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Updated: Feb 22, 2026
![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Two synthetic approaches for the preparation of tin(ii) dications
Mario Schleep1, Clarissa Hettich, Daniel Kratzert
1Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstr. 21, 79104 Freiburg, Germany. krossing@uni-freiburg.de.
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.
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