Acta Cryst. (2007). E63, m2188  [ doi:10.1107/S1600536807034575 ]

An unsolvated erbium organyl: (2,4,6,2'',4'',6''-hexamethyl-1,1':3';1''-terphenyl-2'-yl)bis(methylcyclopentadienyl)erbium(III)

M. Niemeyer

Abstract: The title compound, [Er(Dmp)(C₅H₄Me)₂] (Dmp = 2,6-Mes₂C₆H₃, with Mes = 2,4,6-Me₃C₆H₂) or [Er(C₆H₇)₂(C₂₄H₂₅)], was obtained by the reaction of LiDmp with Er(C₅H₄Me)₃. The Er atom is ⁵-coordinated by two methylcyclopentadienyl ligands (average Ercentroid distance = 2.341 Å) and ¹-coordinated by the ipso-C atom of the aryl substituent [Er-C = 2.434 (4) Å]. An additional -arene contact with one of the Mes groups [ErC = 3.077 (4) Å] gives rise to the pyramidalization of the metal-atom environment.

Online 20 July 2007

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