Xray Diffraction

Question 1

Single Crystal XRD

Answer 1

3D diffraction pattern
Structure is proportional to intensity and location of spots

Question 2

Powder X-ray diffraction

Answer 2

Collective scattering cones
1D data

Question 3

Define polymorphism

Answer 3

2 different crystal structures of the same compound these have different properties

Question 4

Factors that effect choice of analytical technique

Answer 4

Surface sensitivity
Bulk sensitivity
Types of beam: electron or X-ray or neutron
Types of interaction: absorption or diffraction