heteroleptic

https://doi.org/10.1351/goldbook.H02808
Transition metal or Main Group compounds having more than one type of ligand.
See also:
homoleptic
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1120 [Terms] [Paper]