xray crstallography sharon

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X-ray crystallography

Presented By, Sharon .J. Roy Dept. of pharmaceutical Analysis Sub: Modern analytical and Research methods Grace college of pharmacy, Palakkad

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ELEMENTARY CRYSTALLOGRAPHYCRYSTALLOGRAPHY : Science of study of crystal study.

CRYSTAL : A homogenous solid formed by repeating 3dimensional pattern of atoms, ions or molecules & having smooth external surface 2

ELEMENTARY CRYSTALLOGRAPHYLATTICE- is a representation of crystal structure as an array of points in space.

UNIT CELL- is defined as the fundamental pattern of minimum number of atoms or molecules which represent the full character of the crystal.

LATTICE PLANES- parallel equidistant planes passing through the lattice points

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PREMITIVE CELL : Atoms at the corners but not in the middle of phases , not in the centre of cell..

NON PREMITIVE CELL : 3 Types,Body centred (I)Face centred (F)End centred (C)

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A UNIT CELL

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X-RAY CRYSTALLOGRAPHY

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INSTRUMENTATIONCrystals must be. Small in size Perfect Different substance crystallize differently

Mounting crystal.Exposing X- Rays.Reflections.Electron density map.10

THANK U..11