The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Potassiumtris(1-pyrazolyl)borohydride, is researched, Molecular C9H10BKN6, CAS is 18583-60-3, about Carbon-Hydrogen Bond Activation in Hydridotris(pyrazolyl)borate Complexes of Iridium, the main research direction is crystal structure pyrazolyl borate iridium complex; mol structure pyrazolyl borate iridium complex; carbon hydrogen bond activation pyrazolyl borate iridium complex; pyrazolyl borate iridium complex preparation structure.Product Details of 18583-60-3.
The CH2Cl2 solutions of the tris(1-pyrazolyl)borate (Tp) complexes TpIr(PPh3)(C2H4) or TpIr(C2H4)2 react with excess PPh3 via activation of a pyrazole C-H bond to form equilibrium mixtures of TpIr(PPh3)(C2H4), (N,C5,N-Tp-H)Ir(PPh3)2H (1), and free ethylene upon standing at room temperature Complete conversion to 1 was accomplished by removing the displaced ethylene. The hydride complex 1 was purified by protonation at the unbound N of the pyrazole ring to afford cationic complex [(N,C5,N-Tp)HIr(PPh3)2]BF4 (2). Deprotonation of 2 affords complex 1 in good yield and purity. The structures of 1 and 2 were elucidated using 1H and 13C NMR spectroscopy. The structures of TpIr(C2H4)2 and complex 2 (CH3CN solvate) were verified by x-ray crystallog. Reaction of isolated complex 1 with ethylene regenerates TpIr(PPh3)(C2H4) in a reaction that is strongly inhibited by added PPh3.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics