Interaction of tin chlorides with iron, chromium and vanadium chlorides in tetrahydrofuran. Crystal structures of [Fe2(µ-Cl)3(thf)6][SnCl5(thf)], [Sn2(µ-OH)2Cl6(thf)2]·2thf and trans-[CrCl2(thf)4][SnCl5(thf)]
- 1 January 1991
- journal article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 9,p. 2429-2434
- https://doi.org/10.1039/dt9910002429
Abstract
The reaction of FeCl3 with SnCl2 in tetrahydrofuran (thf) yields the salt [Fe2(µ-Cl)3(thf)6][SnCl5(thf)]1. In the [Fe2(µ-Cl)3(thf)6]+ cation, two six-co-ordinate Fe2+ ions separated by an Fe ⋯ Fe distance of 3.086(2)Å are bonded through three bridging Cl atoms. Compound 1 undergoes partial decomposition under reflux in thf to give [Fe4(µ3-Cl)2(µ-Cl)4Cl2(thf)6]2 and [SnCl4(thf)2]. The compound [Sn2(µ-OH)2Cl6(thf)2]·2thf 3 is formed under the influence of moisture during the crystallization of [SnCl4(thf)2]. It is a dimeric complex of SnIV in which each tin atom is surrounded octahedrally by three chlorine atom, one thf molecule and two bridging hydroxide groups. An additional two thf molecules are hydrogen-bonded to the oxygen atoms of the hydroxide groups. By contrast with FeCl3, the reactions of [SnCl4(thf)2] with [MCl3(thf)3](M = V or Cr) in thf give tin(IV) salts of the type trans-[MCl2(thf)4][SnCl5(thf)].Keywords
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