Symmetry Pages

Tetragonal: D2d (−42m)

Symmetry Pages

D2d E C2 2S4 2C2 d Linear Quadratic Cubic
A1 1 1 1 1 1   x2+y2, z2 xyz
A2 1 1 1 -1 -1 Iz   z(x2y2)
B1 1 1 -1 1 -1   x2-y2  
B2 1 1 -1 -1 1 z xy z3, z(x2+y2)
E 2 -2 0 0 0 (x, y), (Ix, Iy) (xz, yz) (xz2, yz2), (xy2, x2y), (x3, y3)

D2d stereograph D2d solid C3H4
Stereograph 3D object Molecule C3H4(Allene)

Revised: © University of Newcastle upon Tyne, UK