Reminescences

Dependence of the Crystal Structure Parameters on the Size of the Structural Units in Some Isomorphous / Isostructural Series

Vladimir M. Petruševski orcid.org/0000-0002-4796-4929 ; Institut za hemija, PMF, Univerzitet »Sv. Kiril i Metodij«, Arhimedova 5, 91000 Skopje, Macedonia
Slobotka Aleksovska ; Institut za hemija, PMF, Univerzitet »Sv. Kiril i Metodij«, Arhimedova 5, 91000 Skopje, Macedonia

Abstract

Previous studies of kieserite analogues and also other systems (Tutton’s salts, alums and β-K₂SO₄ isomorphs) have shown that in a series of isostructural/isomorphous compounds the unit-cell parameters and volumes vary linearly with the eflfective ionic radii (the 'size') of the structural units. This is in line with the results of Shannon (Acta Cryst. A32 (1976) 751-767). Somewhat unexpectedly, other important parameters of the crystal structure, such as fractional atomic co-ordinates, exhibit systematic variations as well. An attempt is made to reveal the reasons that are at the origin of this finding.

Keywords

Hrčak ID:

132134

URI

https://hrcak.srce.hr/132134

Publication date:

1.3.1999.

Visits: 930 *