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 Synthesis, characterization and reactivity of lanthanide(II) poly(pyrazol-1-yl)borates (Ln = Sm, Eu and Yb); fluorescence studies of [EuL2(THF)2] [L = B(pz)4 HB(pz)3]; x-ray crystal structures of [Eu{B(pz)4}2(THF)2] and [Yb{B(pz)4}3].C2H5OH, the main research direction is crystal structure europium ytterbium hydrotrispyrazolylborate tetrapyrazolylborate; structure europium ytterbium hydrotrispyrazolylborate tetrapyrazolylborate; rare earth hydrotrispyrazolylborate tetrapyrazolylborate; pyrazolylborate rare earth preparation fluxionality; fluorescence europium hydrotrispyrazolylborate tetrapyrazolylborate; fluxionality rare earth hydrotrispyrazolylborate tetrapyrazolylborate.Synthetic Route of C9H10BKN6.
The reaction [LnI2(THF)x] (Ln = Sm, Eu, Yb) with 2 equiv of K[B(pz)4] (pz = pyrazolyl) in THF gave [Ln{B(pz)4}2(THF)2] complexes. The mol. structure of [Eu{B(pz)4}2(THF)2] was determined by single-crystal x-ray diffraction anal. The [Sm{B(pz)4}2(THF)2] and [Yb{B(pz)4}2(THF)2] complexes are fluxional in solution, as indicated by the equivalence of the pyrazolyl rings in the 1H NMR spectra at room temperature A static spectrum could be obtained for the Sm compound at -68° with a pattern that is in accordance with the geometry found for the Eu complex, in the solid state. [Ln{HB(pz)3}2(THF)2] (Ln = Sm, Eu, Yb) were prepared by the procedure used to synthesize the [Ln{B(pz)4}2(THF)2] complexes. The THF mols. can be replaced by 1,2-dimethoxyethane yielding [Ln{HB(pz)3}2(DME)] (Ln = Sm, Yb). [Sm{B(pz)4}2(THF)2] and [Yb{B(pz)4}2(THF)2] react readily with alkyl halides, alcs. or alkynes to yield LnIII complexes that disproportionate to the [Ln{B(pz)4}3] complexes. The crystal structure of [Yb{B(pz)4}3].EtOH obtained in the reaction of [Yb{B(pz)4}2(THF)2] with EtOH was determined by x-ray diffraction anal. Fluorescence studies on the Eu compounds are also reported.
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