Journal
INORGANIC CHEMISTRY
Volume 52, Issue 2, Pages 793-799Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic301914u
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Funding
- National Institutes of Health [GM 47365]
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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-Pd and -Pt complexes have been prepared and characterized, including by NMR, EPR, UV-vis, 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)-chloride fragment to the pyridyldicarboxarnide 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.
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