119127-33-2Relevant academic research and scientific papers
Organoamido- and Aryloxo-lanthanoids. I The Preparation and Characterization of Some Lanthanoid(II) Organoamides, and the X-Ray Crystal Structure of cis-Bis(carbazol-9-yl)tetrakis(tetrahydrofuran)europium(II)
Deacon, Glen B.,Forsyth, Craig M.,Gatehouse, Bryan M.,White, Paul A.
, p. 795 - 806 (2007/10/02)
Reaction of carbazole (Hcbz) or 2-phenylindole (Hpin) with bis(pentafluorophenyl)-ytterbium or -europium in tetrahydrofuran (thf) gives the complexes M(cbz)2(thf)4 (M = Yb or Eu) or Yb(pin)2(thf)4.From treatment of lanthanoid metals with bis(pentafluorophenyl)mercury and 2-phenylindole, 2,3,4,5-tetraphenylpyrrole (Htpp) or carbazole, the complexes M(pin)2(thf)4 (M = Yb, Eu or Sm), M(tpp)2(thf)3 (M = Yb or Sm) and Yb(cbz)2(thf)4 have been isolated.Desolvation of M(pin)2(thf)4 under vacuum yields Yb(pin)2(thf) and Sm(pin)2(thf)3.Oxidation of Sm(pin)2(thf)4 with Hg(C6H5)2 and 2-phenylindole gives Sm(pin)3(thf).The crystal structure of Eu(cbz)2(thf)4 shows the complex to be monomeric with distorted octahedral stereochemistry for europium, cis-carbazol-9-yl ligands ( 2.559 Angstroem), and longer Eu-O bonds (av. 2.600 Angstroem) trans to N than mutually trans ( 2.553 Angstroem).Other complexes M(NR2)2(thf)n (NR2 = pin, cbz or tpp) are considered to be monomeric with five (n = 3) or six (n = 4) coordination.
