Complexation of Michler’s Ketone by Trimeric Perfluoro-Ortho-Phenylenemercury: Synthesis, Structure and Spectroscopic Properties of a New Supramolecular Adduct

Anionic Complexes of the Perfluorinated Three‐Mercury Anticrown (o,o’‐C6F4C6F4Hg)3. Dependence of the Anion Coordination Type on Counter‐Cation in Case of Chloride and Bromide Anions

“…While the spectra of bromides 11 and 13 in CH 2 Cl 2 are similar, the spectra of chlorides 10 and 12 in the same solvent are somewhat different from each other; in particular, the F(1)-Hg coupling constants for 10 are much greater than for 12 indicating the change in electron density on Hg atoms. No such differences depending on counter-cation for pairs of chloride and bromide complexes could be observed in 19 F spectra in acetone which, probably, can be associated with the greater solubilising ability of acetone. These differences could…”

“…Analysing the 19 F NMR spectra of complexes 10-13, we have found a noticeable effect of the solvent polarity on them. While the spectra of bromides 11 and 13 in CH 2 Cl 2 are similar, the spectra of chlorides 10 and 12 in the same solvent are somewhat different from each other; in particular, the F(1)-Hg coupling constants for 10 are much greater than for 12 indicating the change in electron density on Hg atoms.…”

“…To clarify the behaviour of obtained halide complexes of 1 in solution we compared 19 F NMR spectra both in highly polar (acetone) and weakly polar (CH 2 Cl 2 ) solvents (see Tables 1 and 2; for signals assignment see Ref. [26]).…”

Coordination Chemistry of Anticrowns. Synthesis and Structures of Complexes of the Perfluorinated Three‐Mercury Anticrown (o‐C6F4Hg)3 with Monohalogenobenzenes

“…In the last decades, there has been considerable interest in the binding and catalytic properties of macrocyclic multidentate Lewis acids representing antipodes of conventional crown compounds and called anticrowns (see reviews and papers cited in refs). These remarkable reagents exhibit a high affinity toward various anions and neutral Lewis bases forming complexes with them wherein the Lewis basic species is cooperatively coordinated by all Lewis acidic centers of the anticrown.…”

Tridentate Lewis Acids Based on 1,3,5‐Trisilacyclohexane Backbones and an Example of Their Host–Guest Chemistry

“…[8] This tri-dentate Lewis acid shows the complexation of halogens as ap olyanionicc hain in the crystal. [9] Investigations with other substrates like molecules with carbonyl groups [7,10] and acetylenes [11] have revealedt he potentialo ft his mercury compound in coordination chemistry.…”