Mossbauer Spectra of Inorganic

Mossbauer spectra of inorganic compounds bonding and structure. G. M. Bancroft and R. H. Platt, Adv. Inorg. Chem. Radiochem., 1972,15, 59-258 (577). 

Mossbauer Spectra of Inorganic Compounds Bonding and Structure... 

Since many metallobiochemicals can be considered complexes, the Mossbauer spectra of these chemicals can be interpreted using the results previously discussed for inorganic complexes. An important class of metallobiochemicals is that in which the metal is iron. The Mossbauer spectroscopy of a number of these has been studied, and the results have been tabulated by Gonser and Grant (20). The hemoprotein, hemo-... 

Since the early days of application of Mossbauer spectroscopy in solid state physics and inorganic chemistry, electronic structure calculations have been performed to rationalize and predict the Mossbauer parameters obtained. In the beginning, calculations were applied to single ions, but later semiempirical methods could be applied to small molecules, too. Early density functional theory (DFT) methods, like the self-consistent charge (SCC)-Xa method could be successfully applied to larger molecules. For more than a decade, DFT methods with all-electron basis sets have also been applied to large bioinorganic molecules. These methods allow the determination of Mossbauer parameters with impressive accuracy and have become a valuable tool for the interpretation of Mossbauer spectra. 

The Lamb-Mossbauer factor /lm, which is difficult to determine experimentally as well as compntationally, does not belong to the most common Mdssbaner parameters in the field of inorganic chemistry. It can be of importance, however, when Mossbauer spectra are used to determine for a given sample the fractions of different species containing the same Mossbauer isotope. This is the case, for instance, for iron spin-crossover complexes where Mdssbaner spectroscopy can be used to measure the temperature- or pressure-dependent fraction of different spin isomers. The first approach to estimate the change of the Lamb-Mdssbaner factor upon spin crossover has been restricted to molecular vibrations, neglecting the important contribution that arises from intermolecular vibrations. ... 

Spectroscopic Properties of Inorganic and Organometallic Compounds, ed. N. N. Greenwood, vols. 1 (1968), 2 (1969), 3 (1970). Each volume surveys the literature of the year before publication, under seven main chapter headings Nuclear magnetic resonance spectroscopy Nuclear quadrupole resonance spectra Electron spin resonance spectroscopy Microwave spectroscopy Vibrational spectra Electronic spectra and Mossbauer spectroscopy. 

R.V. Parish (1990), NMR, NQR, EPR and Mossbauer Spectroscopy in Inorganic Chemistry, Ellis Horwood, Chichester - A text dealing with the theory, applications and interpretation of spectra includes end-of-chapter problems. 

Spectroscopic Properties of Inorganic and Organometallic Compounds, Vol. 1, 1968 (authoritative and comprehensive reviews of nmr, nqr, esr, vibrational, electronic and Mossbauer spectra). 

Abstract. Undoubtedly there is special interest focused on the capability of Mossbauer effect spectroscopy as a useful technique for the elucidation of scientific problems in structural chemistry and bonding phenomena in inorganic materials. In the present discussion an attempt has been made to summarize some of the basic and important aspects in interpretation of spectral analysis by means of application on a routine base, of Mossbauer spectroscopy in materials science. A number of applications extracted mainly from data in the literature have been used for different kind of inorganic materials (including glasses and ceramic materials) to illustrate the kind of information one may obtain from the Mossbauer spectra with Fe, Sn, Te and Sb types of Mossbauer isotopes. 

In the present discussion we present a brief review of the fundamental equations as well as some of the basic and very important aspects in relation to the Mossbauer isotopes and transitions. Instrumentation and spectral analysis through a routine application of the method, follows in Sect. 7 by some representative applications to inorganic materials. This paper is not intended to be an extensive summary of the literatura data on the problem but aims to indicate what kind of information one can obtain from Mossbauer spectra, especially from those involving Fe, Sn, Te and Sb Mossbauer isotopes. The authors consider the topics discussed here to be of practical interest for chemists and material science engineers. 

Figure 22 summarizes the exact S values of a selection of Sb(III) and Sb(V) inorganic compounds (right side) and organo-antimony compounds (V and III) [27]. The bars can be treated as useful tools for characterization of Sb Mossbauer spectra. 

Selected properties of the element are shown in Table 1.1.1. It is in Group 14 of the Periodic Table, with the electronic configuration [Kr] 4d ° 5s 5p its principal valence state is Sn(IV), though Sn(II) inorganic compounds are common, and many stannous organic compounds, with specially designed structures, have been prepared in recent years. Tin has 10 stable isotopes (Table 1.1.2), which is the largest number for any element, and results in very characteristic mass spectra. The " Sn and Sn isotopes, each with spin 1/2, are used in NMR spectroscopy. The y-active " Sn isotope, which is prepared by the neutron-irradiation of enriched Sn, is used in Mossbauer spectroscopy. 

Note that some spectra in the literature use the source as the standard. To convert these data to the gold standard, 1.21 mms should be added to the B. The QS value is, of course, unaffected. R. V. Parish, in Mossbauer Spectroscopy Applied to Inorganic Chemistry (Ed G. J. Long), Vol. 1, Plenum Press, New York, 1984, p. 577. 

The interdisdplinaiy approach of the book shows up in the careful consideration given to many experimental techniques such as vibrational (infra-red and Raman), electronic (visible and ultraviolet), Mossbauer, magnetic resonance, and photoelectron spectra, with data for gaseous and solid samples as well as selected facts about solution chemistry. The book could not have been written a few years ago, and is likely to remain a highly information survey of modem inorganic chemistry and chemical physics. ... 

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