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A new polymeric alkyl/alkoxide magnesium–sodium inverse crown complex

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Poly[bis(μ3‐trimethylsilylmethanolato)tetrakis(μ2‐trimethylsilylmethyl)dimagnesiumdisodium], [Na2Mg2(C4H11OSi)2(C4H11Si)4] n , was obtained from the controlled exposure to oxygen of the unsolvated sodium magnesate [NaMg(CH2SiMe)3] n . Exhibiting a centrosymmetric (Z′ = ) dimeric core of a heterobimetallic eight‐membered cationic ring, hosting two alkoxide ligands at its core, the title compound forms a two‐dimensional coordination polymer in the crystallographic bc plane through Na...Me contacts. These contacts from Na to formally uncharged groups are only 0.06 Å longer than those between Na and the formally charged CH2 R anions. The coordination polymers stack along the a direction to give a layer structure with alternating hydrophobic and hydrophilic regions.
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Document Type: Research Article

Affiliations: Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland

Publication date: July 15, 2011

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