Madelung constants of both simple and complex salts can be reduced to a common scale by taking the nearest‐neighbor distance as the unit distance and then dividing by half the sum of the squares of the charges of all the atoms in the stoichiometric unit. These ``reduced Madelung constants,'' α, can be predicted within a few percent by the relation α=1.89—1/m, where m is the harmonic mean coordination number. Madelung constants have been calculated for LaOCl, YOF, ReO3, and several perovskite structures for comparison with the predictions.
REFERENCES
1.
2.
A negative sign has been introduced because now is taken as negative.
3.
4.
5.
6.
7.
8.
9.
D. H.
Templeton
and C. H.
Dauben
, J. Am. Chem. Soc.
75
, 6069
(1953
).10.
11.
12.
Note added February 15, 1955: From the data of
C.
Delorme
and F.
Bertaut
(J. Phys. Radium
14
, 129
(1953
)) one can derive compared with for
This content is only available via PDF.
© 1955 American Institute of Physics.
1955
American Institute of Physics
You do not currently have access to this content.
