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2. The ligand is the dihydrogen molecule H2
A particularly interesting case is the attachment of the hydrogen molecule H 2 as such. This situation was discovered by Kubas.
Let's start by activating tungsten carbonyl through the action of cycloheptatriene, which replaces three molecules of CO :
The tungsten environment remains at 18 electrons. The action of a phosphine whose R groups are very bulky, such as the isopropyl...
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The ligand is the dihydrogen molecule H2