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![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
Dimeric ethyl-tin(IV)-dibromide-hydroxide-N,N-di-methyl-formamide
Christopher Jan Klecker1, Hans Reuter1
1Chemistry, Osnabrück University, Barbarastrasse 7, 49069 Osnabrück, Germany.
Abstract:
Di-μ-hydroxido-bis-[di-bromido-(di-methyl-formamide-κO)ethyl-tin(IV)], [Sn2Br4(C2H5)2(OH)2(C3H7NO)2], was prepared from ethyl-tin(IV) bromide and N,N-di-methyl-formamide (DMF) in air. The crystal structure exhibits the typical structural features of dimeric Lewis-base-stabilized monoorganotin(IV)-dihalide-hydroxides, RSnHal2(OH), i.e. two octa-hedrally coordinated Sn atoms are linked together via two bridging hydroxide groups, resulting in a centrosymmetric four-membered rhomboid-like Sn-OH ring with acute angles at the Sn atom, obtuse angles at the O atoms and two different tin-oxygen bond lengths. With the shorter bond trans to the ethyl group, this observation underlines once more the so-called trans-strengthening effect in monoorganotin(IV) com-pounds with octa-hedrally coordinated Sn atoms. Differences and similarities in the bond lengths and angles in the four-membered Sn-OH rings have been worked out for the rings in dimeric diorganotin(IV)-halide-hydroxides, [R 2SnHal(OH)]2, and hydrates of dimeric tin(IV)-trihalide-hydroxide-aqua-hydrates, [SnHal3(OH)(H2O)]2·nH2O.
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