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- Title
Synthesis and Reactivity of Donor‐Stabilized Bis(pentafluoroethyl)stannylene [Sn(C<sub>2</sub>F<sub>5</sub>)<sub>2</sub>(D)<sub><italic>n</italic></sub>] (D=THF, DMAP, PMe<sub>3</sub>, [Sn(C<sub>2</sub>F<sub>5</sub>)<sub>3</sub>]<sup>−</sup>).
- Authors
Klösener, Johannes; Wiesemann, Markus; Niemann, Mark; Neumann, Beate; Stammler, Hans‐Georg; Hoge, Berthold
- Abstract
Abstract: In this contribution we report on the synthesis of bis(pentafluoroethyl)stannane, H2Sn(C2F5)2. In the reaction with donor molecules a ready elimination of hydrogen and the formation of the corresponding donor‐stabilized monomeric bis(pentafluoroethyl)stannylene, Sn(C2F5)2, becomes apparent. With dependence on the Lewis basicity and steric demand of the donor, varying coordination numbers are realized. Whereas the reaction with nitrogen bases like 4‐(dimethylamino)pyridine (DMAP) leads to the complexation of two donor molecules, [Sn(C2F5)2(dmap)2], treatment with PMe3 or [Sn(C2F5)3]− furnished the corresponding neutral or anionic monoadducts, [Sn(C2F5)2(D)] (D=PMe3, [Sn(C2F5)3]−). In contrast, the utilization of sterically demanding donors, such as <italic>i</italic>Pr2O, as well as the thermal treatment of ether complexes, [Sn(C2F5)2(D)<italic>n</italic>] (D=Et2O, THF), leads to the formation of oligomeric and cyclic stannylene moieties [Sn(C2F5)2]<italic>n</italic>. The reactivity of H2Sn(C2F5)2 and the donor‐stabilized stannylenes was proven by hydrostannylation and complexation reactions with tetracarbonylnickel and bimetallic compounds. In the latter case, a donor‐dependent stannylene or distannylene insertion into the metal–metal bond was observed.
- Subjects
CHEMICAL reactions; ABDERHALDEN reaction; ACIDOLYSIS; CRYSTAL structure; LEWIS acids
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 17, p4412
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201705770