A convenient route to prepare mono- and dinuclear 2-benzoylpyridine palladacycles with imidate ligands

作者：Luis Serrano J; Perez Jose; Garcia Luis; Perez Eduardo; Sanchez Gregorio; Kapdi Anant

来源：Journal of Organometallic Chemistry, 2016, 814: 57-62.

DOI：10.1016/j.jorganchem.2016.03.032

• Palladacycles
• Imidates
• 2-Benzoylpyridine
• 4,5-Dichlorophthalimidate
• X-ray structures

New dinuclear cyclometallated palladium complexes of general formula [{Pd(mu-NCO)(C boolean AND N)}(2)] (C boolean AND N = 2-benzoylpyridine (bzpy) I; -NCO- = saccharinate (sacc) a, Phthalimidate (phthal) b or 4,5-dichlorophthalimidate (DiClphthal) c have been synthesized by a simple acid-base reaction involving the di-mu-hydroxo-precursor [{Pd(mu-OH)(bzpy)}(2)] recently reported. Analogous to Ic, complex IIc with C boolean AND N = 2-phenylpyridine (phpy) II has also been prepared, meaning the first examples reported to date of complexes including 4,5-dichlorophthalimidate as ligand coordinating a metal centre. The reaction of bridged imidato precursors against triphenylphosphine to form the mononuclear N-bonded imidato derivatives of general formula [Pd(C boolean AND N)(N-imidate)(PPh3)] IaP, IbP, IcP and IIcP has been achieved under mild conditions. The new complexes were characterized by partial elemental analyses and spectroscopic methods. Structural characterization by X-ray diffraction of Ib and IIcP, the first crystal structure of a complex containing 4,5-diClphthal that has been deposited to date on the Cambridge Structural Database, have confirmed the proposed formulae.

• 出版日期2016-7-15