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Crystal Structure of a Binuclear Mixed-Valence Ytterbium Complex Containing a 2-anthracene-substituted Phenoxide Ligand

Crystal Structure of a Binuclear Mixed-Valence Ytterbium Complex Containing a 2-anthracene-substituted Phenoxide Ligand

David J Berg, Brendan Twamley

Acta Crystallogr E Crystallogr Commun. 2019 Aug 23;75(Pt 9):1367-1371.

PMID: 31523468

Abstract:

Reaction of 2-(anthracen-9-yl)phenol (HOPhAn, 1) with divalent Yb[N(SiMe3)2]2·2THF in THF-toluene mixtures affords the mixed-valence YbII-YbIII dimer {[2-(anthracen-9-yl)phenolato-κO]bis-(tetra-hydro-furan)-ytterbium(III)}-tris-[μ-2-(anthracen-9-yl)phenolato]-κ4 O:O;κO:1,2-η,κO-{[2-(anthracen-9-yl)phenolato-κO]ytterbium(II)} toluene tris-olvate, [Yb2(C20H13O)5(C4H8O)2]·3C7H7 or [YbIII(THF)2(OPhAn)](μ-OPhAn)3[YbII(OPhAn)]·3C7H7 (2), as the major product. It crystallized as a toluene tris-olvate. The Yb-O bond lengths in the crystal structure of this dimer clearly identify the YbII and YbIII centres. Inter-estingly, the formally four-coordinate YbII centre shows a close contact with one anthracene C-C bond of a bridging OPhAn ligand, bringing the formal coordination number to five.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1314370	Ytterbium(III) oxide		1314-37-0	Price

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