Synthesis and Characterization of Cationic Heteronuclear Complexes of Platinum(II) and Silver(I) Bridged by Alkynyl Ligands
- Ara, I. 2
- Berenguer, J.R. 1
- Forniés, J. 2
- Lalinde, E. 1
- Moreno, M.T. 1
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1
Universidad de La Rioja
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2
Instituto de Nanociencia y Materiales de Aragón
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ISSN: 0022-328X
Año de publicación: 1996
Volumen: 510
Número: 1-2
Páginas: 63-70
Tipo: Artículo
beta Ver similares en nube de resultadosOtras publicaciones en: Journal of Organometallic Chemistry
Resumen
The dialkynyl complexes cis-[Pt(C ≡ CR)2L2] [R = Ph, L2 = 2PPh3, 2PEt3, dppe (dppe = 1,2-bis(diphenylphosphino)ethane]; R =tBu, L2 = 2PPh3, dppe) react with silver perchlorate in a molar ratio 1:0.5 to give platinum-silver perchlorate salts of the type [Pt2Ag(C ≡ CR)4L4]ClO4) in excellent yield. The X-ray crystal structure of [Pt2Ag(C ≡ CPh)4(PPh3)4](ClO4) 1 shows that the cation is formed by two nearly orthogonal cis-[Pt(C ≡ CPh)2(PPh3)2] units connected through a silver cation which is unsymmetrically π-bonded to all four acetylene fragments. Similar reactions of cis-[Pt(C ≡ CR)2L2] with one equivalent of AgClO4 afford cationic complexes of general formula [PtAg(C ≡ CR)2L2](ClO4), which are believed to be salts, [Pt2Ag2(C ≡ CR)4L4](ClO4)2.