Transition metal or Main Group compounds having only one type of ligand are said to be homoleptic, e.g.
TaMe5.
See also: heteroleptic
Source:
PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1121 (https://doi.org/10.1351/pac199466051077)