Non-space-group symmetry in crystallography
β Scribed by Konrad Fichtner
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 745 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0898-1221
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β¦ Synopsis
After presenting the basic ideas of the characterization of symmetries of a "classical crystal" with its three-dimensional periodicity, approaches are discussed to describing relevant features of certain crystal structures by additional symmetries. Application and usefulness of some conceptions of nonspace-group symmetries are illustrated by examples. Polytype structures or OD structures in the sense of Domberger-Schiff are discussed in more detail.
π SIMILAR VOLUMES
The polymeric title compound, {[Co(C 4 H 4 N 2 )(H 2 O) 4 ]-(C 8 H 4 O 4 )} n , when refined in Imm2 from the diffraction intensities originally used for refinement in Immm [Yang, Li, Cao & Yao (2003). Acta Cryst. E59, m961-m963], is an ordered structure whose Co II atom, pyrazine ligand and phthala