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CHEM 750/751 Solid State NMR Spectroscopy. Coursework

Coursework Instructions:

See reference. Attach 2 model essay. (ssnmr1 and ssnmr2)

 

CHEM 750/751
Solid State NMR Spectroscopy 
Assignments must be handed in to the Student Resource Centre by Friday the 3rd ofApril, 3 pm.
Listed below are two papers describing applications of solid-state NMR spectroscopy tocertain chemical problems.1-2 Discuss these applications for these papers, making referenceto all of the following points in each case:
(a) The nature of the NMR experiment (static, magic angle spinning, crosspolarizationor single pulse excitation, high power proton decoupling), andthe reason why this particular type of experiment was used.
(b) The nature of the nuclear interaction(s) evident in the spectra (scalar or dipolarspin-spin coupling, isotropic or anisotropic nuclear shielding, nuclearquadrupole coupling) and an explanation of how these interactions determinethe form of the observed spectra.
(c) The relationship of the NMR parameters (chemical shifts, coupling constants)to the structural or other properties (e.g. dynamics) of the materials under study.
(d) The information about the structure, dynamics or other properties of the materialsthat have been deduced about the materials from the NMR studies, and the extentto which this relies on other measurements.
Most of the information required for the above is contained in the cited articles, butreference(s) to other relevant publications may also be necessary. If so, you should cite therelevant references in your answer.
The whole assignment/essay should not be longer than 1000 words (without references).References:
1. Zujovic, Z.; Wheelwright, W. V. K.; Kilmartin, P. A.; Hanna, J. V.; Cooney, R. P., Structuralinvestigations of perlite and expanded perlite using 1H, 27Al and 29Si solid-state NMR. CeramicsInternational 2018, 44 (3), 2952-2958.2. Zujovic, Z. D.; Gizdavic-Nikolaidis, M. R.; Kilmartin, P. A.; Idriss, H.; Senanayake, S. D.;Bowmaker, G. A., Solid-state NMR study of 15N labelled polyaniline upon reaction with DPPH.Polymer 2006, 47 (4), 1166-1171

Coursework Sample Content Preview:

Solid State NMR Spectroscopy
Student’s Name
Institutional Affiliation
Solid-State NMR Spectroscopy
Question a
Nuclear Magnetic Resonance (NMR) are approaches that utilized in the observation of magnetic nuclei within a steady and constant magnetic field. The nuclei are usually perturbed by a weaker oscillating magnetic field and respond by producing an electromagnetic signal with a specific frequency characteristic. These types of experiments are preferred because of the relative ease in preparing samples and practical ability to quantify metabolite levels. With these experiments, users can obtain very rich and comprehensive structural information. The NMR spectroscopy is essential in identifying the structure, behavior, and concentration of the substances. When substances or reactions are investigated using NMR experiments, there is much better insight into the mechanism of the reactions. Solid-state NMR spectroscopy is usually characterized by the presence of interactions that are dependent on directions. In this regard, these type of NMR experiments requires specialized hardware due to the high-power angular magnetic fields as well as the radio frequency irradiation (Zujovic et al., 2006; Zujovica, Wheelwright, Kilmartin, Hanna, & Cooney, 2018).
Question b
Several nuclear reactions occur in solid-state NMR reactions. In dipolar spin-spin coupling, the nuclear reaction showcases a magnetic dipole moment, which assists in generating a magnetic field to interact with the dipole moments of the other nuclei. Notably, the magnitude of each interaction is directly dependent on the spin species, as well as other factors such as orientation, internuclear distance, in line with the magnetic field of the vector connecting the two nuclei. Quadrupole coupling or interaction refers to the nuclei spins with a quantum number less than Π…, with a non-spherical distribution of charge. This type of charge distribution interacts with an electric field gradient resulting from non-symmetry to offer ch...
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