Retention of single crystals of two Co(<scp>ii</scp>) complexes during chemical reactions and rearrangement

Mobin, Shaikh M.; Mohammad, Akbar

doi:10.1039/c4dt01312c

Cited by 14 publications

(15 citation statements)

References 65 publications

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“…X-ray diffraction (XRD) patterns of known references 88 , 89 were compared to experimental XRD datasets obtained for Co-rich solids and Sm-rich solids, showing agreement with CoSO 4 ·6H 2 O 88 and Sm 2 (SO 4 ) 3 ·8H 2 O 89 (Supplementary Fig. 1 ).…”

Section: Resultsmentioning

confidence: 66%

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Solvent-driven fractional crystallization for atom-efficient separation of metal salts from permanent magnet leachates

et al. 2022

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This work reports a dimethyl ether-driven fractional crystallization process for separating rare earth elements and transition metals. The process has been successfully applied in the treatment of rare earth element-bearing permanent magnet leachates as an atom-efficient, reagent-free separation method. Using ~5 bar pressure, the solvent was dissolved into the aqueous system to displace the contained metal salts as solid precipitates. Treatments at distinct temperatures ranging from 20–31 °C enable crystallization of either lanthanide-rich or transition metal-rich products, with single-stage solute recovery of up to 95.9% and a separation factor as high as 704. Separation factors increase with solution purity, suggesting feasibility for eco-friendly solution treatments in series and parallel to purify aqueous material streams. Staged treatments are demonstrated as capable of further improving the separation factor and purity of crystallized products. Upon completion of a crystallization, the solvent can be recovered with high efficiency at ambient pressure. This separation process involves low energy and reagent requirements and does not contribute to waste generation.

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Section: Resultsmentioning

confidence: 66%

“…All data presented in this study are included in this published article, its Supplementary Information, and Supplementary Source Data file. Data presented in this study include previously reported results 73 – 75 , 81 , 88 , 89 . Source data are provided with this paper.…”

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confidence: 80%

Solvent-driven fractional crystallization for atom-efficient separation of metal salts from permanent magnet leachates

et al. 2022

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“…Two Co‐based nanocomposites ( NC‐1 and NC‐2 ) were synthesized from single‐source molecular precursors (SSMPs) using wet‐chemical reduction method. We used our previously reported SSMPs, 1 and 2 for synthesizing nanocomposites . The structure of 1 and 2 was found to be differ only by their counter anions (Scheme ).…”

Section: Resultsmentioning

confidence: 99%

“… (A‐B) Single‐source molecular precursors ( 1 and 2 )and synthesis of nanocomposites ( NC‐1 and NC‐2 ).…”

Section: Resultsmentioning

confidence: 99%

Enthralling Adsorption of Different Dye and Metal Contaminants from Aqueous Systems by Cobalt/Cobalt Oxide Nanocomposites Derived from Single‐Source Molecular Precursors

et al. 2018

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The cobalt/cobalt oxide nanocomposites (Co/CoO NCs), NC-1 and NC-2 were synthesizedfrom our recently reported singlesource molecular precursors (SSMPs) [Co(hep-H)(H 2 O) 4 ]SO 4 , (1) and [Co(hep-H) , respectively, via wet-chemical reduction method. Our purpose was to study the effect of different counter anions (i. e. SO 4 2À and NO 3 À ) of precursors on the surface properties of synthesized materials. Both the nanocomposites were characterized by Powder X-ray diffraction (PXRD), Scanning electron microscopy (SEM), Energy-dispersive X-ray analysis (EDAX), Transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy and Brunauer-Emmett-Teller (BET) analysis. Two distinct morphological as well as surface features have been obtained using 1 and 2 viz. variable spheres (NC-1) with low surface area and flakes (NC-2) with high surface area. The adsorption behavior of these nanocomposites on industrial dyes and metals showed excellent dye adsorption (99.6% to 97.2%) and good to moderate metal adsorption efficiency of NC-1. The NC-1 could be recycled up to five times for dyes and three times for metals, advocating its practical applications in industry.

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“…1. The structure displayed strong intermolecular hydrogen bonding between O1 of one molecule and N2 of other molecule establishing a closed circle structure to form dimeric arrangement [22]. Hirshfeld interactions studies: The interactions are further studied by Hirshfeld interactions studies.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Design, Synthesis, Single X-Ray Crystal Structure, DFT and Molecular Docking Studies of Novel Clip Type-Pyridyltetrazole Analogues

Babu¹,

Reddy²,

Ghosh³

et al. 2018

Asian J. Chem.

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Novel clip type-pyridyltetrazole analogs of 1,3-bis(5-(pyridin-2-yl)-1H-tetrazol-1-yl)propan-2-ol (3A) and 1,3-bis(5-(pyridin-2-yl)-2H-tetrazol-2-yl) propan-2-ol (3B) have been synthesized by the reaction of 2-(1H-tetrazol-5-yl)pyridine (2) with 0.5 equivalent of epichlorohydrine in DMF using K2CO3 as a base. Relevant monomers of 1-chloro-3-(5-(pyridin-2-yl)-1H-tetrazol-1-yl)propan-2-ol (3C) and 1-chloro-3-(5-(pyridin-2-yl)-2H-tetrazol-2-yl)propan-2-ol (3D) have been synthesized by reaction of compound 2 with one equivalent of epichlorohydrine in DMF using K2CO3 as a base. The compounds 3C and 3D are further modified by the reaction sequences to obtain the ligands 1-(2-(hydroxymethyl)phenoxy)-3-(5-(pyridin-2-yl)-1H-tetrazol-1-yl)propan-2-ol (3G) and 1-(2-(hydroxymethyl)phenoxy)-3-(5-(pyridin-2-yl)-2H-tetrazol-2-yl)propan-2-ol (3H) respectively. The eight synthesized compounds (3A-3H) were characterized by 1 H NMR, 13 C NMR, IR and Mass spectroscopy. The compound 3A, was crystallized in triclinic primitive system space group P2(1)/c with a = 8.9442 Å, b = 9.2097 Å, c = 11.3558 Å, V = 814.68 Å, R1 = 0.0213 at 298 K. The compounds 3A and 3B were optimized, HOMO/ LUMO and molecular electrostatic potential studies were carried by DFT calculations with B3LYP/6.311G** method. The molecular docking studies were performed on 3A, 3B, 3G and 3H and the studies reveal that all the compounds exist in crescent shapes.

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Retention of single crystals of two Co(ii) complexes during chemical reactions and rearrangement

Cited by 14 publications

References 65 publications

Solvent-driven fractional crystallization for atom-efficient separation of metal salts from permanent magnet leachates

Solvent-driven fractional crystallization for atom-efficient separation of metal salts from permanent magnet leachates

Enthralling Adsorption of Different Dye and Metal Contaminants from Aqueous Systems by Cobalt/Cobalt Oxide Nanocomposites Derived from Single‐Source Molecular Precursors

Design, Synthesis, Single X-Ray Crystal Structure, DFT and Molecular Docking Studies of Novel Clip Type-Pyridyltetrazole Analogues

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