What is equatorial and axial position in trigonal bipyramidal?

According to the VSEPR theory of molecular geometry, an axial position is more crowded because an axial atom has three neighboring equatorial atoms (on the same central atom) at a 90° bond angle, whereas an equatorial atom has only two neighboring axial atoms at a 90° bond angle.

What is the angle of trigonal bipyramidal?

120o
NOTES: This molecule is made up of 5 sp3d hybrid orbitals. Three orbitals are arranged around the equator of the molecule with bond angles of 120o. Two orbitals are arranged along the vertical axis at 90o from the equatorial orbitals.

What are the ideal bond angles for a trigonal bipyramidal molecule?

When a molecule has trigonal bipyramidal geometry bond angles are 120°, 90°.

How many 90 degree angles are there in trigonal bipyramidal?

The atoms of trigonal bipyramidal molecules are arranged on two planes that intersect at the central atom. The two planes form a 90 degree angle.

Which position is equatorial position?

Equatorial position is the horizontal chemical bonding in the chair conformation of cyclohexane. We can find this type of chemical bonding in the chair conformation of cyclohexane. Due to the minimized steric hindrance, the chair conformation is the most stable structure for the cyclohexane molecule.

How do you determine axial and equatorial positions?

Axial bonds alternate up and down, and are shown “vertical”. Equatorial groups are approximately horizontal, but actually somewhat distorted from that (slightly up or slightly down), so that the angle from the axial group is a bit more than a right angle — reflecting the common 109.5o bond angle.

How many bond angles are present in 90 PCI?

Note. There are two P–Cl bonding environments in this molecule: Each equatorial P–Cl bond makes two 90° and two 120° bond angles with the other bonds in the molecule. Each axial P–Cl bond makes three 90° and one 180° bond angles with the other bonds in the molecule.

What is Equatorial angle?

The bonds to non-ring atoms are termed axial or equatorial, depending on the bond angle. Bonds to non-ring atoms with angles of about 90° to the ring plane are termed axial. Bonds to non-ring atoms which make only a small angle compared with the plane of the ring are termed equatorial.

Which position is more stable axial or equatorial?

In the example of methylcyclohexane the conformation where the methyl group is in the equatorial position is more stable than the axial conformation by 7.6 kJ/mol at 25o C. Consequently, substituted cyclohexanes will preferentially adopt conformations in which the larger substituents are in the equatorial orientation.