ISSN:0889-311X    

DOI:10.1080/08893119208032963

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

Brucite-related double layer structures are characterized by a regular but distinct stacking of [Me2x+Me3+(OH)2x+2]+ octahedral layers with ordered cation distribution and usually x = 2 or x = 3, alternating with anionic {A·nH2O}- interlayers. The stacking sequence of the layers is rhombohedral (3R) or hexagonal (2H) parallel to [001]. Evidence of order by X-ray experiments is largely prohibited by the weakness of the superstructure reflections due to pseudosymmetry ruled by structural modules and crystal imperfection. The ordered distribution of cations influences the distribution of anions and the maximum ideal water contents of interlayers.

ISSN:0889-311X    

DOI:10.1080/08893119208032964

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

The rôle of the electron density distribution of the ground state in the theory, describing the structure and properties of the multielectron systems, is considered. Modern methods of deducing the electron density from X-ray coherent scattering data are presented. Examples of studying crystal properties from the experimental information obtained are given. It is emphasized, that the combination of theoretical methods with the possibilities of experiment promises the development of new methods for solid state studies.

ISSN:0889-311X    

DOI:10.1080/08893119208032965

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0889-311X    

DOI:10.1080/08893119208032966

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0889-311X    

DOI:10.1080/08893119208032962

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor