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Issue 79, 2017
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Two synthetic approaches for the preparation of tin(II) dications

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Abstract

Examples of tin dications without closer contacts to the anion are rare, as are straightforward routes to weakly coordinated tin(II) dication salts. Here we report on the synthesis of [Sn(MeCN)6][Al(ORF)4]2 (RF = C(CF3)3) via NO+-oxidation of tin metal. Subsequently, [Sn(MeCN)6][Al(ORF)4]2 was used to prepare the mixed coordinated [Sn(pyr)2(MeCN)4][Al(ORF)4]2 and [Sn(PPh3)2-(MeCN)5][Al(ORF)4]2·MeCN. Additionally, [Sn(dmap)4][Al(ORF)4]2 was prepared via a reaction of dmap with [SnCp][Al(ORF)4]. The generality of the formation of tin(II) dications by reacting [SnCp]+ and L to give [SnLx]2+ and SnCp2 was investigated using DFT calculations. Extensions to [ECp*]+ cations (E = Si, Ge, Sn, and Pb) are also suggested to be useful for the preparation of E(II) dications.

Graphical abstract: Two synthetic approaches for the preparation of tin(ii) dications

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Publication details

The article was received on 08 Aug 2017, accepted on 11 Sep 2017 and first published on 12 Sep 2017


Article type: Communication
DOI: 10.1039/C7CC06201J
Citation: Chem. Commun., 2017,53, 10914-10917
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    Two synthetic approaches for the preparation of tin(II) dications

    M. Schleep, C. Hettich, D. Kratzert, H. Scherer and I. Krossing, Chem. Commun., 2017, 53, 10914
    DOI: 10.1039/C7CC06201J

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