Metallosupramolecular silver and mercury complexes constructed from two bis[4-(3-pyridyl)pyrimidinylthiomethyl]benzenes: Effect of positional isomerism of ligands and metal ions

[Ag2L2(NO3)2]n (1), [HgL0.52OAc2]n (2), [HgL2I2]n (3), [Ag3L23(NO3)3]n (4) and [HgL3I2]n (5) were assembled by the reactions of L2 and L3 (L2 = 1,2-bis[4-(3-pyridyl)pyrimidinylthiomethyl]benzene, L3 = 1,3-bis[4-(3-pyridyl)pyrimidinylthiomethyl]benzene) with AgNO3, Hg(OAc)2 and HgI2. The structural motifs of these complexes are multiform, from 3D interpenetrating networks and corrugated 2D networks to a 1D single stranded helix. It is found that conformation changes of the ligands after interaction with the metal salts occur due to positional isomerism of the xylyl groups and the effect of the metal ions.

Graphical abstract[Ag2L2(NO3)2]n (1), [HgL0.52OAc2]n (2), [HgL2I2]n (3), [Ag3L23(NO3)3]n (4) and [HgL3I2]n (5) were assembled by the reactions of two bis[4-(3-pyridyl)pyrimidinylthiomethyl]benzenes with metal salts. The structural motifs are multiform, from 3D interpenetrating networks and corrugated 2D networks to a 1D single stranded helix. It is found that conformation changes of ligands after interaction with the metal salts occur due to the positional isomerism of xylyl groups and the effect of the metal ions.Figure optionsDownload full-size imageDownload as PowerPoint slide