ISSN:
1572-9001
Keywords:
X-ray crystallography
;
comparison method
;
hydrogen bonding
;
intercalation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Reasonable structural models are proposed for two intercalated compounds ofα-Zr(HPO4)2·H2O (α-ZrP), one with 2,2′-bipyridyl (A) and another one with 1,10-phenanthroline (B). The models are derived by considerations of the unit-cell geometry changes undergone byα-ZrP upon insertion of the organic molecules and on a set of general criteria of structural analysis, already developed by us and called the comparison method. If it is assumed that the water molecules in A and B keep the positions they have inα-ZrP, as fixed by their links to the phosphate-OH groups, the inserted molecules, while obeying the general conditions of optimum packing, establish interactions of the hydrogen-bonding type with the water molecules. This modeling gives for A and B a possible structural explanation to the maximum number of inserted molecules of the two species, as fixed by their stoichiometry.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00681205
