Jalon, Felix A.; Otero, Antonio; Rodriguez, Ana published an article about the compound: Potassiumtris(1-pyrazolyl)borohydride( cas:18583-60-3,SMILESS:[BH-](N1N=CC=C1)(N2N=CC=C2)N3N=CC=C3.[K+] ).Quality Control of Potassiumtris(1-pyrazolyl)borohydride. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:18583-60-3) through the article.
The reaction of polymeric [{RuCl2(cod)}n] (cod = cycloocta-1,5-diene) with K tris(pyrazol-1-yl)borate, KHB(pz)3, in refluxing THF leads to [Ru{HB(pz)3}Cl(cod)] (1), and the pyrazole-containing [RuCl2(Hpz)2(cod)] (2) which arises from thermolysis of pyrazolylborate. Reaction of [RuCl2(tht)4] (tht = tetrahydrothiophene) with the same salt at room temperature affords a mixture of [Ru{HB(pz)3}Cl(tht)2] (3) and [Ru{HB(pz)3}2(tht)2] (4), which were efficiently isolated. The product ratio of this process greatly depends on the reaction conditions. [Ru{HB(pz)3}2] (5) forms by transformation of 4 in CHCl3 solution, a reaction which is slow but complete in one week. [RuClH(bpzm)(cod)] [bpzm = bis(pyrazol-1-yl)methane] reacts with KHB(pz)3 to give [Ru{HB(pz)3}H(cod)] as the only Ru product. Nuclear Overhauser enhancement (NOE) measurements were used as a valuable method for the assignment of the H3 and H5 resonances of the pyrazolyl groups. Heteronuclear 1H-13C correlation (COSY) experiments were recorded to determine the assignment of the C3 and C5 carbons of the pz groups.
In addition to the literature in the link below, there is a lot of literature about this compound(Potassiumtris(1-pyrazolyl)borohydride)Quality Control of Potassiumtris(1-pyrazolyl)borohydride, illustrating the importance and wide applicability of this compound(18583-60-3).
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics