Intercalation of [Ni(bpy)3]2+ complex cation into synthetic saponite: Preparation, characterization and magnetic properties
Source abstract
Abstract
The magnetic properties of the hybrid materials formed by coordination compounds and clay minerals represent one of the main challenges in material science. The investigation of the intercalation of tris(2,2′-bipyridine)nickel(II) cations [Ni( bpy) 3] 2+ present in the solution with chloride anions into synthetic saponite (Sap) was carried out by direct exchange of the sodium ions by nickel(II) complex. The final intercalated [Ni( bpy) 3] 2+ saponite complex was characterized by powder X-ray diffraction (XRD), infrared (IR) spectroscopy, carbon and thermal analysis, and for the first time also by magnetic measurements. The carbon analysis proved a full replacement of Na + with [Ni( bpy) 3] 2+ cations. Furthermore, significant increase of the d 001 value of the intercalated saponite confirmed the presence of the [Ni( bpy) 3] 2+ in Sap interlayers. Only limited effect of the saponite layers on the ring C-H or skeletal vibrations of the [Ni( bpy) 3] 2+ complex was observed. The thermal stability of the [Ni( bpy) 3] 2+ increased after its intercalation into saponite. The magnetic properties of the [Ni( bpy) 3] 2+ saponite complex revealed similar magnetic response as the starting compound [Ni( bpy) 3]Cl 2· nH 2O suggesting that the local surroundings of the Ni(II) atoms in [Ni( bpy) 3] 2+ intercalated into saponite remained unchanged.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetism in coordination complexes · Lanthanide and Transition Metal Complexes · Advanced NMR Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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