Copper-, Palladium-, and Platinum-Containing Complexes of an Asymmetric Dinucleating Ligand

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• 作者：Mohammad Reza Halvagar ; Benjamin Neisen ; William B. Tolman
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：January 18, 2013
• 年：2013
• 卷：52
• 期：2
• 页码：793-799
• 全文大小：362K
• 年卷期：v.52,no.2(January 18, 2013)
• ISSN：1520-510X

文摘

The coordination chemistry of an asymmetric dinucleating hexadentate ligand LH₂ comprising neutral alkyltriamine and potentially dianionic dicarboxamido-pyridyl donor sets with copper, palladium, and platinum has been explored. Monometallic, dicopper, and heterodinuclear Cu鈥揚d and 鈭扨t complexes have been prepared and characterized, including by NMR, EPR, UV鈥搗is, and IR spectroscopy and X-ray crystallography. For example, the monometallic complexes [(LH₂)MCl]X (M = Cu, X = OTf; M = Pd or Pt, X = Cl) were prepared, wherein the metal(II) ions are coordinated to the triamine portion and the pyridyldicarboxamide is unperturbed. Treatment of LH₂ with [MesCu]_x (Mes = mesityl) provided a monocopper(I) complex, again with the metal coordinated only to the trialkylamine donor set. Reaction of [(LH₂)CuCl]OTf with NaOMe resulted in an unexpected migration of the copper(II)鈥揷hloride fragment to the pyridyldicarboxamide site to yield Na[LCuCl], from which a dicopper complex LCu₂Cl₂ and mixed-metal complexes LCu(Cl)M(Cl) (M = Pd, Pt) were prepared by addition of CuCl₂ or MCl₂, respectively. The heterodinuclear complexes were also prepared by addition of CuCl₂ to [(LH₂)MCl]Cl.