A new rotor design for magic-angle spinning (MAS) NMR experiments allows spectroscopists to carry out studies under more industrially relevant conditions than before, according to work from Pacific Northwest National Laboratory in Richland, Washington, USA.
[NMR paper] Observation of scalar nuclear spin-spin coupling in van der Waals complexes.
From Mendeley Biomolecular NMR group:
Observation of scalar nuclear spin-spin coupling in van der Waals complexes.
Proceedings of the National Academy of Sciences of the United States of America (2012). Volume: 109, Issue: 31. Pages: 12393-7. Micah P Ledbetter, Giacomo Saielli, Alessandro Bagno, Nhan Tran, Michael V Romalis et al.
Scalar couplings between covalently bound nuclear spins are a ubiquitous feature in nuclear magnetic resonance (NMR) experiments, imparting valuable information to NMR spectra regarding molecular structure and conformation. Such couplings arise due to a...
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09-09-2014 03:44 PM
[NMR paper] Efficient heteronuclear decoupling in MAS solid-state NMR using non-rotor-synchronized rCW irradiation.
Efficient heteronuclear decoupling in MAS solid-state NMR using non-rotor-synchronized rCW irradiation.
Related Articles Efficient heteronuclear decoupling in MAS solid-state NMR using non-rotor-synchronized rCW irradiation.
J Magn Reson. 2014 Jul 19;246C:104-109
Authors: Equbal A, Paul S, Mithu VS, Madhu PK, Nielsen NC
Abstract
We present new non-rotor-synchronized variants of the recently introduced refocused continuous wave (rCW) heteronuclear decoupling method significantly improving the performance relative to the original...
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08-16-2014 10:26 PM
Long-lived nuclear spin states in methyl groups and quantum-rotor-induced polarization
From The DNP-NMR Blog:
Long-lived nuclear spin states in methyl groups and quantum-rotor-induced polarization
Meier, B., et al., Long-lived nuclear spin states in methyl groups and quantum-rotor-induced polarization. J Am Chem Soc, 2013. 135(50): p. 18746-9.
http://www.ncbi.nlm.nih.gov/pubmed/24252212
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02-13-2014 01:42 AM
[NMR paper] Electron Spin Density on the Axial His Ligand of High-Spin and Low-Spin Nitrophorin 2 Probed by Heteronuclear NMR Spectroscopy.
Electron Spin Density on the Axial His Ligand of High-Spin and Low-Spin Nitrophorin 2 Probed by Heteronuclear NMR Spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles Electron Spin Density on the Axial His Ligand of High-Spin and Low-Spin Nitrophorin 2 Probed by Heteronuclear NMR Spectroscopy.
Inorg Chem. 2013 Jan 17;
Authors: Abriata LA, Zaballa ME, Berry RE, Yang F, Zhang H, Walker FA, Vila AJ
Abstract
The electronic structure of heme proteins is exquisitely tuned...
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02-03-2013 10:19 AM
[NMR paper] Observation of scalar nuclear spin-spin coupling in van der Waals complexes.
From Mendeley Biomolecular NMR group:
Observation of scalar nuclear spin-spin coupling in van der Waals complexes.
Proceedings of the National Academy of Sciences of the United States of America (2012). Volume: 109, Issue: 31. Pages: 12393-7. Micah P Ledbetter, Giacomo Saielli, Alessandro Bagno, Nhan Tran, Michael V Romalis et al.
Scalar couplings between covalently bound nuclear spins are a ubiquitous feature in nuclear magnetic resonance (NMR) experiments, imparting valuable information to NMR spectra regarding molecular structure and conformation. Such couplings arise due to a...
[U. of Ottawa NMR Facility Blog] MAS Rotor Crashes
MAS Rotor Crashes
There is no sound more pleasing to a solids NMR spectroscopist than that of an MAS rotor spinning stably. What happens though when the spinning is abruptly interrupted? This is called a rotor "crash" and when it occurs not only is the pleasing sound replaced by the horrible sound of rushing air, but one often finds damage to both the MAS rotor and the NMR probe. The picture below shows what used to be the solenoid coil of a 4 mm MAS probe after an unfortunate rotor crash. The rotor and sample were reduced to dust. Fortunately in this case the stator was not destroyed.
...
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03-02-2011 02:01 AM
[NMR paper] 19F-NMR spin-spin relaxation (T2) method for characterizing volatile anesthetic bindi
19F-NMR spin-spin relaxation (T2) method for characterizing volatile anesthetic binding to proteins. Analysis of isoflurane binding to serum albumin.
Related Articles 19F-NMR spin-spin relaxation (T2) method for characterizing volatile anesthetic binding to proteins. Analysis of isoflurane binding to serum albumin.
Biochemistry. 1992 Aug 11;31(31):7069-76
Authors: Dubois BW, Evers AS
This paper characterizes the low-affinity ligand binding interactions of a fluorinated volatile anesthetic, isoflurane (CHF2OCHClCF3), with bovine serum albumin...
A new spin on NMR: Rotor redesigned
A new rotor design for magic-angle spinning (MAS) NMR experiments allows spectroscopists to carry out studies under more industrially relevant conditions than before, according to work from Pacific Northwest National Laboratory in Richland, Washington, USA.
Linear Mode
