Verbindungen Der Schweren Übergangsmetalle Mit Metall--Metall-Bindungen. Über Die Struktur Organischer Metallkomplexe

In numerous organometallic complexes n-electrons are highly or even completely delocalized. In many cases chemical methods do not distinguish between a rapid equilibrium Involving two asymmetric structures or a single symmetrie structure. This problem can be solved by vibrational spectroscopy of isotopically labeled molecules. In metal acetylacetonates delocalisation between single and double bonds is complete.