Which d orbitals are involved in sp3d2 and d2sp3 hybridization respectively?

Which d orbitals are involved in sp3d2 and d2sp3 hybridization respectively?

sp3d2 or d2sp3 are hybridisation for the octahedral geometry.

In octahedron, the bonds are formed parallel to the x, y, and z-axes, hence dx2-dy2 and dz2 will be used to form the hybrid orbitals.

Coordination number Type of hybridization Distribution of hybrid orbitals in space Types of d orbitals
4 sp3 Tetrahedral
4 dsp2 Square planar dx2-y2
5 sp3d Trigonal bipyramidal dz2
6 sp3d2 (nd orbitals are involved; outer orbital complex or high-spin or spin-free complex) Octahedral dx2-dy2 and dz2
6 d2sp3 [(n − 1)d orbitals are involved; inner orbital complex or low-spin or spin-paired complex] Octahedral dx2-dy2 and dz2