Synthesis and Characterization of Bis(eta2-alkyne)dihalogenomercury(II) Compounds: Crystal Structure of [NBu4]2[{Pt(C6F5)2(C=CSiMe3)2}HgBr2]·CH2Cl2
- Berenguer, J.R.
- Forniés, J.
- Lalinde, E. 1
- Martín, A.
- 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: 0300-9246
Año de publicación: 1994
Volumen: 23
Páginas: 3343-3348
Tipo: Artículo
Otras publicaciones en: Journal of the Chemical Society-Dalton Transactions
Resumen
The reactions of [NBu4]2[cis-Pt(C6F5) 2(C≡CR)2] (R = But or SiMe3) with HgX2 (X = Cl, Br or I) in a 1:1 molar ratio afforded the simple monomeric bis(η2-alkyne)mercury(II) compounds [NBu4]2[{cis-Pt(C6F5) 2(C≡CR)2}HgX2] (R = But or SiMe3; X = Cl, Br or I) in which both alkyne units are co-ordinated η2 side-on to the precursor mercury(II) halides. Similar treatment of [NBu4]2[Pt(C≡CR)4]·2H2O (R = But or SiMe3) with HgX2 in a 1:2 molar ratio gave the corresponding trinuclear 1:2 adducts. All the complexes have been characterized by analytical and spectroscopic data and, in addition, the molecular structure of [NBu4]2[{cis-Pt(C6F5) 2(C≡CSiMe3)2}HgBr 2]·CH2Cl2 has been determined by X-ray diffraction methods. The structure of the anion shows that the HgBr2 unit is attached to the dianionic fragment [Pt(C6F5)2(C≡CSiMe3) 2]2- only through η2 side-on co-ordination of the two (trimethylsilyl)ethynyl ligands. The platinum-mercury distance is 3.627(1.5) Å.