Polymeric assembling through reciprocal metal-η2-arene π-interactions: Synthesis and X-ray characterization of [HgII(RPhNNNPhR′)2Py]2 (R = NO2, R′ = F), an asymmetric bis diaryl-substituted triazenide–pyridinyl complex of Hg(II)

Hg(SCN)2 reacts with 3-(2-fluorophenyl)-1-(4-nitrophenyl)triazene in tetrahydrofuran in the presence of triethylamine to give orange crystals of [HgII(RPhNNNPhR′)2Py]2 (R = NO2, R′ = F), a new polymeric triazenide–pyridinyl complex of Hg(II) with reciprocal metal-η2-arene π-interactions. The crystal structure belongs to the triclinic space group View the MathML sourceP1¯, and the lattice of [HgII(RPhNNNPhR′)2Py]2 can be viewed as a supramolecular unidimensional assembling of tectonic [HgII(RPhNNNPhR′)2Py] units linked through intermolecular metal-arene π interactions and non-classical C–H⋯O hydrogen bonding.