A 3D chiral Zn(ii) coordination polymer with triple Zn–oba–Zn helical chains (oba = 4,4′-oxybis(benzoate))

Abstract

The solvothermal reaction of Zn(II) and 4,4'-oxybis(benzoic acid) in the presence of anhydrous ethanol leads to the generation of a novel 3D chiral coordination polymer with triple helical chains; the resulting crystals were not a racemic mixture but had an enantiomeric excess, which was confirmed by measuring the optical rotation of bulk samples using solid state vibrational circular dichroism (VCD).

A Zinc(II) Coordination Polymer Based on a Chain of {Zn2O7} Bitetrahedra Bridged by 3‐Methoxybenzoates

“…[5][6][7] In the last two decades several carboxylates of Zn(II) or the higher congener Cd(II) have been studied by many research groups. [8][9][10][11][12][13][14][15][16][17][18][19][20] These studies have resulted in the characterization of several zinc coordination polymers of varying dimensionalities (1D or 2D or 3D) which exhibit interesting structures and luminescene properties. [8][9][10][11][12][13][14][15][16][17] The structures of several dinuclear Zn(II) carboxylates with bridging hydroxo ligand are archived in the Cambridge structural database (CSD).…”

Novel organotin (IV) complexes derived from 4,4′‐oxybisbenzoic acid: synthesis, structure, in vitro cytostatic activity and binding interaction with BSA

“…As a dicarboxylic acid ligand, 4,4′‐oxybisbenzoic acid seems to possess the following interesting structural characteristics: (a) Each carboxy group also has two donor oxygen atoms and can be deprotonated to generate various coordination modes, such as monodentate, bidentate bridging and bidentate chelating. (b) Long chain between two carboxy groups and ‘V' shape ligands bring more possibilities of other interesting structures to novel organotin complex . (c) The ligand can be twisted and hold flexibility due to the presence of oxygen atoms between the two aromatic rings, which can provide opportunities for construction of organotin complexes.…”

Homochiral coordination polymers with distorted helices consisting of achiral ligand

“…Design and syntheses of chiral coordination polymers have become a hot topic in the past decade due to their graceful architectures, advantageous properties, and potential applications in the areas of enantioselective catalysis and separation, nonlinear optics, and multifunctional materials including chiral and polar magnets [5][6][7][8][9][10][11][12]. Chiral coordination polymers can be obtained from self-assembly of metal centers with chiral ligands or achiral ligands in the presence of auxiliary chiral agents as templates [13,14].…”