Pentagonal pyramidal molecular geometry

In chemistry, pentagonal pyramidal molecular geometry describes the shape of compounds where in six atoms or groups of atoms or ligands are arranged around a central atom, defining the vertices of a pentagonal pyramid. It is one of the few molecular geometries with uneven bond angles.

Pentagonal pyramidal molecular geometry
Point groupC5v
Coordination number6
Bond angle(s)90°, 72°
μ (Polarity)>0



  1. Baran, E. (2000). "Mean amplitudes of vibration of the pentagonal pyramidal XeOF
    and IOF2−
    anions". J. Fluorine Chem. 101: 61–63. doi:10.1016/S0022-1139(99)00194-3.
  2. Housecroft, Catherine E.; Sharpe, Alan G. (2005). Inorganic Chemistry (2nd ed.). Pearson Prentice-Hall. p. 485. ISBN 0130-39913-2.

Pentagonal pyramid, Wolfram MathWorld

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