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22 space-group changes.

Dore Augusto Clemente1, Armando Marzotto

  • 1Dipartimento di Ingegneria dei Materiali e di Chimica Applicata, Università di Trieste, Sede di Pordenone, Via Prasecco 3/A, 33170 Pordenone, Italy. clemente@units.it

Acta Crystallographica. Section B, Structural Science
|January 30, 2003
PubMed
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This study revises 22 crystal structures, identifying transitions from lower to higher symmetry. These findings enhance understanding of crystallographic and molecular properties.

Area of Science:

  • Crystallography
  • Solid-state chemistry
  • Materials science

Background:

  • Crystal structures are fundamental to understanding material properties.
  • Accurate space-group assignment is crucial for reliable crystallographic data.
  • Previous studies have documented various crystal structure transformations.

Purpose of the Study:

  • To report and analyze 22 instances of crystal structure revisions.
  • To investigate transitions from low to higher symmetry space groups.
  • To correlate symmetry changes with crystallographic, molecular, and spectroscopic properties.

Main Methods:

  • Analysis of crystallographic data for 22 crystal structures.
  • Re-evaluation of space-group assignments.
  • Comparison of original and revised structural parameters.

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Main Results:

  • Identified 22 cases of space-group changes towards higher symmetry.
  • Revisions involved structures initially assigned to P2(1) (15 cases), P1 (6 cases), and P1 (1 case).
  • Demonstrated the significance of higher-symmetry elements in understanding crystal structures.

Conclusions:

  • Space-group revisions can reveal higher symmetry, impacting structural interpretation.
  • Higher symmetry elements provide valuable insights into molecular dimensions and properties.
  • This work contributes to a more accurate understanding of crystallographic data and material characteristics.