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Cyclopalladated hydrazones complexed to pyridinyl ligands (Articolo in rivista)

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Cyclopalladated hydrazones complexed to pyridinyl ligands (Articolo in rivista) (literal)

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Aiello, I; Ghedini, M; La Deda, M; Martino, T (2007)
Cyclopalladated hydrazones complexed to pyridinyl ligands
in Inorganic chemistry communications
(literal)

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Univ Calabria, Ctr Eccellenza CEMIFCAL, Dipartimento Chim, LaSCaMM,CR INSTM,Unita INSTM Calabria & LiCryL, I-87036 Arcavacata Di Rende, Italy (literal)

Titolo

Abstract

2-Benzoylpyridine and 2-acetylpyridine N-methyl-N-phenylhydrazones (HL1 and HL2) in cyclopalladation reactions with Pd-3(OAc)(6) behave as N(py)N(im)C tridentate ligands and form the neutral mononuclear complexes [Pd(k(3)-N,N,C-L-1,L-2)(k(1)-OAc)] (1 and 2). The labile OAc ligand can be replaced by pyridine (py) and, in the presence of NH4PF6, a compound of the general formula [Pd(k(3)-N,N,C-L-1,L-2)(py)]PF6 (3 and 4) can be obtained. Reacting 1 or 2 with the poly(4-vinylpyridine) polymer (PVP, (M) over bar (w) = 160000) adducts of the general formula x[Pd(k(3)-N,N,C-L-1,L-2)(PF6)]center dot y[PVP] gives (5a-c and 6a-c, a-c: x/y = 80/20, 50150, 25/75 w/w) containing the laterally appended cyclopalladated 'Pd(k(3)-N,N,C-L-1,L-2)' fragments. These metallorganic polymers show high glass transition temperatures, high thermal stability and good solubility, and are optimal for obtaining transparent thin films by the spin coating method. (c) 2007 Elsevier B.V. All rights reserved. (literal)

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