Are d2sp3 and sp3d2 hybridisation the same ?
no i don't think so
d2sp3, this type of hybridisation is known as hybridisation of metals or metal ions in coordination compounds.
here , d2sp3 complexes are called inner orbital complex
it is a diamagnetic complex
in coordination compounds , empty orbital of metal overlap with fullyfilled orbital of ligand
HOPE THIS HELPS :-)