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Synthesis and structure of dipalladium complexes containing cyclooctatetraene and bicyclooctatrienyl ligands
Ist Teil von
Journal of organometallic chemistry, 2008-03, Vol.693 (5), p.894-898
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
2008
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The reaction of the reactive dipalladium(I) complex [Pd
2(CH
3CN)
6][BF
4]
2 with cyclooctatetraene (COT) (1 equiv.) yields the mono-adduct [Pd
2(μ-η
3:η
3-C
8H
8)(CH
3CN)
4][BF
4]
2. The mono-adduct reacts with COT to give the bicyclooctatrienyl complex [Pd
2(μ-η
3:η
3-C
16H
16)(CH
3CN)
4][BF
4]
2. The products were structurally characterized by X-ray crystallographic analyses.
The reaction of a substitutionally labile dipalladium(I) complex [Pd
2(CH
3CN)
6][BF
4]
2 (
1) with 1,3,5,7-cyclooctatetraene (COT) in acetonitrile afforded [Pd
2(μ-η
3:η
3-C
8H
8)(CH
3CN)
4][BF
4]
2 (
2). The reaction of
2 with COT in acetonitrile yielded [Pd
2(μ-η
3:η
3-C
16H
16)(CH
3CN)
4][BF
4]
2 (
4), where COT is dimerized via C–C bond formation. Complexes
2 and
4 were structurally characterized by X-ray diffraction analyses. In dichloromethane, COT isomerized to styrene at room temperature in the presence of catalytic amount of
1,
2, or
4.