Abstract
The species ((C6F5)2BCH2SPh)2 reacts with PhC≡CLi to give the thioether-alkynylborate (C6F5)2BCH2SPh(C≡CPh)Li(THF)2 (1). Subsequent reaction with (Ph3P)3RuHCl, (Ph3P)3RhCl, and [(COD)Rh(μ-Cl)]2 gives (C6F5)2BCH2SPh(C≡CPh)RuH(PPh3)2 (2), (C6F5)2BCH2SPh(C≡CPh)Rh(PPh3)2 (4), and (C6F5)2BCH2SPh(C≡CPh)Rh(COD) (5), respectively, demonstrating a bidentate binding mode via the alkynyl and thioether donors of the borate. Subsequent reactions of 2 and 4 with H2 gave (C6F5)2BCH2SPh(CH2CH2Ph)RuH(PPh3)2 (3) and ((C6F5)2BCH2SPh(CHCHPh))Rh(PPh3)2 (6). In the former case, the borate remains bound to the metal via a π-interaction with the thioether-arene ring, while in the latter case, S and alkene binding is observed.
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