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2. Crystallographic point group - Wikipedia

   en.wikipedia.org/wiki/Crystallographic_point_group

   In crystallography, a crystallographic point group is a three dimensional point group whose symmetry operations are compatible with a three dimensional crystallographic lattice. According to the crystallographic restriction it may only contain one-, two-, three-, four- and sixfold rotations or rotoinversions. This reduces the number of ...

3. Coot (software) - Wikipedia

   en.wikipedia.org/wiki/Coot_(software)

   Coot is free software, distributed under the GNU GPL. It is available from the Coot web site [4] originally at the University of York, and now at the MRC Laboratory of Molecular Biology. Pre-compiled binaries are also available for Linux and Windows from the web page and CCP4, and for Mac OS X through Fink and CCP4. Additional support is ...

4. Wyckoff positions - Wikipedia

   en.wikipedia.org/wiki/Wyckoff_positions

   The Wyckoff positions are named after Ralph Wyckoff, an American X-ray crystallographer who authored several books in the field.His 1922 book, The Analytical Expression of the Results of the Theory of Space Groups, [3] contained tables with the positional coordinates, both general and special, permitted by the symmetry elements.

5. Mercury (crystallography) - Wikipedia

   en.wikipedia.org/wiki/Mercury_(crystallography)

   The Cambridge Crystallographic Data Centre (CCDC) developed and launched two programs, named ConQuest and Mercury [3] that run under Windows and various types of Unix, including Linux. ConQuest as a search interface to the Cambridge Structural Database (CSD) , with Fortran code that performs a large variety of tasks, such as two dimensional and ...

6. List of space groups - Wikipedia

   en.wikipedia.org/wiki/List_of_space_groups

   In Hermann–Mauguin notation, space groups are named by a symbol combining the point group identifier with the uppercase letters describing the lattice type.Translations within the lattice in the form of screw axes and glide planes are also noted, giving a complete crystallographic space group.

7. Hermann–Mauguin notation - Wikipedia

   en.wikipedia.org/wiki/Hermann–Mauguin_notation

   The full and short symbols for all 32 crystallographic point groups are given in crystallographic point groups page. Besides five cubic groups, there are two more non-crystallographic icosahedral groups (I and I h in Schoenflies notation) and two limit groups (K and K h in Schoenflies notation). The Hermann–Mauguin symbols were not designed ...