Mossbauer investigations

Ni3Sn2S2 Valence states of nickel, tin, and sulfur in the ternary chalcogenide, and " Sn Mossbauer investigations, XPS and band structure calculations... 

One of the first in situ Mossbauer investigations of the behavior of iron oxides in electrochemical enviroments was the result of a fortuitous incident in which a specimen containing iron phthalo-... 

The morning session was devoted to a general explanation of the areas of application in studying magnetic properties, oxidation states, compounds, and metal structure. In the afternoon, reviews of the Mossbauer investigations of iron, tin, iodine, tellurium, and some of the rare earth elements were presented. The meeting concluded with a discussion on the future of Mossbauer Spectroscopy in which an interested audience participated. 

Boon J. A. (1971). Mossbauer investigations in the system Na20-Fe0-Si02. Chem. Geol, 7 153-169. 

The first and most studied Mossbauer nucleus, iron-57, displays specific catalytic behavior. Mossbauer investigations of supported microcrystallites of iron and its oxide have demonstrated the importance of the techniques in the investigation of surface structure and chemistry. The application to other nuclei that have important catalytic qualities indicates the potential importance of the study of supported microcrystallites by Mossbauer spectroscopy in future investigations of catalysts. Developments in experimental techniques enabling in situ investigations are enhancing the scope of the technique. 

In view of the importance of Ni, Ta, and Ru in catalysis, Mossbauer investigations of Ni, Ta, or Ru would have been of great interest. Unfortunately, the aforementioned difficulties encountered with these isotopes lead to the realization that although Mossbauer spectroscopy is in principle possible, almost no investigations have been reported using these isotopes. 

Fe Mossbauer spectroscopy has been used extensively to characterize catalysts, constituting the large majority of the Mossbauer investigations of catalysts. The... 

The preceding several years have witnessed an evolution in Mossbauer investigations in catalysis toward investigations of catalysts under working conditions, consistent with a general trend in spectroscopic characterization of catalysts. The trend in spectroscopy of catalysts is toward extreme conditions of temperature and pressure. Mossbauer spectroscopy is well suited to such conditions. 

Upon lyophilization the conformation of a protein can change too. From Mossbauer investigations of Hb (human) (41, 48) and Mb (horse heart) (48) in frozen solution and in dehydrated from it is known that the high-spin ferrous state in Hb is converted to an equal mixture of ferrous high-spin and low-spin iron in anhydrous Hb, whereas Mb and anhydrous Mb both contain ferrous high-spin iron only (Fig. 5). 

Extensive Mossbauer investigations of nitrogenase and FeMoco have been reported. Unlike EPR and EPR-based spectroscopies, which can be... 

B. Rodmacq and M. Pineri, Mossbauer investigation of Nation membranes, Rev. Phys. Appl., 1980, 15, 1178-1182 C. Heitner-Wirguin, E.R. Bauminger, A. Levy, F. Labensky de Kanter and S. Ofer, Clustering of ions in cation exchange membranes a Mossbauer study, Polym., 1980, 21, 1327-1329. 

Several Mossbauer investigations have confirmed that this hopping process takes place [17,25,26], although the exact interpretations of the spectra differ considerably. At 77 K where the Fe " " and Fe " " states are discrete one apparently sees two partially resolved hyperfine patterns with fields of 503 and 480 kG (see Fig. 10.7). The bar diagrams show a suggested breakdown... 

Mossbauer spectroscopy has been used to study a number of halogen-containing compounds of telluritun in which the formal oxidation state of tellurium is II (see also LB), IV or VI The knowledge of the existence of tellurium subhalides with low formal oxidation states of the chalcogen gave rise to Te-125 Mossbauer investigations of the subhalides, and additionally to 1-129 Mdssbauer studies on a-Tel... 

Mosbjek H, Poulsen KG (1971) Mossbauer investigation of the electronic structure of the Brown-Ring complex. Acta Chem Scand 25 2421-2427... 

Rie] Richter, F., Pepperhoff, W., Mossbauer Investigations on Magnetically Ordered Precipitates in Cu-Ni-Fe (in German), Z. Metallkd., 74(8), 500-503 (1983) (Experimental, Magn. Prop., Electronic Structure, 18)... 

The iron chemistry and the structural interpretation of the Fe containing basic building units are important for both science and industry. It is not possible in practice to summarize all data about Mossbauer investigations on iron in... 

Li J, Noll BC, Oliver AG, Schulz CE, Scheldt WR (2013) Correlated ligand dynamics in oxyiron picket fence porphyrins structural and Mossbauer investigations. J Am Chem Soc 135 15627-15641... 

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