3 years ago

Synthesis and Characterization of Pt(II) Complexes with Pyridyl Ligands: Elongated Octahedral Ion Pairs and Other Factors Influencing 1H NMR Spectra

Synthesis and Characterization of Pt(II) Complexes with Pyridyl Ligands: Elongated Octahedral Ion Pairs and Other Factors Influencing 1H NMR Spectra
Svetlana Pakhomova, Luigi G. Marzilli, Nerissa A. Lewis, Patricia A. Marzilli
Conditions were identified for isolating isomerically pure trans-[PtII(4-Xpy)2Cl2] complexes bearing 4-substituted pyridines (4-Xpy) with diverse donor abilities even when the 4-Xpy is not volatile. Unusual 1H NMR observations in initial phases of the study were investigated and explained. For example, the very downfield H2/6 signals and high solubility in CDCl3 of [PtII(4-Xpy)4]Cl2 side products are attributed to strong {[PtII(4-Xpy)4]2+,2Cl} ion pairs stabilized by multiple CH···Cl H-bonds, a feature found in solid-state structures.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01294

DOI: 10.1021/acs.inorgchem.7b01294

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