Introduction to the Space Groups |
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a(hkl a₁ a₂ b₁ b₂ Berkeley Berkeley C₁ C₂ calculation CALIFORNIA LIBRARY cell of type centre of symmetry co-ordinates coefficients column complete matrix corresponding crystallographic deduced digonal axis digonal screw distance elementary cell equivalent points example extinction rules F(hkl Fmmm follows form hkl form of equivalent formula Fourier series function glide component glide plane glide translation half-periods Harker-lines Harker-matrix Harker-points HM symbol ī ī indicated International Tables give intersection matrix metry mirror monoclinic Niggli occur orientations ortho-rhombic P(hkl p(xyz P₁ parallel parallelepiped passes the origin Pban plane hkl plane of symmetry Pmmm Pnna Q(hkl reader represented resp screw axes shifting space group space groups D2 structure factor sub-groups symmetry centre symmetry elements symmetry planes triclinic unit cell UNIVERSITY OF CALIFORNIA x y z Y₁ Y₂ zero אן אן אן