Potassium trispyrazolylborate, commonly abbreviated KTp, is the potassium salt with the formula :. This salt is the source of the trispyrazolylborate ligand.[1]
KTp is a white crystalline solid that is soluble in polar solvents, alcohols, and water. The synthesis of KTp involves potassium borohydride and pyrazole without a solvent.[2]
The tris(pyrazolyl)borate forms octahedral coordination compounds with the formula M[Tp]2 with first row transition metals. KTp also forms 1:1 complexes, for example it can be converted to K[TpMo(CO)<sub>3</sub>];
When K[TpMo(CO)<sub>3</sub>] is treated with butyl nitrite it yields the neutral orange complex TpMo(CO)2NO.[3]
K[TpMo(CO)<sub>3</sub>]+ BuONO→TpMo(CO)2NO+CO+KOBu