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Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data

Received: 22 February 2021    Accepted: 10 March 2021    Published: 1 April 2021
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Abstract

It is a relatively easy task to the solution of the so-called phase problem in crystallography, by applying ab initio phasing methods for the efficiency of structure solution from single-crystal data. Their effective application to powder x-ray diffraction data is still a real challenge unless the size of the structure is moderate. The percentage of principal success hinges on a number of factors; included are the quality of the experimental pattern, the success of the pattern-decomposition programs, the quality of the extracted structure-factor from the experimental pattern via the Le Bail or Pawley methods, the normalization of structure-factor process, the experimental resolution and the straightforward of the phasing process. This paper aims at providing an overall overview of the reciprocal space RS methods (ab initio phasing methods of crystal structure) as well as the direct methods, Patterson function and maximum entropy methods. This paper will also describe the factors affecting phasing by reciprocal space methods and the limitation of reciprocal space methods. Those are available for carry out the structure solution, in order to provide a clear theoretical account, experimental practice and computing approaches regarding and describe an outline of the solution process of phase problem by powder X-ray diffraction, leads to the best structure solution using practical examples.

Published in International Journal of Materials Science and Applications (Volume 10, Issue 2)
DOI 10.11648/j.ijmsa.20211002.11
Page(s) 25-29
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Powder Data, Data Quality, Reciprocal Space, Structure Solution, Ab initio Phasing Methods, Pattern Decomposition, Structure Factor

References
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  • APA Style

    Mbark Ait Mouha, Dounia Tlamsamani, Khalid Yamni. (2021). Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data. International Journal of Materials Science and Applications, 10(2), 25-29. https://doi.org/10.11648/j.ijmsa.20211002.11

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    ACS Style

    Mbark Ait Mouha; Dounia Tlamsamani; Khalid Yamni. Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data. Int. J. Mater. Sci. Appl. 2021, 10(2), 25-29. doi: 10.11648/j.ijmsa.20211002.11

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    AMA Style

    Mbark Ait Mouha, Dounia Tlamsamani, Khalid Yamni. Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data. Int J Mater Sci Appl. 2021;10(2):25-29. doi: 10.11648/j.ijmsa.20211002.11

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  • @article{10.11648/j.ijmsa.20211002.11,
      author = {Mbark Ait Mouha and Dounia Tlamsamani and Khalid Yamni},
      title = {Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data},
      journal = {International Journal of Materials Science and Applications},
      volume = {10},
      number = {2},
      pages = {25-29},
      doi = {10.11648/j.ijmsa.20211002.11},
      url = {https://doi.org/10.11648/j.ijmsa.20211002.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20211002.11},
      abstract = {It is a relatively easy task to the solution of the so-called phase problem in crystallography, by applying ab initio phasing methods for the efficiency of structure solution from single-crystal data. Their effective application to powder x-ray diffraction data is still a real challenge unless the size of the structure is moderate. The percentage of principal success hinges on a number of factors; included are the quality of the experimental pattern, the success of the pattern-decomposition programs, the quality of the extracted structure-factor from the experimental pattern via the Le Bail or Pawley methods, the normalization of structure-factor process, the experimental resolution and the straightforward of the phasing process. This paper aims at providing an overall overview of the reciprocal space RS methods (ab initio phasing methods of crystal structure) as well as the direct methods, Patterson function and maximum entropy methods. This paper will also describe the factors affecting phasing by reciprocal space methods and the limitation of reciprocal space methods. Those are available for carry out the structure solution, in order to provide a clear theoretical account, experimental practice and computing approaches regarding and describe an outline of the solution process of phase problem by powder X-ray diffraction, leads to the best structure solution using practical examples.},
     year = {2021}
    }
    

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    T1  - Crystal Structure: Reciprocal Space Methods for Carry out the Structure Solution from Powder Data
    AU  - Mbark Ait Mouha
    AU  - Dounia Tlamsamani
    AU  - Khalid Yamni
    Y1  - 2021/04/01
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ijmsa.20211002.11
    DO  - 10.11648/j.ijmsa.20211002.11
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
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    EP  - 29
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20211002.11
    AB  - It is a relatively easy task to the solution of the so-called phase problem in crystallography, by applying ab initio phasing methods for the efficiency of structure solution from single-crystal data. Their effective application to powder x-ray diffraction data is still a real challenge unless the size of the structure is moderate. The percentage of principal success hinges on a number of factors; included are the quality of the experimental pattern, the success of the pattern-decomposition programs, the quality of the extracted structure-factor from the experimental pattern via the Le Bail or Pawley methods, the normalization of structure-factor process, the experimental resolution and the straightforward of the phasing process. This paper aims at providing an overall overview of the reciprocal space RS methods (ab initio phasing methods of crystal structure) as well as the direct methods, Patterson function and maximum entropy methods. This paper will also describe the factors affecting phasing by reciprocal space methods and the limitation of reciprocal space methods. Those are available for carry out the structure solution, in order to provide a clear theoretical account, experimental practice and computing approaches regarding and describe an outline of the solution process of phase problem by powder X-ray diffraction, leads to the best structure solution using practical examples.
    VL  - 10
    IS  - 2
    ER  - 

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Author Information
  • Department of Chemistry, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco

  • Department of Chemistry, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco

  • Department of Chemistry, Faculty of Sciences, Moulay Ismail University, Meknes, Morocco

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