Je. Cosgriff et al., MONOMERIC TRIS(ETA(2)-PYRAZOLATO)LANTHANOID COMPLEXES WITH THE BULKY 3,5-DI(TERT-BUTYL)PYRAZOLATO LIGAND, Angewandte Chemie, International Edition in English, 32(6), 1993, pp. 874-875
The reaction of lanthanoids, Hg(C6F5)2, and tBu2pz (pz = pyrazolate) i
n THF provided the first monomeric lanthanoid complexes of type 1 with
solely chelating pz ligands. The structure on the right depicts the n
eodymium complex.