Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 18583-60-3, is researched, SMILESS is [BH-](N1N=CC=C1)(N2N=CC=C2)N3N=CC=C3.[K+], Molecular C9H10BKN6Journal, Inorganica Chimica Acta called Heteroleptic poly(pyrazol-1-yl)borate derivatives of the lanthanides. The syntheses of picolinate-N-oxide complexes and the x-ray crystal structure of [Tb{HB(C3H3N2)3}2(ONC5H4CO2-2)], Author is Lawrence, Royston G.; Jones, Christopher J.; Kresinski, Roman A., the main research direction is crystal structure terbium hydridotrispyrazolylborato picolinate oxide complex; terbium hydridotrispyrazolylborato picolinate oxide complex preparation structure luminescence; rare earth hydridotrispyrazolylborate picolinate oxide complex preparation structure luminescence; borate hydridotrispyrazolyl rare earth picolinate oxide preparation structure luminescence; pyrazolylborate hydridotris rare earth picolinate oxide preparation structure luminescence.SDS of cas: 18583-60-3.
[Ln(Tp)2(pnx)] {Ln = Y, Eu, Gd, Tb, Er, Yb or Lu; Tp- = hydrotris(pyrazol-1-yl)borate, pnxH = picolinic acid N-oxide} were synthesized and characterized. The complexes which contain Eu or Tb are emissive upon ligand excitation and substantially larger intensities of emission are associated with excitation of the pnx- ligand than with excitation of the Tp- ligand. The solid state structure (monoclinic, space group P21/a, R1 = 4.21%) of [Tb(Tp)2(pnx)] shows the complex to be eight-coordinate and monomeric, containing a pnx- co-ligand chelating via one N-oxide oxygen and one carboxylate oxygen. The geometry around the Tb3+ ion is distorted square antiprismatic with a steric angle sum of 0.79.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics