Supramolecular assemblages through metal-η4-arene π-interactions: Synthesis and X-ray characterization of {HgII[NNN(PhR)2]2}n (R = NO2, F), a bis diaryl-substituted triazenide complex polymer of Hg(II)

3-(2-fluorophenyl)-1-(3-nitrophenyl)triazene reacts with mercury(II) acetate in tetrahydrofuran in the presence of 2,2′-bipyridilamine to give yellow crystalline blocks of polymeric {HgII[NNN(PhR)2]2}n (R = NO2, F). The new triazenide complex belongs to the triclinic space group P1¯. In a molecule of {HgII[NNN(PhR)2]2} two deprotonated 1,3-diaryl-substituted triazenide ligands are coordinated in an opposite way to one Hg(II) ion by means of primary and secondary bonds. The Hg(II) ions are placed on the inversion centers of translation operated {Hg[NNN(PhR)2]2} moieties which are stacked along the crystallographic a-axis forming infinite unidimensional chains linked through metalocene alike Hg-η2,η2-arene π-interactions.

Graphical abstract3-(2-fluorophenyl)-1-(3-nitrophenyl)-triazene react with mercury(II) acetate in tetrahydrofuran in the presence of 2,2′-bipyridilamine to give yellow blocks of polymeric {HgII[NNN(PhR)2]2}n (R = NO2, F). The Hg(II) ions are the inversion centers of {HgII[NNN(PhR)2]2} moieties which are assembled as unidimensional chains linked through metalocene alike Hg-η2,η2-arene π-interactions.Figure optionsDownload full-size imageDownload as PowerPoint slide