Once you have asessed a proable crystal system based on symmetry and lattice parameters, you check for (systematic) extinctions of reflections. Moreover, you perform statistics on the intensities. Based on these terms, a google search brings you on the track.

Dear Ancy Albert the answer of Prof. Andreas Leineweber applies if you are the crystallographer measuring the diffraction data and solving the crystal structure.

In case if you simply have a crystal structure (published or from colleagues) as a .cif file and want to know the SG, either open it in a suitable viewer and find more info (e.g. in Mercury click "more info" on the middle bottom -> "Structure information") or open the file in a text editor and look for "space_group_name"

Dear Ancy Albert,

Look over the data below:

How do you find the space group of a crystal?

Space group determination entails the following steps: determine the Laue class: this is the symmetry of the intensity-weighted point lattice (diffraction pattern). 1,2,3,4,6=n-fold rotation axis; -n means inversion center (normally the - is written over the n); m means mirror.

What is space group in XRD?

A space group is thus some combination of the translational symmetry of a unit cell (including lattice centering), the point group symmetry operations of reflection, rotation and improper rotation (also called roto-inversion), and the screw axis and glide plane symmetry operations.

How do you read a space group?

The symbols of the cubic space group symbols refer to the lattice type (P, F, or I) followed by symmetry with respect to the x, y, and z axes, then the threefold symmetry of the body diagonals, followed lastly by any symmetry with respect to the face diagonals if present.

Search for: How do you read a space group?

How do you determine crystal structure from XRD data?

by measuring the reciprocal lattice space (k-Space) by XRD diffraction technique if you take Fourier transform of that it will give you bravais lattice. this bravais lattice will give you the information about crystal structure.

How to determine the structure of a specimen from XRD?

https://www.researchgate.net/post/How-to-determine-the-structure-of-a-specimen-from-XRD

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Crystal Systems and Space Groups

Paul D. Boyle Department of Chemistry University of Western Ontario

https://www.chemistry.mcmaster.ca/~xman/cccw18/files/Crystal_Systems_and_Space_Groups_coloured.pdf