Zobrazeno 1 - 10
of 517
pro vyhledávání: '"ROBIN K. HARRIS"'
The power of nuclear magnetic resonance, NMR, for characterizing molecules dissolved in solution is widely acknowledged and NMR forms an essential component of undergraduate chemistry degrees. However, the application of NMR to the solid state is muc
Autor:
Robin K. Harris, Stephen Byard, Andrew J. Ilott, Vadim Zorin, Anuji Abraham, David C. Apperley, Paul Hodgkinson, Andrew J. Robbins
Publikováno v:
CrystEngComm, 2016, Vol.18(6), pp.1054-1063 [Peer Reviewed Journal]
A combination of solid-state NMR techniques, including 13C/1H correlation, 2H magic-angle spinning NMR and first principles calculation are employed to characterise the role of water in different hydration states of sildenafil citrate. The 13C spectr
Autor:
Ram K. R. Jetti, Volker Kahlenberg, David C. Apperley, Thomas Gelbrich, Robin K. Harris, Neslihan Zencirci, Ulrich J. Griesser
Publikováno v:
The Journal of Physical Chemistry B. 118:3267-3280
The solvent formation of phenobarbital, an important drug compound with an unusually complex polymorphic behavior, was studied in detail. Monosolvates with acetonitrile, nitromethane, dichloromethane, and 1,4-dioxane were produced and characterized b
NMR in Pharmaceutical Sciences is intended to be a comprehensive source of information for the many individuals that utilize MR in studies of relevance to the pharmaceutical sector. The book is intended to educate and inform those who develop and ap
Publikováno v:
Magnetic Resonance in Chemistry. 50:680-690
The solid-state structures of two polymorphs and two alcoholates (ethanol and isopropanol) of formoterol fumarate have been investigated by a combination of NMR techniques. First-principles shielding computations are combined with NMR data to success
Autor:
Stewart J. Clark, Paul Hodgkinson, Andrei S. Batsanov, Robin K. Harris, Dominik B. Jochym, David C. Apperley
Publikováno v:
Journal of Molecular Structure. 1015:192-201
The validity of the structure of diterbutaline sulphate diacetic acid solvate in the Cambridge Crystallographic Database (code ZIYXAG) was checked using 13C solid-state NMR together with shielding computations and was found to be in error as far as t
Publikováno v:
Journal of Pharmaceutical Sciences. 101:176-186
The dehydration/desolvation of two hydrate solvates of the pharmaceutically important compound finasteride (namely, bisfinasteride monohydrate monotetrahydrofuran and bisfinasteride monohydrate mono-1,4-dioxane) has been studied by solid-state nuclea
Autor:
Volker Kahlenberg, Thomas Gelbrich, Ulrich J. Griesser, Robin K. Harris, Neslihan Zencirci, David C. Apperley
Publikováno v:
Crystal Growth & Design. 10:302-313
Six of the more easily accessible forms of phenobarbital (Pbtl-I, II, III, IV, V, VI) were characterized by a variety of analytical methods (thermal analysis, solution calorimetry, X-ray diffraction methods, infrared, Raman and solid-state NMR spectr
Autor:
Alan Wong, Jonathan R. Yates, Robin K. Harris, Mark E. Smith, Lindsay S. Cahill, John V. Hanna, Jair C. C. Freitas
Publikováno v:
Chemistry - A European Journal. 15:9785-9798
Solid-state (25)Mg magic angle spinning nuclear magnetic resonance (MAS NMR) data are reported from a range of organic and inorganic magnesium-oxyanion compounds at natural abundance. To constrain the determination of the NMR interaction parameters (
Use of rotary echoes in 2H magic-angle spinning NMR for the quantitative study of molecular dynamics
Publikováno v:
Chemical Physics Letters. 475:58-63
The interaction of sample spinning and chemical dynamics is analysed in the context of 2 H magic-angle spinning NMR. We develop previous analyses and show that a metric based on the intensity of rotational echoes allows kinetic information to be deri