
%0 Journal Article
%A Deacon, GB 
%A Nickel, S 
%A Mackinnon, P 
%A Tiekink, ERT 
%T Organoamido- and Aryloxo-Lanthanoids. II. Preparation of Tris(2,6-diphenylphenoxo)-lanthanoid(III) Complexes and the X-Ray Structures of Low-Coordinate [Yb(O-2,6-Ph<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)<sub>3</sub>] Containing an Intramolecular Chelate Yb&#8230;&#960;-Arene Interaction, and [Yb(O-2,6-Ph<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)<sub>3</sub>(thf)<sub>2</sub>].thf (thf = Tetrahydrofuran)
%J Australian Journal of Chemistry
%D 1990/07/01
%V 43
%N 7
%P 1245-1257
%K 
%R https://doi.org/10.1071/CH9901245
%U https://www.publish.csiro.au/paper/CH9901245 
%X Bulky monomeric lanthanoid(III) aryl oxides Ln(Odpp)3(Odpp = 2,6- diphenylphenoxide; Ln = Nd, Sm, Er, Yb or Lu) have been prepared by reaction between the lanthanoid metal, Hg(C6F5)2, and HOdpp in tetrahydrofuran (thf), and Yb(Odpp)3 has also been obtained from an analogous reaction of (PhCC)2Hg. Cleavage of Ln(&#951;5-C5H5)3 (Ln = Nd or Yb) with HOdpp also yields Ln(Opdd)3. The aryl oxides have been isolated as [Ln(Odpp)3(thf)2] (Ln = Nd, Sm or Yb) or as the homoleptic complexes Ln(Odpp)3 (Ln = Nd, Er, Yb or Lu). The X-ray crystal structure of [Yb(Odpp)3(thf)2].thf [crystals monoclinic, space group P21/n, a 11.009(4), b 32.134 (7), c 15.498(6)&#506;, &#946; 96.72(3)&#176;, Z 4; 2785 data refined to R 0.039] shows the complex to have distorted square pyramidal stereochemistry with apical and transoid basal Odpp ligands, (Yb-Odpp) 2.078(9)&#506;, and transoid basal thf ligands, {Yb-O(thf)} 2.305(8)&#506;. Similarly, Yb(Odpp)3 [crystals triclinic, space group P&#299;, a 15.934(2), b 13.563(1), c 10.968(2)&#506;, &#945; 116.71(1), &#946; 92.90(2), &#947; 103.38(1)&#176;, Z 2; 6236 data refined to R 0.031] was shown to have a trigonal pyramidal arrangement of oxygen donor atoms [{Yb-O} 2.065(4) &#506;;{O-Yb-O} 117.5(1)&#176;], a novel intramolecular chelate Yb&#8230;&#960;-arene interaction, {Yb...C} 2.978(6)&#506;, and an agostic Yb&#8230;CH interaction. 
