Nuclear magnetic resonance spectroscopy of paramagnetic

Webb, G. A. In Nuclear Magnetic Resonance Spectroscopy of Paramagnetic Species, Money, E. F. (ed). Academic Press New York, 1975, pp. 211-259. 

Nuclear magnetic resonance spectroscopy of paramagnetic (PNMR) species is a valuable experimental technique able to provide unique information on the molecular electronic structure, geometry, and reactivity of radicals such as coordination compounds, metalloproteins, and organic free radicals used as spin labels and spin probes [18]. In the analysis of PNMR spectra, experimentalists usually decompose the chemical shift into three contributions the reference (or orbital ) shift 5 , ... 

Nuclear magnetic resonance spectroscopy of the solutes in clathrates and low temperature specific heat measurements are thought to be particularly promising methods for providing more detailed information on the rotational freedom of the solute molecules and their interaction with the host lattice. The absence of electron paramagnetic resonance of the oxygen molecule in a hydroquinone clathrate has already been explained on the basis of weak orientational effects by Meyer, O Brien, and van Vleck.18... 

R600 R.-J. Cheng and P.-Y. Chen., Electronic Structures of Metallopor-phyrins - Applications of Paramagnetic Nuclear Magnetic Resonance Spectroscopy , Huaxue, 2000, 58,459... 

Nuclear magnetic resonance spectroscopy ( C CP/MAS Solid State NMR) and Fourier transform infrared spectroscopy (FT-IR) were also performed for the freeze dried NOM sample. The results were both very noisy and paramagnetic compounds such as iron and manganese interfered with the - C NMR analysis. After 20 h of run time the sample showed mostly alkyl and alkyl-oxygen carbon, thus very little aromatic compounds. 

It is therefore interesting and important to have a look at the results of investigations made in this respect using various techniques, e.g. nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy and electron paramagnetic resonance spectroscopy. The major and overall findings are discussed below. 

Alam TM, Celina M, Collier IP, Currier BH, Currier JH, Jackson SK, Kuethe DO, Timmins GS. -irradiation of ultrahigh-molecular-weight polythylene Electron paramagnetic resonance and nuclear magnetic resonance spectroscopy and imaging studies of the mechanism of subsurface oxidation. J Polym Sci Part A Polym Chem 2004 42 5929-59. 

Antonijevic S, Wimperis S (2005) Separation of quadrupolar and chemical/paramagnetic shift interactions in two-dimensional H (I = 1) nuclear magnetic resonance spectroscopy. J Chem Phys 122 044312... 

Kurreck, H., Kirste. B., and Lubitz, W. (1988). Electron Nuclear Double Resonance Spectroscopy of Radicals in Solution, VCH, New York. Pilbrow, J. R. (1990). Transition Ion Electron Paramagnetic Magnetic Resonance, Oxford Univ. Press, London. 

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