Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Inorganic Syntheses called Compounds of general interest. Chloro(hydrotris(pyrazol-1-yl)borato)bis(triphenylphosphine)ruthenium(II) {RuCl[κ3-HB(pz)3](PPh3)2} (pz = pyrazol-1-yl), Author is Hill, Anthony F.; Wilton-Ely, James D. E. T.; Rauchfuss, Thomas B.; Schwartz, Daniel E., which mentions a compound: 18583-60-3, SMILESS is [BH-](N1N=CC=C1)(N2N=CC=C2)N3N=CC=C3.[K+], Molecular C9H10BKN6, Safety of Potassiumtris(1-pyrazolyl)borohydride.
RuCl[κ3-HB(pz)3](PPh3)2 complex was synthesized on a large scale (10 g) and was characterized. The procedure is based on the reaction of dichlorotris(triphenylphosphine)ruthenium(II) with hydrotris(pyrazol-1-yl)borate K salt.
Although many compounds look similar to this compound(18583-60-3)Safety of Potassiumtris(1-pyrazolyl)borohydride, numerous studies have shown that this compound(SMILES:[BH-](N1N=CC=C1)(N2N=CC=C2)N3N=CC=C3.[K+]), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics