International
Tables for
Crystallography
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2010). Vol. B, ch. 3.4, pp. 455-456   | 1 | 2 |

## Section 3.4.11. Reference formulae for particular values of n

D. E. Williamsa

aDepartment of Chemistry, University of Louisville, Louisville, Kentucky 40292, USA

### 3.4.11. Reference formulae for particular values of n

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In this section let and . Let ; . If the geometric mean combining law holds, ; letThenwhereandThe formulae below describe in terms of and ; the distance is simply represented by .