Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: M\"ossbauer Studies of Coordination Compounds using Synchrotron
  Radiation   Nuclear resonant forward scattering (NFS) and nuclear inelastic scattering
(NIS) of synchrotron radiation are fairly recent spectroscopic methods for the
investigation of complexes containing M\"ossbauer-active transition metal ions.
NFS, which can be regarded as M\"ossbauer spectroscopy in the time domain,
overcomes some limitations of conventional M\"ossbauer spectroscopy as has been
demonstrated especially for bioinorganic compounds. NIS extends the energy
range of conventional M\"ossbauer spectroscopy to the range of molecular
vibrations. Since NIS is sensitive only to the mean-square displacement of
M\"ossbauer nuclei it can be used as site-selective vibrational spectroscopy.
It complements usefully comparable techniques such as IR or Raman spectroscopy.
Examples are given for applications to spin crossover complexes, nitroprusside
compounds, heme model complexes and myoglobin.

21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat