AI Article Synopsis
- The self-assembly of silver salts (AgOTf and AgF) with specific hexatopic ligands leads to the creation of discrete sandwich-shaped complexes.
- Single-crystal X-ray diffraction analysis revealed that the fluoride anion is centrally coordinated within silver geometric units, highlighting the unique structural arrangement with the ligands.
- The complexes demonstrate high symmetry in solution, indicated by the presence of a single set of proton resonances, suggesting a face-to-face arrangement of the ligands.
Article Abstract
Self-assembly of AgOTf and AgF with the hexatopic ligands hexakis(pyridin-2-yl)benzene () and 2,4,6-tris(pyridin-2-yl)-1,3,5-tris(quinolin-2-yl)benzene () affords the discrete sandwich-shaped complexes [AgF()](OTf), [AgF()](OTf), and [AgF()](OTf). The solid-state structures of the complexes were characterized by single-crystal X-ray diffraction analysis, which revealed that the fluoride anion is coordinated in the center of the Ag-square or Ag-pentagon units which are positioned between two molecules of the hexakis(azaheteroaryl)benzene. The generation of complexes is dictated by a unique cooperation of ligand coordination, argentophilicity, and fluoride anion inclusion. All three complexes adopt highly symmetrical structures in solution, as evidenced by appearance of one set of proton resonances for the two ligands arranged face to face.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7307899 | PMC |
| http://dx.doi.org/10.1021/acs.inorgchem.9b03664 | DOI Listing |
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Article Synopsis
- The self-assembly of silver salts (AgOTf and AgF) with specific hexatopic ligands leads to the creation of discrete sandwich-shaped complexes.
- Single-crystal X-ray diffraction analysis revealed that the fluoride anion is centrally coordinated within silver geometric units, highlighting the unique structural arrangement with the ligands.
- The complexes demonstrate high symmetry in solution, indicated by the presence of a single set of proton resonances, suggesting a face-to-face arrangement of the ligands.
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The synthesis, characterization, and photophysical properties of a wide variety of bis-cyclometalated Pt(IV) complexes featuring a C2-symmetrical or unsymmetrical {Pt(ppy)2} unit (sym or unsym complexes, respectively; ppy = C-deprotonated 2-phenylpyridine) and different ancillary ligands are reported. Complexes sym-[Pt(ppy)2X2] (X = OTf(-), OAc(-)) were obtained by chloride abstraction from sym-[Pt(ppy)2Cl2] using the corresponding AgX salts, and the triflate derivative was employed to obtain homologous complexes with X = F(-), Br(-), I(-), trifluoroacetate (TFA(-)). Complexes unsym-[Pt(ppy)2(Me)X] (X = OTf(-), F(-)) were prepared by reacting unsym-[Pt(ppy)2(Me)Cl] with AgOTf or AgF, respectively, and the triflate derivative was employed as precursor for the synthesis of the homologues with X = Br(-), I(-), or TFA(-) through its reaction with the appropriate anionic ligands.
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