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Organoamido‐ and Aryloxo‐Lanthanoids, 17 Novel Low‐Coordinate Lanthanoid (II) and ‐(III) Aryloxide Complexes ‐ the X‐ray Structures of Bis (2,6‐diphenylphenolato) tris(tetrahydrofuran)‐ytterbium (II), Bis(1,2‐dimethoxyethane)bis(2,6‐diphenylphenolato)ytterbium(II),‐neodymium(III)
Author(s) -
Deacon Glen B.,
Feng Tiecheng,
Junk Peter C.,
Skelton Brain W.,
White Allan H.
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300707
Subject(s) - dimethoxyethane , chemistry , tetrahydrofuran , lanthanide , ligand (biochemistry) , crystallography , ytterbium , stereochemistry , medicinal chemistry , organic chemistry , ion , biochemistry , physics , receptor , optoelectronics , electrode , doping , solvent , electrolyte
Reduction of [Yb(Odpp) 3 (THF) 2 (HOdpp = 2,6‐diphenylphenol; THF = tetrahydrofuran) with ytterbium powder and mercury metal yields [Yb(Odpp) 2 (THF) 3 ] ( 1 ) which on crystallization from DME gives [Yb(Odpp) 2 (DME) 2 ] ( 2 ) (DME = 1,2‐dimethoxyethane). Crystallization of the reactant [Yb(Odpp) 3 (THF) 2 ] from DME yields [Yb(Odpp) 3 (DME)]. (DME) 0,5 ( 3 ) and of [Nd(Odpp) 3 (THF) 2 ] from DME/THF the analogous [Nd(Odpp) 3 (DME)] . (THF) ( 4 ). The X‐ray crystal structure of 1 reveals distorted trigonal bipyramidal five‐coordinate ytterbium with axial Odpp ligands [O‐Yb‐O 164.6(3)˚], and unsymmetrically distributed equatorial THF ligands [O‐Yb‐O 137.5(3), 138.8(3), 83.7(4)°] owing to two close H(Ph) ... Yb approaches (3.1‐3.2 Å). In 2, there is trigonal prismatic six‐coordination with an Odpp ligand on each triangular face and DME ligands bridging the triangular faces. Both 3 and 4 have distorted square planar five‐coordination for the lanthanoid metals with an apical Odpp ligand and cisoid Odpp ligands and a chelating DME in the square plane.