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Doubly cyclometalated pyridazines: Contrasting behavior with palladium and platinum
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UNSPECIFIED (2001) Doubly cyclometalated pyridazines: Contrasting behavior with palladium and platinum. ORGANOMETALLICS, 20 (21). pp. 4418-4423. ISSN 0276-7333.
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Abstract
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 | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | ORGANOMETALLICS | ||||
Publisher: | AMER CHEMICAL SOC | ||||
ISSN: | 0276-7333 | ||||
Official Date: | 15 October 2001 | ||||
Dates: |
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Volume: | 20 | ||||
Number: | 21 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 4418-4423 | ||||
Publication Status: | Published |
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