The diversity of Zn(II) coordination networks composed of multi-interactive ligand TPHAP(-) via weak intermolecular interaction

Abstract

Kinetic state networks can be trapped by multi-interactive ligands via weak intermolecular interactions. Self-assembly of a tripyridyl multi-interactive ligand K+ TPHAP(-) (potassium 2,5,8-tri(4&apos;-pyridyl)-1,3,4,6,7,9-hexaazaphenalene) and ZnI2 produced seven types of networks depending on the solvent systems (MeOH/additive solvent): [ZnI(TPHAP)]center dot 3.5CH(3)OH (1) (from MeOH/DMA), [ZnCl0.5I0.5(TPHAP)H2O]center dot 7H(2)O (2) (from MeOH/DMA + water), [ZnI(TPHAP)]center dot 3PhOH center dot 2CH(3)OH (3) (from MeOH/phenol (< 33%)), [ZnI(TPHAP)]center dot 5PhOH center dot 2.5CH(3)OH (4) (from MeOH/phenol (> 50%)), [ZnI(TPHAP)]center dot 2PhNO(2)center dot 6CH(3)OH (from MeOH/nitrobenzene) (5), [ZnI(TPHAP)CH3OH] 3PhNH(2) (6) (from MeOH/aniline), and [(ZnI)(2)(TPHAP)(HCON(CH3)(2))(3)(CH3OH)2](+)[(ZnI2)(2)(TPHAP)(HCON(CH3)(2))]- (HCON(CH3)(2))center dot 4CH(3)OH (7) (from MeOH/DMF). All structures were characterized by single crystal X-ray structure determination. Each topology was analyzed by TOPOS. The structures were categorized into two-or three-periodic structure. The structural features of each network were explained by the weak intermolecular interactions between TPHAP(-) and guest molecules. We demonstrated the multi-interactivity of TPHAP(-) which can recognize slight differences of the weak intermolecular interactions.