ISSN:
0044-2313
Keywords:
Palladium
;
Bidentate Schiff base
;
Cyclometallation
;
Oxidative Addition
;
tertiary phosphine
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Neue Dinukleare Cyclometallierte Komplexe von Palladium(II) durch oxidative Addition mit N,N-(2,5-dichloro)terephthalylidenbis(cyclohexylamin)Die oxidative Addition der zweizähnigen Schiff-Base 1,4-(CyN=CH)2-2,5-CI2C6H2 an Tris(dibenzylidenaceton)dipalladium(0) ergab den dicyclopalladierten Komplex [(Cl)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(Cl)]n (1). Die Umsetzung von 1 mit LiBr ergab das analoge Bromoderivat [(Br)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(Br)]n (2). Reaktionen von 1 oder 2 mit tertiären Phosphinen in den Molverhältnissen 1:2 bzw. 1:4 führten zu den entsprechen den dinuklearen, cyclometallierten Komplexen [(L)(X)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(X)(L)] (3-9) und den nicht-cyclometallierten Komplexen [(L)2(X)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(X)(L)2] (10-14) (X = Cl, Br; L = PPh3, PEtPh2, PEt2Ph, PMePh2). Die Behandlung von 1 bzw. 2 mit Thalliumacetylacetonat führte zu dem dinuklearen, cyclometallierten Komplex [(MeCOCHCOMe)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(MeCOCHCOMe)] (15).
Notes:
The oxidative addition of the bidentate Schiff base 1,4-(CyN=CH)2-2,5-Cl2C6H2 to tris(dibenzylideneacetone) dipalladium(0) gave the dicyclopalladated complex [(Cl)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(Cl)]n (1). Treatment of 1 with LiBr gave the analogous bromo derivative [(Br)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(Br)]n (2). Reaction of 1 or of 2 with tertiary phosphines in 1:2 or 1:4 molar ratios gave the dinuclear cyclometallated [(L)(X)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(X)(L)] (3-9), and non-cyclometallated complexes [(L)2(X)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(X)(L)2] (10-14) (X = Cl, Br; L = PPh3, PEtPh2, PEt2Ph, PMePh2, as appropriate), respectively, Treatment of 1 or of 2 with thallium acetylacetonate gave the dinuclear cyclometallated complex [(MeCOCHCOMe)PdN(Cy)=C(H)C6H2C(H)=N(Cy)Pd(MeCOCHCOMe)] (15).
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.199762301133
