Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Potassiumtris(1-pyrazolyl)borohydride, is researched, Molecular C9H10BKN6, CAS is 18583-60-3, about Lead encapsulation by a golden clamp through multiple electrostatic, metallophilic, hydrogen bonding and weak interactions.Safety of Potassiumtris(1-pyrazolyl)borohydride.
The structure of the complex [{Pb(HBpz3)}{Au3(o-C6BrF4)3(HBpz3)}] consists of a host-guest heterometallic system built up through a plethora of interactions including electrostatic, metallophilic, H-bonding, Au···Br or weak C···C or Pb···Br contacts. Computational studies show that the dispersive interactions are responsible for the attraction of the Pb(II) cationic moiety within the basket-like trinuclear Au(I) fragment, whereas the ionic component of the interaction placed at the rings produces a mol. clamp.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics