[1] KTp* is a white crystalline solid that is soluble in polar solvents, including water and several alcohols.

The rate of B-N bond formation becomes more difficult with each successive 3,5-dimethylpyrazolyl due to the increase in steric hindrance around the boron:[2] The required dimethylpyrazole is obtained by condensation of hydrazine and acetylacetone.

The active binding sites in Tp*− are the three nitrogen centers that are not bonded to the boron.

Although more weakly binding than cyclopentadienyl ligands, Tp*− is still a tightly coordinating.

The benefit of Tp*− over its sister compound Tp− is the addition of the methyl groups on the pyrazolyl rings, which increases the steric hindrance of the ligand enough that only one Tp*− can bind to a metal.