Search

The asymmetric unit of the polymeric title compound {[Co2(C12H7NO8)(H2O)2]·1.6H2O}n comprises two CoII ions, which are coordinated by fully deprotonated 2-aminodiacetic terephthalic acid (adtp4–) and terminal water molecules in distorted octahedral N1O5 and O6 coordination environments. The title compound features tetranuclear CoII units bridged by κ3O:O:O′- and κ3O:O,O′-carboxylate groups, which are joined into ribbons via syn–anti carboxylate bridges. The parallel adtp4– ligands with an alternately reversed arrangement further link adjacent CoII ribbons into (010) layers, which are assembled into a three-dimensional supramolecular network via intermolecular hydrogen bonds. The disordered water solvent molecules are situated in channels parallel to [100]. Magnetic measurements and analyses reveal that the title compound displays antiferromagnetic behaviour. The purity of the title compound was characterized by X-ray powder diffraction.

The asymmetric unit of the polymeric title compound {[Co2(C12H7NO8)-(H2O)2]·1.6H2O}n comprises two CoII ions, which are coordinated by fully deprotonated 2-aminodiacetic terephthalic acid (adtp4-) and terminal water molecules in distorted octahedral N1O5 and O6 coordination environments. The title compound features tetranuclear CoII units bridged by ·3O:O:O'- and κ³O:O,O'-carboxylate groups, which are joined into ribbons via syn-anti carboxylate bridges. The parallel adtp4- ligands with an alternately reversed arrangement further link adjacent CoII ribbons into (010) layers, which are assembled into a three-dimensional supramolecular network via intermolecular hydrogen bonds. The disordered water solvent molecules are situated in channels parallel to [100]. Magnetic measurements and analyses reveal that the title compound displays antiferromagnetic behaviour. The purity of the title compound was characterized by X-ray powder diffraction. [ABSTRACT FROM AUTHOR]

The article discusses a study which examined the boron adsorption behavior of gluconate-intercalated magnesium-aluminum-layered double hydroxides (Mg-Al-LDH) which was prepared via ion-exchange method. LDH refers to a group of anionic clays composed of metal hydroxides that are positively charged. Results showed that the adsorption amount increased as contact time increases and that the adsorption equilibrium could be reached after about four hours. In addition, the amount of boron adsorption increased as pH increases because part of boron existed in the form of an acid that could not be adsorbed.