Synthesis and Structure of [Mg(dmso)<sub>6</sub>]<sup>2+</sup>[C<sub>5</sub>H<sub>5</sub>]<sup>-</sup><sub>2</sub> and\n[Mg(η<sup>1</sup>-C<sub>5</sub>H<sub>5</sub>)(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)(thf)<sub>2</sub>] (dmso = dimethylsulfoxide,\nthf = tetrahydrofuran)
Anja Jaenschke (3081543)Joachim Paap (3081546)Ulrich Behrens (2114455)
Abstract
Dicyclopentadienylmagnesium, Mg(C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>,\nreacts with dimethyl sulfoxide, dmso, to afford the ionic\ncompound [Mg(dmso)<sub>6</sub>]<sup>2+</sup>[C<sub>5</sub>H<sub>5</sub>]<sup>-</sup><sub>2</sub> with “naked” uncoordinated cyclopentadienyl rings; the reaction of Mg(C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>\nwith tetrahydrofuran, thf, leads to the neutral complex\n[Mg(C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>(thf)<sub>2</sub>] with an η<sup>1</sup>- and η<sup>5</sup>-coordinated cyclopentadienyl ring.
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