Synthesis and reactivity of rhodium fluoro complexes |
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| Authors: | Daniel Noveski Sonja Krückemeier |
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| Institution: | Fakultät für Chemie, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany |
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| Abstract: | RhH(CO)(PPh3)2] (1) reacts with Et3N·3HF to give the fluoro compound RhF(CO)(PPh3)2] (2). In a comparable reaction RhF(PEt3)3] (5) has been obtained from RhH(PEt3)3] (3) or RhH(PEt3)4] (4) with substoichiometric amounts of Et3N·3HF in THF. If the latter reaction is carried out in benzene, the complexes 5, cis-mer-Rh(H)2F(PEt3)3] (6) and cis-fac-Rh(H)2F(PEt3)3] (7) are obtained. Treatment of 5 with HCl in ether effects the generation of RhCl(PEt3)3] (8) and the bifluoride compound Rh(FHF)(PEt3)3] (9), which can be converted into 5 in the presence of Et3N and Cs2CO3. Treatment of 5 with HSiR2Ph (R=Ph, Me) leads to the formation of 3 and the rhodium(III) silyl complexes fac-Rh(H)2(SiR2Ph)(PEt3)3] (10: R=Ph, 11: R=Me). |
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| Keywords: | Rhodium Fluoro complexes Bifluoride compounds Silyl complexes |
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