Pentagonal pyramidal molecular geometry

Pentagonal pyramidal molecular geometry

Steric number	7
Coordination number	6
Bond angle(s)	72°, 90°, 144°

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.

AX₆E₁

Examples

XeOF−
5
IOF2−
5

References

Pentagonal pyramid, Wolfram MathWorld

Molecular geometry

Coordination number 2	Linear Bent

Coordination number 3	Trigonal planar Trigonal pyramidal T-shaped

Coordination number 4	Tetrahedral Square planar Seesaw

Coordination number 5	Trigonal bipyramidal Square pyramidal Pentagonal planar

Coordination number 6	Octahedral Trigonal prismatic Pentagonal pyramidal Distorted octahedral

Coordination number 7	Pentagonal bipyramidal

Coordination number 8	Square antiprismatic

Coordination number 9	Tricapped trigonal prismatic Capped square antiprismatic

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