Crystal structure and Hirshfeld surface analysis of [N(CH3)4][2,2′-Fe(1,7-closo-C2B9H11)2]

This work investigates the meta-ferrabis(dicarbollide) anion that was isolated as salt of tetramethylammonium. The structure of the obtained crystal consisted of discrete [2,2′-Fe(1,7-closo-C2B9H11)2]− anions and disordered [N(CH3)4]+ cations. The anion had a considerable chemical stability ensured by ionic and Van der Waals interactions. Thus, Hirshfeld surfaces and fingerprint plot were used to visualize, explore, and quantify intermolecular interactions in the crystal lattice of the title compound. This investigation proved that close contacts were dominated by H⋯H interactions.peerReviewe

Design of lanthanide metal organic frameworks incorporating dicarboxylate ligands

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Supramolecular architecture based on [Fe(CN)6]3− metallotectons and melaminium synthons

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Sardinelle protein isolate as a novel material for oil microencapsulation: Novel alternative for fish by-products valorisation

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Synthesis and Crystal Structures of Various Phases of the Microporous Three-Dimensional Coordination Polymer [Zr(OH)₂(C₂O₄)]_<i>n</i>

A homometallic Zr­(IV)-oxalate three-dimensional (3-D) coordination polymer of formula [Zr­(OH)₂(C₂O₄)­·0.5H₂O] is reported. This compound was found to be a microporous solid with reversible sorption abilities. Upon guest release and sorption, the crystalline material undergoes single crystal to single crystal transitions. The crystal structures for three phases have been solved from single crystal diffraction studies. They consist of the guest containing frameworks [Zr­(OH)₂(C₂O₄)­·0.5H₂O], <b>1</b>,<b> 3</b>, and the guest-free porous phase [Zr­(OH)₂(C₂O₄)], <b>2</b>; all are found with tetragonal space group <i>I</i>4/<i>m</i>. Phase <b>1</b> has been obtained by controlled diffusion of the reagents (ZrO­(NO₃)₂ and H₂C₂O₄) in a silica gel medium; the other phases have been formed from <b>1</b> by thermal activation (<b>2</b>) and re-adsorption of H₂O (<b>3</b>)

Synthesis and Crystal Structures of Various Phases of the Microporous Three-Dimensional Coordination Polymer [Zr(OH)₂(C₂O₄)]_<i>n</i>

A homometallic Zr­(IV)-oxalate three-dimensional (3-D) coordination polymer of formula [Zr­(OH)₂(C₂O₄)­·0.5H₂O] is reported. This compound was found to be a microporous solid with reversible sorption abilities. Upon guest release and sorption, the crystalline material undergoes single crystal to single crystal transitions. The crystal structures for three phases have been solved from single crystal diffraction studies. They consist of the guest containing frameworks [Zr­(OH)₂(C₂O₄)­·0.5H₂O], <b>1</b>,<b> 3</b>, and the guest-free porous phase [Zr­(OH)₂(C₂O₄)], <b>2</b>; all are found with tetragonal space group <i>I</i>4/<i>m</i>. Phase <b>1</b> has been obtained by controlled diffusion of the reagents (ZrO­(NO₃)₂ and H₂C₂O₄) in a silica gel medium; the other phases have been formed from <b>1</b> by thermal activation (<b>2</b>) and re-adsorption of H₂O (<b>3</b>)

Improved antioxidant activity and oxidative stability of spray dried European eel (Anguilla anguilla) oil microcapsules: Effect of emulsification process and eel protein isolate concentration

International audienceThe objective of this study was to prepare European eel oil (EO) microcapsules using European eel protein isolate (EPI) as a wall material and investigate its oxidative stability. The EPI emulsions were obtained at different EO: EPI ratios (1:1, 1:2 and 1:4, w/w) and using two emulsification procedures: Homogenization (H) and homogenization followed by ultrasonication (HU) treatments. The microcapsules prepared by combining the two emulsification processes (HU) and at core and wall ratio of was 1:4 presented the smallest particles size and the greatest encapsulation efficiency (68.50%) and oxidative stability. Scanning electron microscopy (SEM) images proved the spherical shape of all microcapsules without fissure on the surface. The capsules exhibited an interesting antioxidant activity depending on the EO:EPI ratio, especially for the metal chelating potential. Thus, the effect of ultrasonication process and the EPI concentration on the characteristic, the stability and the antioxidant activity of the encapsulated EO has been proved

The solid solution (Fe0.81Al0.19)(H2PO4)3 with a strong hydrogen bond

A sample of synthetic (Fe0.81Al0.19)(H2PO4)3 was prepared by hydro­thermal methods in order to determine the crystal structure. The compound is a new monoclinic variety (γ-form) and the structure is based on a two-dimensional framework of distorted corner-sharing MO6 (M = Fe, Al) polyhedra sharing corners with PO4 tetra­hedra