Doubly cyclometalated pyridazines: Contrasting behavior with palladium and platinum
UNSPECIFIED. (2001) Doubly cyclometalated pyridazines: Contrasting behavior with palladium and platinum. ORGANOMETALLICS, 20 (21). pp. 4418-4423. ISSN 0276-7333Full text not available from this repository.
The cyclometalation of 3,6-diphenylpyridazines with palladium and platinum has been studied. When palladium acetate is used as the metal source, two sequential cyclometalations are observed, with the first cyclometalation deactivating the system toward a second cyclometalation. Both monocyclopalladated and dicyclopalladated species have been isolated and characterized as their acetylacetonate derivatives. When potassium tetrachloroplatinate is used as the metal source, only double cycloplatination is observed: the first cycloplatination activates the system toward a second cycloplatination through a combination of nitrogen coordination and a chloride bridging two platinums. A doubly cycloplatinated compound has been isolated as its triphenylphosphine derivative, which has been fully characterized: the single-crystal X-ray structure shows that the two platinums are bridged by a chloride.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry|
|Journal or Publication Title:||ORGANOMETALLICS|
|Publisher:||AMER CHEMICAL SOC|
|Official Date:||15 October 2001|
|Number of Pages:||6|
|Page Range:||pp. 4418-4423|
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