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Cory M. Widdifield
Researcher at University of Lyon
Publications - 38
Citations - 1857
Cory M. Widdifield is an academic researcher from University of Lyon. The author has contributed to research in topics: Nuclear magnetic resonance spectroscopy & Solid-state nuclear magnetic resonance. The author has an hindex of 22, co-authored 37 publications receiving 1589 citations. Previous affiliations of Cory M. Widdifield include University of Ottawa & Durham University.
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Journal ArticleDOI
The structure and binding mode of citrate in the stabilization of gold nanoparticles
Hind Al-Johani,Hind Al-Johani,Edy Abou-Hamad,Abdesslem Jedidi,Abdesslem Jedidi,Cory M. Widdifield,Jasmine Viger-Gravel,Shiv Shankar Sangaru,David Gajan,Dalaver H. Anjum,Samy Ould-Chikh,Mohamed N. Hedhili,Andrei Gurinov,Michael J. Kelly,Mohamad El Eter,Luigi Cavallo,Lyndon Emsley,Jean-Marie Basset +17 more
TL;DR: 13C and 23Na NMR experiments show that Na+ ions are present near the gold surface, indicating that carboxylate binding occurs as a 2e- L-type interaction for each oxygen atom involved, which has broad potential to probe the binding of a variety of ligands to metal nanoparticles.
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Powder crystallography of pharmaceutical materials by combined crystal structure prediction and solid-state 1H NMR spectroscopy
Maria Baias,Cory M. Widdifield,Jean-Nicolas Dumez,Hugh P. G. Thompson,Timothy G. Cooper,Elodie Salager,Sirena Bassil,Robin S. Stein,Anne Lesage,Graeme M. Day,Lyndon Emsley +10 more
TL;DR: For cocaine, flutamide and flufenamic acid, it is found that the assigned (1)H isotropic chemical shifts provide sufficient discrimination to determine the correct structures from a set of predicted structures using the root-mean-square deviation between experimentally determined and calculated chemical shifts.
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Dynamic Nuclear Polarization Enhanced NMR Spectroscopy for Pharmaceutical Formulations
Aaron J. Rossini,Cory M. Widdifield,Alexandre Zagdoun,Moreno Lelli,Martin Schwarzwälder,Christophe Copéret,Anne Lesage,Lyndon Emsley +7 more
TL;DR: DNP enables the rapid acquisition with natural isotopic abundances of one- and two-dimensional (13)C and (15)N solid-state NMR spectra of the formulations while preserving the microstructure of the API particles.
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Cooperative Effect of Monopodal Silica-Supported Niobium Complex Pairs Enhancing Catalytic Cyclic Carbonate Production.
Valerio D'Elia,Hailin Dong,Aaron J. Rossini,Cory M. Widdifield,Sai V. C. Vummaleti,Yury Minenkov,Albert Poater,Edy Abou-Hamad,Jérémie D. A. Pelletier,Luigi Cavallo,Lyndon Emsley,Lyndon Emsley,Jean-Marie Basset +12 more
TL;DR: With the support of a systematic DFT study carried out on model silica surfaces, the observed differences in catalytic efficiency were correlated with an unprecedented cooperative effect between two neighboring Nb centers on the surface of 2a, in an excellent agreement with previous discoveries regarding the mechanism of NbCl5-catalyzed cycloaddition in the homogeneous phase.
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Understanding chemical shielding tensors using group theory, MO analysis, and modern density‐functional theory
TL;DR: In this article, the relationship between molecular symmetry, molecular electronic structure, and chemical shielding tensors is discussed, and the visualization of the three-dimensional nature of CS is described.