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Article: En route to diplatinum polyynediyl complexes trans,trans-(Ar)[([R.sub.3]P).sub.2]Pt[(C[equivalent to]C).sub.n]Pt[([PR.sub.3]).sub.2](Ar): untold tales, including end-group strategies *.(Report)
- Article from:
- Pure and Applied Chemistry
- Article date:
- March 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 International Union of Pure and Applied Chemistry. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract: Reactions of [{([C.sub.6][F.sub.5])Pt[S[(C[H.sub.2]C[H.sub.2]-).sub.2]]([mu]-Cl)}.sub.2] and [R.sub.3]P yield the bis(phosphine) species trans-([C.sub.6][F.sub.5])[([R.sub.3]P).sub.2]PtCl [R = Et (Pt'Cl), Ph, [(p-C[F.sub.3][C.sub.6][H.sub.4]).sub.3]P; 88-81%]. Additions of Pt'Cl and H[(C[equivalent to]C).sub.n]H (n = 1, 2; H[NEt.sub.2], 20 mol% CuI) give Pt'[C.sub.2]H (37%, plus Pt'I, 16%) and Pt'[C.sub.4]H (88%). Homocoupling of Pt'[C.sub.4]H under Hay conditions (O2, CuCl, TMEDA, acetone) gives Pt'[C.sub.8]Pt' (85%), but Pt'[C.sub.2]H affords only traces of Pt'[C.sub.4]Pt'. However, condensation of Pt'[C.sub.4]H and Pt'Cl (H[NEt.sub.2], 20 mol% CuI) yields ...