Trispyrazolylborate



![Structure of the anionic piano stool complex [TpMeMo(CO)3]− together with the counterion [NEt4]+.](/uploads/202502/17/TpMotriscarbonyl0433.jpg)
In inorganic chemistry, the trispyrazolylborate ligand, abbreviated Tp, is an anionic tridentate and tripodal ligand. Trispyrazolylborate refers specifically to the anion [HB(C3N2H3)3], but the term trispyrazolylborate refers to derivatives substituted at on the pyrazolyl rings. This family of compounds are sometimes called scorpionate ligands.