5. Electronic density cards

5.1 Definitions

X-ray diffraction by a crystal gives access to a function called electron density, which reflects a continuous distribution of electrons in the crystal lattice. In theory, the electron density ρ (x, y, z) at a point with relative coordinates (x, y, z) in the crystal lattice is calculated by the relation :

ρ (x, y, z) = (\frac{1}{V}) \sum_{h = − \infty}^{+ \infty}

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Electronic density cards

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Refinement of a crystallographic structure

Bibliography

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