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Journal articles on the topic 'Variable temperature NMR'

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Published: 4 June 2021
Last updated: 7 February 2022

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1

Blanz, Martin. "5530353 Variable temperature NMR probe." Magnetic Resonance Imaging 15, no. 3 (January 1997): XVI. http://dx.doi.org/10.1016/s0730-725x(97)82876-7.

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2

Haw, James F. "Variable-Temperature Solid-State NMR Spectroscopy." Analytical Chemistry 60, no. 9 (May 1988): 559A—570A. http://dx.doi.org/10.1021/ac00160a721.

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3

Bussian, D. A., and G. S. Harbison. "Variable temperature 207Pb NMR of PbTiO3." Solid State Communications 115, no. 2 (June 2000): 95–98. http://dx.doi.org/10.1016/s0038-1098(00)00128-9.

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4

Taylor, R. E., and C. Dybowski. "Variable temperature NMR characterization of α-glycine." Journal of Molecular Structure 889, no. 1-3 (October 2008): 376–82. http://dx.doi.org/10.1016/j.molstruc.2008.02.023.

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5

Gallagher, Margaret M., A. Denise Rooney, and John J. Rooney. "Variable temperature 1H NMR studies on Grubbs catalysts." Journal of Organometallic Chemistry 693, no. 7 (April 2008): 1252–60. http://dx.doi.org/10.1016/j.jorganchem.2008.01.020.

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6

Huggins, Michael T., Tanay Kesharwani, Jonathan Buttrick, and Christopher Nicholson. "Variable Temperature NMR Experiment Studying Restricted Bond Rotation." Journal of Chemical Education 97, no. 5 (April 27, 2020): 1425–29. http://dx.doi.org/10.1021/acs.jchemed.0c00057.

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7

Gale, Douglas J., David J. Craik, and Robert T. C. Brownlee. "Variable-temperature NMR studies of thyroid hormone conformations." Magnetic Resonance in Chemistry 26, no. 4 (April 1988): 275–80. http://dx.doi.org/10.1002/mrc.1260260402.

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8

Frank, Julia H., Yomica L. Powder-George, Russel S. Ramsewak, and William F. Reynolds. "Variable-Temperature 1H-NMR Studies on Two C-Glycosylflavones." Molecules 17, no. 7 (July 2, 2012): 7914–26. http://dx.doi.org/10.3390/molecules17077914.

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9

Lewis, K. C., A. R. Maxwell, S. McLean, W. F. Reynolds, and R. G. Enriquez. "Room-temperature (1H,13C) and variable-temperature (1H) NMR studies on spinosin." Magnetic Resonance in Chemistry 38, no. 9 (2000): 771–74. http://dx.doi.org/10.1002/1097-458x(200009)38:9<771::aid-mrc729>3.0.co;2-4.

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10

Hugi-Cleary, Deirdre, Lothar Helm, and Andr� E. Merbach. "Variable-Temperature and Variable-Pressure17O-NMR Study of Water Exchange of Hexaaquaaluminium(III)." Helvetica Chimica Acta 68, no. 3 (May 15, 1985): 545–54. http://dx.doi.org/10.1002/hlca.19850680302.

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11

Barrie, Patrick J., Graham F. McCann, Ian Gameson, Trevor Rayment, and Jacek Klinowski. "Variable-temperature xenon-129 NMR studies of a pillared montmorillonite." Journal of Physical Chemistry 95, no. 23 (November 1991): 9416–19. http://dx.doi.org/10.1021/j100176a070.

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12

Borisov, Evgueni V., Evgueni V. Skorodumov, Valentina M. Pachevskaya, and Poul Erik Hansen. "Variable-temperature NMR study of the enol forms of benzoylacetones." Magnetic Resonance in Chemistry 43, no. 12 (2005): 992–98. http://dx.doi.org/10.1002/mrc.1673.

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13

Tuel, A., and Y. Ben Taarit. "Variable temperature 29Si MAS NMR studies of titanosilicalite TS-1." Journal of the Chemical Society, Chemical Communications, no. 21 (1992): 1578. http://dx.doi.org/10.1039/c39920001578.

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14

Isbester, Paul K., Thomas A. Kestner, and Eric J. Munson. "High-Resolution Variable-Temperature MAS19F NMR Spectroscopy of Fluorocarbon Polymers." Macromolecules 30, no. 9 (May 1997): 2800–2801. http://dx.doi.org/10.1021/ma961553q.

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15

Aguilar-Parrilla, Francisco, Bernd Wehrle, Hermann Bräunling, and Hans-Heinrich Limbach. "Temperature gradients and sample heating in variable temperature high speed MAS NMR spectroscopy." Journal of Magnetic Resonance (1969) 87, no. 3 (May 1990): 592–97. http://dx.doi.org/10.1016/0022-2364(90)90315-z.

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16

Abell, Timothy N., Robert M. McCarrick, Stacey Lowery Bretz, and David L. Tierney. "Trispyrazolylborate Complexes: An Advanced Synthesis Experiment Using Paramagnetic NMR, Variable-Temperature NMR, and EPR Spectroscopies." Journal of Chemical Education 94, no. 12 (September 26, 2017): 1960–64. http://dx.doi.org/10.1021/acs.jchemed.7b00302.

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17

Vanmoorsel, G. J. M. P., E. R. H. Vaneck, and C. P. Grey. "Pr2Sn2O7 and Sm2Sn2O7 as High-Temperature Shift Thermometers in Variable-Temperature 119Sn MAS NMR." Journal of Magnetic Resonance, Series A 113, no. 2 (April 1995): 159–63. http://dx.doi.org/10.1006/jmra.1995.1075.

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18

Izod, Keith, Peter Evans, and Paul G. Waddell. "Desolvation and aggregation of sterically demanding alkali metal diarylphosphides." Dalton Trans. 46, no. 40 (2017): 13824–34. http://dx.doi.org/10.1039/c7dt02238g.

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19

Hanson, Brian E., Edward C. Lisic, John T. Petty, and Gennaro A. Iannaconne. "Variable-temperature magic-angle-spinning carbon-13 NMR of solid dodecacarbonyltriiron." Inorganic Chemistry 25, no. 22 (October 1986): 4062–64. http://dx.doi.org/10.1021/ic00242a050.

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20

Chen, Q., H. Hurosu, I. Ando, and X. Wu. "Solid-state variable-temperature 1H MAS NMR studies on deuterated polyethylene." Solid State Nuclear Magnetic Resonance 7, no. 4 (February 1997): 319–25. http://dx.doi.org/10.1016/s0926-2040(96)01254-4.

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21

Ortega, Alfredo, Emma Maldonado, Eduardo Dı́az, and William F. Reynolds. "Variable temperature NMR studies on the conformations of tonalensin in solution." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 54, no. 5 (May 1998): 659–70. http://dx.doi.org/10.1016/s1386-1425(97)00249-7.

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22

Saito, K., I. Komaki, K. I. Hasegawa, and H. Tsuno. "In-situ variable-temperature single-point NMR imaging study of coals." Fuel 79, no. 3-4 (February 2000): 405–16. http://dx.doi.org/10.1016/s0016-2361(99)00176-3.

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23

Gallaher, Thomas N., David A. Gaul, and Serge Schreiner. "The Esterification of Trifluoroacetic Acid: A Variable Temperature NMR Kinetics Study." Journal of Chemical Education 73, no. 5 (May 1996): 465. http://dx.doi.org/10.1021/ed073p465.

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24

Chesters, Michael A., Kenneth J. Packer, Helen E. Viner, M. Alexander P. Wright, and David Lennon. "Variable-temperature, 1H NMR study of hydrogen chemisorption on EuroPt-1." Journal of the Chemical Society, Faraday Transactions 92, no. 23 (1996): 4709. http://dx.doi.org/10.1039/ft9969204709.

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25

Apperley, David C., Angus H. Forster, Romain Fournier, Robin K. Harris, Paul Hodgkinson, Robert W. Lancaster, and Thomas Rades. "Characterisation of indomethacin and nifedipine using variable-temperature solid-state NMR." Magnetic Resonance in Chemistry 43, no. 11 (2005): 881–92. http://dx.doi.org/10.1002/mrc.1643.

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26

Barrie, Patrick J., Christopher J. Groombridge, Martin C. Grossel, and Simon C. Weston. "Variable temperature MAS NMR studies of the phase transition in NaTCNQ." Journal of the Chemical Society, Chemical Communications, no. 17 (1992): 1216. http://dx.doi.org/10.1039/c39920001216.

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27

van Braam Houckgeest, Jaap P., Bettina Kraushaar-Czarnetzki, Ronald J. Dogterom, and Alex de Groot. "Variable-temperature solid state 31P NMR spectroscopic study of VPI-5." Journal of the Chemical Society, Chemical Communications, no. 9 (1991): 666. http://dx.doi.org/10.1039/c39910000666.

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28

Bergbreiter, David E., and Yun-Chin Yang. "Variable-Temperature NMR Studies of Soluble Polymer-Supported Phosphine−Silver Complexes." Journal of Organic Chemistry 75, no. 3 (February 5, 2010): 873–78. http://dx.doi.org/10.1021/jo902427w.

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29

Darton, Richard J., Philip Wormald, and Russell E. Morris. "Variable temperature high resolution 29Si MAS NMR of siliceous zeolite ferrierite." Journal of Materials Chemistry 14, no. 13 (2004): 2036. http://dx.doi.org/10.1039/b404885g.

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30

Ripmeester, John A. "Variable temperature CP/MAS13C NMR study of cyclodextrin complexes of benzaldehyde." Journal of Inclusion Phenomena 6, no. 1 (February 1988): 31–40. http://dx.doi.org/10.1007/bf00659366.

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31

Vosegaard, Thomas, Preben Daugaard, Eigil Hald, and Hans J. Jakobsen. "Small Crystals and Small Coils in Variable-Temperature Single-Crystal NMR." Journal of Magnetic Resonance 142, no. 2 (February 2000): 379–81. http://dx.doi.org/10.1006/jmre.1999.1970.

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32

Yakovlev, Ilya V., Stanislav S. Yakushkin, Mariya A. Kazakova, Sergey N. Trukhan, Zoya N. Volkova, Alexander P. Gerashchenko, Andrey S. Andreev, et al. "Superparamagnetic behaviour of metallic Co nanoparticles according to variable temperature magnetic resonance." Physical Chemistry Chemical Physics 23, no. 4 (2021): 2723–30. http://dx.doi.org/10.1039/d0cp05963c.

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33

Cholli, A. L., and M. L. Lau. "Application of NMR Spectroscopy to the Study of Piperidine Derivatives. Part III: Molecular Dynamics Study of N-Benzyl-4-[N-Benzyloxyacetyl)-(2-Fluorophenyl)]Amino-3-Methyl Piperidine." Applied Spectroscopy 47, no. 3 (March 1993): 357–59. http://dx.doi.org/10.1366/0003702934066596.

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High-resolution 1H NMR has been used to study the molecular dynamics of the piperidine derivative. Detailed analysis of variable temperature NMR data allowed the identification of the origin of two sets of methyl resonance peaks with unequal intensities in the room-temperature proton NMR spectrum of the compound.
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34

Bakhmutov, Vladimir I., and Abraham Clearfield. "31P,1H NMR Relaxation and Molecular Mobility in Layered α-Zirconium Phosphate: Variable-Temperature NMR Experiments." Journal of Physical Chemistry C 121, no. 1 (December 21, 2016): 550–55. http://dx.doi.org/10.1021/acs.jpcc.6b11247.

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35

Park, Tae-Joon, Sung-Sub Choi, Ji-Sun Kim, and Yong-Ae Kim. "Variable Temperature High-Resolution19F MAS Solid-State NMR Characterization of Fluorocarbon Rubbers." Bulletin of the Korean Chemical Society 32, no. 7 (July 20, 2011): 2345–50. http://dx.doi.org/10.5012/bkcs.2011.32.7.2345.

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36

Frydman, Benjamin, Claudio O. Fernandez, and Emanuel Vogel. "Variable-Temperature Solid-State13C- and15N-CPMAS NMR Analyses of Alkyl-Substituted Porphycenes." Journal of Organic Chemistry 63, no. 25 (December 1998): 9385–91. http://dx.doi.org/10.1021/jo9813437.

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37

Faraldos, Juan A., Shuiqin Wu, Joe Chappell, and Robert M. Coates. "Conformational analysis of (+)-germacrene A by variable-temperature NMR and NOE spectroscopy." Tetrahedron 63, no. 32 (August 2007): 7733–42. http://dx.doi.org/10.1016/j.tet.2007.04.037.

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38

Sitkowski, Jerzy, Lech Stefaniak, Maria Rospenk, Lucjan Sobczyk, and Graham A. Webb. "Multinuclear, variable-temperature NMR study of hydrogen bonding in twoortho-Mannich bases." Journal of Physical Organic Chemistry 8, no. 7 (July 1995): 463–67. http://dx.doi.org/10.1002/poc.610080704.

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39

Hall, C. Dennis, and Nelson W. Sharpe. "Variable-temperature NMR investigation into the fluxional thermodynamics of metallocene-containing cryptands." Organometallics 9, no. 4 (April 1990): 952–59. http://dx.doi.org/10.1021/om00118a009.

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40

Maistriau, L., Z. Gabelica, and E. G. Derouane. "Dehydration of (DPA) VPI-5: in situ variable temperature multinuclear NMR investigations." Applied Catalysis A: General 81, no. 1 (January 1992): 67–80. http://dx.doi.org/10.1016/0926-860x(92)80261-a.

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41

Refvik, Mitchell D., and Adrian L. Schwan. "Article." Canadian Journal of Chemistry 76, no. 2 (February 1, 1998): 213–20. http://dx.doi.org/10.1139/v97-228.

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Lithium (E)-1-hexenesulfenate (5a) was treated with a number of TMS-X (TMS = trimethylsilyl) reagents to afford N,N-bis(trimethylsilyl)-(E)-1-hexenesulfenamide (7a) and (or) di((E)-1 hexenyl) disulfide (8), usually in low yield. The cleanest reactions, those from use of TMS-Cl (to afford 7a) and TMS-CN (which yields 8) were analyzed by variable temperature NMR. It was found that the low-temperature silylation reaction using TMS-Cl affords 7a and thiosulfinate 12 as initial products. Warming the mixture coerces the decomposition of 12. Treatment of 5a with TMS-CN also yields thiosulfinate 12 which is reduced to disulfide 8 as the temperature warms, possibly by action of cyanide ion. Evidence is presented that allows a confident structural assignment of the transient thiosulfinate 12, and mechanisms are suggested for the formation of 12. The study also led to the NMR observation of (E)-1-hexenesulfenate (5a).Key words: sulfenate, thiosulfinate, variable temperature NMR (VT NMR), silylation.
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42

Jha, Amitabh, Nawal K. Paul, Smriti Trikha, and T. Stanley Cameron. "Novel synthesis of 2-naphthol Mannich bases and their NMR behaviour." Canadian Journal of Chemistry 84, no. 6 (June 1, 2006): 843–53. http://dx.doi.org/10.1139/v06-081.

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A novel two-step procedure involving the formation of 1-arylidene-2-tetralones from 2-tetralone and subsequent Michael addition of a cyclic secondary amine on the alkenone followed by in situ aerial oxidation was developed to produce 2-naphthol Mannich bases. A simple microwave-assisted one-pot synthesis of 2-naphthol Mannich bases was also carried out under solvent-free conditions from 2-naphthol and corresponding aldehydes and amines in the presence of p-toluenesulfonic acid. The compounds of this series displayed interesting NMR behaviour. Extensive variable-temperature NMR investigations, including HSQC experiments, are herein reported. NMR results on the conformation in solution phase were found to be consistent with the X-ray crystal structure in the solid state.Key words: Mannich bases, microwave-assisted Mannich reaction, temperature-variable NMR spectroscopy, NMR dynamics, X-ray crystallography.
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43

Bhardwaj, Namrta, John Andraos, and Clifford C. Leznoff. "The syntheses and NMR studies of hexadeca- and octaneopentoxyphthalocyanines." Canadian Journal of Chemistry 80, no. 2 (February 1, 2002): 141–47. http://dx.doi.org/10.1139/v02-002.

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The syntheses of 3,6-dineopentoxyphthalonitrile and 3,4,5,6-tetraneopentoxyphthalonitrile are described. Condensation of these phthalonitriles with nickel chloride in N,N-dimethylaminoethanol yielded 1,4,8,11,15,18,22,25-octaneopentoxyphthalocyaninato nickel(II) (3) and 1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexadecaneopentoxyphthalocyaninato nickel(II) (7). The 1H NMR spectra of these phthalocyanines and the related 2,3,9,10,16,17,23,24-octaneopentoxyphthalocyaninato nickel(II) (8) at temperatures from 205 to 330 K in toluene-d8 exhibited various degrees of restriction of rotation of the neopentoxy groups. Compound 7 exhibited a single atropisomer at 235 K.Key words: neopentoxy substituted phthalocyanines, variable temperature NMR, restricted rotation.
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44

Martin, Rachel W., and Kurt W. Zilm. "Variable temperature system using vortex tube cooling and fiber optic temperature measurement for low temperature magic angle spinning NMR." Journal of Magnetic Resonance 168, no. 2 (June 2004): 202–9. http://dx.doi.org/10.1016/j.jmr.2004.03.002.

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45

Webber, J. Beau W. "Some Applications of a Field Programmable Gate Array Based Time-Domain Spectrometer for NMR Relaxation and NMR Cryoporometry." Applied Sciences 10, no. 8 (April 15, 2020): 2714. http://dx.doi.org/10.3390/app10082714.

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NMR Relaxation (NMRR) is an extremely useful quantitative technique for material science, particularly for studying polymers and porous materials. NMR Cryoporometry (NMRC) is a powerful technique for the measurement of pore-size distributions and total porosities. This paper discusses the use, capabilities and application of a newly available compact NMR time-domain relaxation spectrometer, the Lab-Tools Mk3 NMR Relaxometer & Cryoporometer [Lab-Tools (nano-science), Ramsgate, Kent, UK (2019)]. Being Field Programmable Gate Array based means that it is unusually compact, which makes it particularly suitable for the lab bench-top, in the field and also mobile use. Its use with a variable-temperature NMR probe such as the Lab-Tools Peltier thermo-electrically cooled variable-temperature (V-T) probe is also discussed. This enables the NMRC measurement of pore-size distributions in porous materials, from sub-nano- to over 1 micron sized pores. These techniques are suitable for a wide range of porous materials and also polymers. This instrument comes with a Graphical User Interface (GUI) for control, which also enables both online and offline analysis of the measured data. This makes it is easy to use for material science studies both in the field and in university, research institute, company and even school laboratories. The Peltier cooling gives the precision temperature control and smoothness needed by NMR Cryoporometry, particularly near the probe liquid bulk melting point. Results from example NMR Relaxation and NMR Cryoporometric measurements are given.
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46

Baranowski, Daniel, Grzegorz Framski, Eliza Wyszko, and Tomasz Ostrowski. "Studies on structure of kinetin riboside and its analogues by variable-temperature NMR." Journal of Molecular Structure 1195 (November 2019): 110–18. http://dx.doi.org/10.1016/j.molstruc.2019.05.112.

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47

Jiang, Haipeng, Xian Wang, and Xiaoliang Cui. "Two distinct conformers of SAG investigated by solution NMR and variable-temperature experiments." Journal of Pharmaceutical and Biomedical Analysis 166 (March 2019): 83–89. http://dx.doi.org/10.1016/j.jpba.2018.12.019.

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48

Jaegers, Nicholas R., Karl T. Mueller, Yong Wang, and Jian Zhi Hu. "Variable Temperature and Pressure Operando MAS NMR for Catalysis Science and Related Materials." Accounts of Chemical Research 53, no. 3 (January 13, 2020): 611–19. http://dx.doi.org/10.1021/acs.accounts.9b00557.

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49

Busi, Baptiste, Jayasubba Reddy Yarava, Albert Hofstetter, Nicola Salvi, Diane Cala-De Paepe, Józef R. Lewandowski, Martin Blackledge, and Lyndon Emsley. "Probing Protein Dynamics Using Multifield Variable Temperature NMR Relaxation and Molecular Dynamics Simulation." Journal of Physical Chemistry B 122, no. 42 (October 2, 2018): 9697–702. http://dx.doi.org/10.1021/acs.jpcb.8b08578.

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50

Brückner, Christian, Raymond P. Briñas, and Jeanette A. Krause Bauer. "X-ray Structure and Variable Temperature NMR Spectra of [meso-Triarylcorrolato]copper(III)." Inorganic Chemistry 42, no. 15 (July 2003): 4495–97. http://dx.doi.org/10.1021/ic034080u.

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