Crystal structure, spectroscopic and magnetic properties of a new iron(III) complex

Abstract

We report herein the synthesis and physicochemical characterization of a new mixed-ligand iron(III)This compound is prepared by slow evaporation at room temperature and characterized by single crystal X-ray diffraction. It is characterized by IR and UV-VIS spectra and thermal analysis (TG and DTA). In this compound, the iron ion has a slightly distorted square bipyramidal environment, coordinated by two chelating oxalate ions and two water molecules. Structural cohesion is essentially established by π-π interactions between the rings of pyridine groups and intermolecular hydrogen bonds connecting the ionic entities and uncoordinated water molecules. Magnetic susceptibility measurements exhibit the paramagnetic behavior at high temperatures. However, at low temperatures, the magnetic data show the occurrence of weak antiferromagnetic intermolecular interactions between the local spins.

Novel Synthesis of 3D Mesoporous FePO4 from Electroflocculation of Iron Filings as a Precursor of High-Performance LiFePO4/C Cathode for Lithium-Ion Batteries

“…The three-dimensional structure is formed by complex physical cross-linking of hydrogen bonding. 38 , 46 The continuous nanoparticles and nanorods act as nuclei in the FePO 4 ·2H 2 O precipitate. As the reaction proceeds, neighboring nuclei have enough time to come together at planar interfaces, forming an infinite layer parallel to the ac surface.…”

“…As illustrated in Figure S5, FePO 4 ·2H 2 O has two-dimensional layer characteristics through an infinite one-dimensional sawtooth chain structure along the b -axis by bridging the (FeO 6 ) octahedral group with a (PO 4 ) tetrahedral group in an angle-sharing manner. The three-dimensional structure is formed by complex physical cross-linking of hydrogen bonding. , The continuous nanoparticles and nanorods act as nuclei in the FePO 4 ·2H 2 O precipitate. As the reaction proceeds, neighboring nuclei have enough time to come together at planar interfaces, forming an infinite layer parallel to the ac surface.…”