Gemel, Christian; John, Roland; Slugovc, Christian; Mereiter, Kurt; Schmid, Roland; Kirchner, Karl 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+] ).Synthetic Route of C9H10BKN6. 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.
[Ru(η6-p-MeC6H4Pri)Cl2]2 reacted with K[quin] (quin = quinolin-8-olate) to yield the half-sandwich complex Ru(η6-p-MeC6H4Pri)(quin)Cl 1. Chloride abstraction from 1 with AgCF3SO3 affords the neutral complex Ru(η6-p-MeC6H4Pri)(quin)(κ1O-CF3SO3). The lability of the CF3SO3- ligand in 2 is apparent by the reaction with MeCN giving [Ru(η6-p-MeC6H4Pri)(quin)(MeCN)]CF3SO3 3. Refluxing RuTp(COD)Cl in the presence of K[quin] gave Ru(COD)(quin)2 4 containing no Tp ligand; 4 also was obtained in good yield by treating [Ru(COD)Cl2]n with K[quin] in boiling MeOH. Treatment of either 1 or 3 with 1 equiv of KTp gave the unusual complex Ru(η6-p-MeC6H4Pri)(quin)(κ1N-Tp) (5) featuring a κ1-coordinated Tp ligand. However, if 1 is treated with KTp in the presence of AgCF3SO3 the cationic complex [Ru(η6-p-MeC6H4Pri)(quin)(κ1-Hpz)]CF3SO3 6 was obtained containing a pyrazole ligand as a result of B-N bond cleavage. Complexes 1, 4, 5, and 6 were characterized by x-ray crystallog.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics