publication . Article . 2008

Analogy of the Coordination Chemistry of Alkaline Earth Metal and Lanthanide Ln²⁺ Ions: The Isostructural Zoo of Mixed Metal Cages [IM(OtBu)₄{Li(thf)}₄(OH)] (M=Ca, Sr, Ba, Eu), [MM′₆(OPh)₈(thf)₆] (M=Ca, Sr, Ba, Sm, Eu, M′=Li, Na), and their Derivatives with 1,2-Dimethoxyethane

Maudez, William; Meuwly, Markus; Fromm, Katharina M.;
Open Access English
  • Published: 06 Mar 2008
  • Country: Switzerland
Abstract
As previously shown, alkali and alkaline earth metal iodides in nonaqueous, aprotic solvents behave like transition metal halides, forming <i>cis</i>- and <i>trans</i>-dihalides with various neutral O-donor ligands. These compounds can be used as precursors for the synthesis of new mixed alkali/alkaline earth metal aggregates. We show here that Ln²⁺ ions form isostructural cluster compounds. Thus, with LiO<i>t</i>Bu, 50 % of the initial iodide can be replaced in MI₂, M=Ca, Sr, Ba, Eu, to generate the mixed-metal alkoxide aggregates [IM(O<i>t</i>Bu)₄{Li(thf)}₄(OH)], for which the M***Missing image substitution***OH contacts were investigated by theoretical method...
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