NMR spectra are shown for a wide range of temperatures, including in the cryogenic regime down to 20 K. The hydrophobic and hydrophilic regions of the molecular structure display different behavior in the cryogenic regime, with the hydrophilic region remaining well-structured, while the hydrophobic region exhibits a broad frozen conformational distribution.
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Affiliation(s)
- Maria Concistrè
- †School of Chemistry, University of Southampton, SO17 1BJ Southampton, United Kingdom
| | - Elisa Carignani
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Silvia Borsacchi
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Ole G Johannessen
- †School of Chemistry, University of Southampton, SO17 1BJ Southampton, United Kingdom
| | - Benedetta Mennucci
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Yifeng Yang
- §School of Engineering Science, University of Southampton, Southampton, United Kingdom
| | - Marco Geppi
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Malcolm H Levitt
- †School of Chemistry, University of Southampton, SO17 1BJ Southampton, United Kingdom
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18
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Czernek J, Brus J. Theoretical predictions of the two-dimensional solid-state NMR spectra: A case study of the 13C–1H correlations in metergoline. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.09.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bibent N, Charpentier T, Devautour-Vinot S, Mehdi A, Gaveau P, Henn F, Silly G. Solid-State NMR Spectroscopic Studies of Propylphosphonic Acid Functionalized SBA-15 Mesoporous Silica: Characterization of Hydrogen-Bonding Interactions. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201404] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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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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21
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Davies E, Duer MJ, Ashbrook SE, Griffin JM. Applications of NMR crystallography to problems in biomineralization: refinement of the crystal structure and 31P solid-state NMR spectral assignment of octacalcium phosphate. J Am Chem Soc 2012; 134:12508-15. [PMID: 22746195 DOI: 10.1021/ja3017544] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By combining X-ray crystallography, first-principles density functional theory calculations, and solid-state nuclear magnetic resonance spectroscopy, we have refined the crystal structure of octacalcium phosphate (OCP), reassigned its (31)P NMR spectrum, and identified an extended hydrogen-bonding network that we propose is critical to the structural stability of OCP. Analogous water networks may be related to the critical role of the hydration state in determining the mechanical properties of bone, as OCP has long been proposed as a precursor phase in bone mineral formation. The approach that we have taken in this paper is broadly applicable to the characterization of crystalline materials in general, but particularly to those incorporating hydrogen that cannot be fully characterized using diffraction techniques.
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Affiliation(s)
- Erika Davies
- Department of Chemistry, University of Cambridge, Cambridge, UK
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22
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Beaujuge PM, Tsao HN, Hansen MR, Amb CM, Risko C, Subbiah J, Choudhury KR, Mavrinskiy A, Pisula W, Brédas JL, So F, Müllen K, Reynolds JR. Synthetic Principles Directing Charge Transport in Low-Band-Gap Dithienosilole–Benzothiadiazole Copolymers. J Am Chem Soc 2012; 134:8944-57. [DOI: 10.1021/ja301898h] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre M. Beaujuge
- The George and Josephine Butler
Polymer Research Laboratory, Center for Macromolecular Science and
Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900,
Saudi Arabia
| | - Hoi Nok Tsao
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Michael Ryan Hansen
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Chad M. Amb
- The George and Josephine Butler
Polymer Research Laboratory, Center for Macromolecular Science and
Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Chad Risko
- Center for Organic Photonics
and Electronics and School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
| | - Jegadesan Subbiah
- Department of Materials
Science
and Engineering, University of Florida,
Gainesville, Florida 32611, United States
| | - Kaushik Roy Choudhury
- Department of Materials
Science
and Engineering, University of Florida,
Gainesville, Florida 32611, United States
| | - Alexei Mavrinskiy
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Wojciech Pisula
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Jean-Luc Brédas
- Center for Organic Photonics
and Electronics and School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
| | - Franky So
- Department of Materials
Science
and Engineering, University of Florida,
Gainesville, Florida 32611, United States
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - John R. Reynolds
- The George and Josephine Butler
Polymer Research Laboratory, Center for Macromolecular Science and
Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Center for Organic Photonics
and Electronics and School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
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23
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Luisi BS, Medek A, Liu Z, Mudunuri P, Moulton B. Milling-Induced Disorder of Pharmaceuticals: One-Phase or Two-Phase System? J Pharm Sci 2012; 101:1475-85. [DOI: 10.1002/jps.23035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 12/02/2011] [Accepted: 12/09/2011] [Indexed: 11/10/2022]
Affiliation(s)
- Brian S Luisi
- Vertex Pharmaceuticals, Cambridge, Massachusetts 02139, USA.
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24
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Küçükbenli E, Sonkar K, Sinha N, de Gironcoli S. Complete 13C NMR Chemical Shifts Assignment for Cholesterol Crystals by Combined CP-MAS Spectral Editing and ab Initio GIPAW Calculations with Dispersion Forces. J Phys Chem A 2012; 116:3765-9. [DOI: 10.1021/jp3019974] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emine Küçükbenli
- SISSA and IOM-CNR Democritos, via Bonomea 265, I-34136 Trieste, Italy
| | - Kanchan Sonkar
- Centre of Biomedical Magnetic
Resonance, SGPGIMS Campus, Raibarelly Road,
Lucknow 226014, India
| | - Neeraj Sinha
- Centre of Biomedical Magnetic
Resonance, SGPGIMS Campus, Raibarelly Road,
Lucknow 226014, India
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25
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Ośmiałowski B, Kolehmainen E, Ikonen S, Ahonen K, Löfman M. NMR crystallography of 2-acylamino-6-[1H]-pyridones: Solid-state NMR, GIPAW computational, and single crystal X-ray diffraction studies. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.10.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Clawson JS, Kennedy-Gabb S, Lee AY, Copley RCB. One-phase crystal disorder in pharmaceutical solids and its implication for solid-state stability. J Pharm Sci 2011; 100:4302-16. [PMID: 21590691 DOI: 10.1002/jps.22621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 03/08/2011] [Accepted: 04/21/2011] [Indexed: 01/13/2023]
Abstract
Solid-state disorders of active pharmaceutical ingredients have been characterized by means of X-ray diffraction techniques and solid-state nuclear magnetic resonance spectroscopy. The results determined that the pleuromutilin-derivative, I, displays a unique continuous conformational disorder while retaining its long-range crystalline structure. The propionic acid (PA) version of this compound displayed partial crystalline order and site disorder of PA, depending on the quantity of PA incorporated in the structure. Thus, I is a unique example of one-phase crystalline-amorphous model. Physical and chemical stability data was acquired on these disordered systems and discussed in relation with the characterized disorder present in the crystal systems. Analysis of the results showed that in contrast to phase-separated amorphous, restrained disorders do not influence the stability.
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Affiliation(s)
- Jacalyn S Clawson
- Product Development, GlaxoSmithKline plc., King of Prussia, Pennsylvania 19406.
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27
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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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28
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Bertini I, Emsley L, Felli IC, Laage S, Lesage A, Lewandowski JR, Marchetti A, Pierattelli R, Pintacuda G. High-resolution and sensitivity through-bond correlations in ultra-fast magic angle spinning (MAS) solid-state NMR. Chem Sci 2011. [DOI: 10.1039/c0sc00397b] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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Sadoc A, Body M, Legein C, Biswal M, Fayon F, Rocquefelte X, Boucher F. NMR parameters in alkali, alkaline earth and rare earth fluorides from first principle calculations. Phys Chem Chem Phys 2011; 13:18539-50. [DOI: 10.1039/c1cp21253b] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Bonhomme C, Gervais C, Coelho C, Pourpoint F, Azaïs T, Bonhomme-Coury L, Babonneau F, Jacob G, Ferrari M, Canet D, Yates JR, Pickard CJ, Joyce SA, Mauri F, Massiot D. New perspectives in the PAW/GIPAW approach: J(P-O-Si) coupling constants, antisymmetric parts of shift tensors and NQR predictions. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48 Suppl 1:S86-S102. [PMID: 20589728 DOI: 10.1002/mrc.2635] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In 2001, Pickard and Mauri implemented the gauge including projected augmented wave (GIPAW) protocol for first-principles calculations of NMR parameters using periodic boundary conditions (chemical shift anisotropy and electric field gradient tensors). In this paper, three potentially interesting perspectives in connection with PAW/GIPAW in solid-state NMR and pure nuclear quadrupole resonance (NQR) are presented: (i) the calculation of J coupling tensors in inorganic solids; (ii) the calculation of the antisymmetric part of chemical shift tensors and (iii) the prediction of (14)N and (35)Cl pure NQR resonances including dynamics. We believe that these topics should open new insights in the combination of GIPAW, NMR/NQR crystallography, temperature effects and dynamics. Points (i), (ii) and (iii) will be illustrated by selected examples: (i) chemical shift tensors and heteronuclear (2)J(P-O-Si) coupling constants in the case of silicophosphates and calcium phosphates [Si(5)O(PO(4))(6), SiP(2)O(7) polymorphs and α-Ca(PO(3))(2)]; (ii) antisymmetric chemical shift tensors in cyclopropene derivatives, C(3)X(4) (X = H, Cl, F) and (iii) (14)N and (35)Cl NQR predictions in the case of RDX (C(3)H(6)N(6)O(6)), β-HMX (C(4)H(8)N(8)O(8)), α-NTO (C(2)H(2)N(4)O(3)) and AlOPCl(6). RDX, β-HMX and α-NTO are explosive compounds.
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Affiliation(s)
- Christian Bonhomme
- Laboratoire de Chimie de la Matière Condensée, Université Pierre et Marie Curie, Paris 06, CNRS UMR 7574, Collège de France, 75005 Paris, France.
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31
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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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32
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Salager E, Day GM, Stein RS, Pickard CJ, Elena B, Emsley L. Powder crystallography by combined crystal structure prediction and high-resolution 1H solid-state NMR spectroscopy. J Am Chem Soc 2010; 132:2564-6. [PMID: 20136091 DOI: 10.1021/ja909449k] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A fast method for crystal structure determination using crystal structure prediction and solid-state (1)H NMR is presented. This technique does not need any prior knowledge except the chemical formula; resonance assignment is not necessary. Starting from an ensemble of predicted crystal structures for powdered thymol, comparison between experimental and calculated (1)H solid-state isotropic NMR chemical shifts is sufficient to determine which predicted structure corresponds to the powder under study. The same approach using proton-proton spin-diffusion data is successful and can be used for cross-validation.
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Affiliation(s)
- Elodie Salager
- Université de Lyon, Centre de RMN à très hauts champs, CNRS/ENS Lyon/UCBL, 5 rue de la Doua, 69100 Villeurbanne, France
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33
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Gortari ID, Portella G, Salvatella X, Bajaj VS, van der Wel PCA, Yates JR, Segall MD, Pickard CJ, Payne MC, Vendruscolo M. Time Averaging of NMR Chemical Shifts in the MLF Peptide in the Solid State. J Am Chem Soc 2010; 132:5993-6000. [DOI: 10.1021/ja9062629] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Itzam De Gortari
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Guillem Portella
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Xavier Salvatella
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Vikram S. Bajaj
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Patrick C. A. van der Wel
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Jonathan R. Yates
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Matthew D. Segall
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Chris J. Pickard
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Mike C. Payne
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
| | - Michele Vendruscolo
- TCM Group, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom, Computational Biomolecular Dynamics Group, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom, and Department of Chemistry, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Boston Massachusetts 02139
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34
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Crystal structure landscapes from combined vibrational spectroscopy and ab initio calculations: 4-(Dimethylamino)benzaldehyde. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2009.12.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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35
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Amini SK, Shaghaghi H, Bain AD, Chabok A, Tafazzoli M. Magnetic resonance tensors in uracil: calculation of 13C, 15N, 17O NMR chemical shifts, 17O and 14N electric field gradients and measurement of 13C and 15N chemical shifts. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2010; 37:13-20. [PMID: 20071154 DOI: 10.1016/j.ssnmr.2009.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Revised: 11/17/2009] [Accepted: 12/08/2009] [Indexed: 05/28/2023]
Abstract
The experimental (13)C NMR chemical shift components of uracil in the solid state are reported for the first time (to our knowledge), as well as newer data for the (15)N nuclei. These experimental values are supported by extensive calculated data of the (13)C, (15)N and (17)O chemical shielding and (17)O and (14)N electric field gradient (EFG) tensors. In the crystal, uracil forms a number of strong and weak hydrogen bonds, and the effect of these on the (13)C and (15)N chemical shift tensors is studied. This powerful combination of the structural methods and theoretical calculations gives a very detailed view of the strong and weak hydrogen bond formation by this molecule. Good calculated results for the optimized cluster in most cases (except for the EFG values of the (14)N3 and (17)O4 nuclei) certify the accuracy of our optimized coordinates for the hydrogen nuclei. Our reported RMSD values for the calculated chemical shielding and EFG tensors are smaller than those reported previously. In the optimized cluster the 6-311+G** basis set is the optimal one in the chemical shielding and EFG calculations, except for the EFG calculations of the oxygen nuclei, in which the 6-31+G** basis set is the optimal one. The optimal method for the chemical shielding and EFG calculations of the oxygen and nitrogen nuclei is the PW91PW91 method, while for the chemical shielding calculations of the (13)C nuclei the B3LYP method gives the best results.
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Affiliation(s)
- Saeed K Amini
- Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran
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36
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Massiot D, Fayon F, Deschamps M, Cadars S, Florian P, Montouillout V, Pellerin N, Hiet J, Rakhmatullin A, Bessada C. Detection and use of small J couplings in solid state NMR experiments. CR CHIM 2010. [DOI: 10.1016/j.crci.2009.05.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Guerry P, Smith ME, Brown SP. 31P MAS Refocused INADEQUATE Spin−Echo (REINE) NMR Spectroscopy: Revealing J Coupling and Chemical Shift Two-Dimensional Correlations in Disordered Solids. J Am Chem Soc 2009; 131:11861-74. [DOI: 10.1021/ja902238s] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul Guerry
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
| | - Mark E. Smith
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
| | - Steven P. Brown
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
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38
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Cadars S, Brouwer DH, Chmelka BF. Probing local structures of siliceous zeolite frameworks by solid-state NMR and first-principles calculations of 29Si–O–29Si scalar couplings. Phys Chem Chem Phys 2009; 11:1825-37. [DOI: 10.1039/b815361b] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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39
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Lesage A. Recent advances in solid-state NMR spectroscopy of spin I = 1/2 nuclei. Phys Chem Chem Phys 2009; 11:6876-91. [DOI: 10.1039/b907733m] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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