homoleptic

https://doi.org/10.1351/goldbook.H02850
Transition metal or Main Group compounds having only one type of @L03518@ 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 [Terms] [Paper]