Multifunctional phosphines such as trispyridylphosphine have the potential to bind to two or more metal ions; however, few examples of structural characterization of these ligands in bimetallic complexes exist in the literature, and even fewer examples exist that examine the influence of an N-coordinated metal on P-coordination to another metal, or the effect(s) of substitution of the pyridyl ring on P,N donor strength. Presented here is synthetic, structural, and spectroscopic details of several (Py')3P–AuX complexes where X is Cl- or Br-, and Py' represents methyl or bromo substituted pyridines. Additionally, we present bimetallic complexes LnM(Py')3P–AuX where M is a late first row transition metal chloride, nitrate, acac, acetate, and/or triflate. These complexes fluoresce in solution and in the solid state, and N,N,N coordination of M(II/III) ion to (Py')3P–AuX affects the fluorescence. We suggest the effects that contribute most strongly to the physical and electronic properties of metal-ligand complexes of this type.

Synthesis and characterization of heterobimetallic complexes supported by substituted trispyridylphosphines

253rd National Meeting (2017)

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