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Preparation and Interconversion of Dimeric Di-μ-hydroxo and Tri-μ-hydroxo Complexes of Platinum(II) and Palladium(II) with 2,2'-Bipyridine and 1,10-Phenanthroline

DOI: 10.1039/DT9890000403

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 403 - 412 (1989)

Update date:2022-08-30

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Authors:

Wimmer, SmitaWimmer, Smita

Castan, PauleCastan, Paule

Wimmer, Franz L.Wimmer, Franz L.

Johnson, Neil P.Johnson, Neil P.

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Article abstract of DOI:10.1039/DT9890000403

Treatment of with AgNO3 in acetone gives the nitrato complexes .The palladium analogues were prepared from in dilute nitric acid.Dissolution of (M=Pd or Pt) in water results in the formation of the hydroxo-bridged dimers 2 plus nitric acid.Reaction of with AgNO3 in water gives 2 directly as the sole product.The dimers are resistant to substitution, although prolonged heating in aqueous nitric acid reforms .The dimers add 1 mol of OH(1-) to form the very stable trihydroxo-bridged compounds (1+) (M=Pt, deep red; M=Pd, deep yellow) where each metal is five-co-ordinate.These complexes are slowly cleaved by hydroxide to give , which was also prepared either by base hydrolysis or by reaction of with Ag2O.Addition of HX (X=NO3 or ClO4) to affords (1+), (2+) or at pH 8, 4, and 1 respectively.The complexes have been characterised by i.r., u.v., and n.m.r. (195Pt, 13C, and 1H) spectroscopy.

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Product name:(2,2'-BIPYRIDINE)DICHLOROPALLADIUM(II)

Cas No:14871-92-2

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