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Mössbauer spectroscopy in the time domain applied to the study of single‐crystalline guanidinium nitroprusside

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Abstract

Guanidinium nitroprusside GNP, (CN3H6)2[Fe(CN)5NO] has been investigated in single‐crystalline form by nuclear resonant forward scattering (NFS) using synchrotron radiation (Mössbauer spectroscopy in the time domain). This method provides a direct measure of effective absorber thickness and therefore also of the Lamb–Mössbauer factor f LM. GNP has the advantage that all [Fe(CN5)NO]2- anions are practically aligned within the crystal. For the two different crystal orientations, with the crystallographic a- and c-direction parallel to the synchrotron beam, respectively, we have obtained f LM (a)= 0.122(10) and f LM (c)= 0.206(10), i.e., GNP exhibits significant anisotropic vibrational behavior. The quantum beat pattern of the NFS spectra obtained for the two different crystal orientations is discussed on the basis of radiation characteristics of the polarized synchrotron beam and the multipole transitions of oriented 57Fe nuclei.

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Authors and Affiliations

  1. Institut für Physik, Medizinische Universität zu Lübeck, Ratzeburger Allee 160, D‐23538, Lübeck, Germany

    H. Grünsteudel, H. Winkler & A.X. Trautwein

  2. European Synchrotron Radiation Facility, BP 220, F‐38043, Grenoble, France

    H. Grünsteudel

  3. Department of Atomic Physics, Sofia University, 5 James Bouchier Blvd., 1126, Sofia, Bulgaria

    V. Rusanov

  4. EMBL Outstation Hamburg, Notkestraße 85, Gebäude 25A, D‐22603, Hamburg, Germany

    W. Meyer‐Klaucke

Authors
  1. H. Grünsteudel
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  2. V. Rusanov
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  3. H. Winkler
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  4. W. Meyer‐Klaucke
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  5. A.X. Trautwein
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Grünsteudel, H., Rusanov, V., Winkler, H. et al. Mössbauer spectroscopy in the time domain applied to the study of single‐crystalline guanidinium nitroprusside. Hyperfine Interactions 122, 345–351 (1999). https://doi.org/10.1023/A:1012647101443

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  • DOI: https://doi.org/10.1023/A:1012647101443

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