The correct space group of NaPF6 x H2O
Ilia A Guzei1, Joseph M Langenhan
1Chemistry Department, University of Wisconsin-Madison, 1101 University Ave, Madison, WI 53706, USA. iguzei@chem.wisc.edu
Abstract:
The structure of sodium hexafluorophosphate monohydrate, NaPF(6) x H(2)O, has been inadvertently redetermined, revealing that the previously reported space group, Imma, was assigned incorrectly, with the a and b axes interchanged. The correct space group is Pnna. The program PLATON [Spek (2003). J. Appl. Cryst. 36, 7-13] suggested both Imma and Pmma as possible space groups, but only Pnna is consistent with the systematic absences. The inter-ionic and hydrogen-bonding interactions in the lattice form a three-dimensional network.
Related Concept Videos
VSEPR Theory and the Basic Shapes
Hybridization of Atomic Orbitals I
Hybridization of Atomic Orbitals II
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Crystallographic Point Groups


