Chemistry & Earth Sciences: المرسلات الحديثة
السجلات المعروضة 161 -- 180 من 601
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Catalytic C-H oxidations by nonheme mononuclear Fe(II) complexes of two pentadentate ligands: Evidence for an Fe(IV) oxo intermediate
( Elsevier , 2016 , Article)The oxidation reactions of alkanes with hydrogen peroxide and peracids (peracetic acid (PAA) and m-chloroperoxybenzoic acid (mCPBA)) catalysed by two Fe(II) complexes of pentadentate {N5}-donor ligands have been investigated. ... -
Metal complex as p-type dopant-based organic spiro-OMeTAD hole-transporting material for free-Li-TFSI perovskite solar cells
( American Institute of Physics , 2024 , Article)Lithium bis(fluorosulfonyl)imide (Li-TFSI) is an efficient p-dopant that has been used to enhance the conductivity of perovskite solar cells (PSCs). However, the performance of the corresponding devices is still not ... -
Crystal structure of the thalidomide analog (3aR∗,7aS∗)-2-(2,6-dioxopiperidin-3-yl)hexahydro-1H-isoindole-1,3(2H)-dione
( International Union of Crystallography , 2018 , Article)The title compound, C13H16N2O4, crystallizes in the monoclinic centrosymmetric space group, P21/c, with four molecules in the asymmetric unit, thus there is no crystallographically imposed symmetry and it is a racemic ... -
A Novel Green Synthesis of Thalidomide and Analogs
( Hindawi Limited , 2017 , Article)Thalidomide and its derivatives are currently under investigation for their antiangiogenic, immunomodulative, and anticancer properties. Current methods used to synthesize these compounds involve multiple steps and extensive ... -
Crystal structure, spectral, thermal and experimental/computational investigation of Anthracen-benzo[d]thiazol-2-amine new Schiff base derivative
( Elsevier B.V. , 2021 , Article)The N-S-N-tridentate ((E)-N-(anthracen-9-ylmethylene)benzo[d]thiazol-2-amine product was made available by dehydration of 2-Aminobenzothiazole with 9-anthraldehyde under non-classical microwave condition, five-minute ... -
(E)-2-{[4-(dimethylamino)benzylidene]amino}-5-nitrophenol
( International Union of Crystallography , 2014 , Article)The title Schiff base compound, C15H15N 3O3, crystallizes with two molecules (A and B) in the asymmetric unit. Each molecule adopts an E conformation around the C= N imine bond. The two molecules have minor differences in ... -
One‐pot microwave‐assisted synthesis of water‐soluble pyran‐2,4,5‐triol glucose amine schiff base derivative: Xrd/hsa interactions, crystal structure, spectral, thermal and a DFT/TD‐DFT
( MDPI AG , 2021 , Article)The(3R,4R,6R)‐3‐(((E)‐2‐hydroxybenzylidene)amino)‐6‐(hydroxymethyl)tetrahydro‐2H-pyran‐2,4,5‐triol water‐soluble Glucose amine Schiff base (GASB‐1) product was made available by condensation of 2‐hydroxybenzaldehyde with ... -
A Comparison between Different Agro-wastes and Carbon Nanotubes for Removal of Sarafloxacin from Wastewater: Kinetics and Equilibrium Studies
( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)In the current study, eco-structured and efficient removal of the veterinary fluoroquinolone antibiotic sarafloxacin (SARA) from wastewater has been explored. The adsorptive power of four agro-wastes (AWs) derived from ... -
Regulatory Mechanisms That Guide the Fetal to Postnatal Transition of Cardiomyocytes
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Heart disease remains a global leading cause of death and disability, necessitating a comprehensive understanding of the heart’s development, repair, and dysfunction. This review surveys recent discoveries that explore the ... -
Experimental and theoretical investigations of the effect of bis-phenylurea-based aliphatic amine derivative as an efficient green corrosion inhibitor for carbon steel in HCl solution
( Elsevier , 2023 , Article)A novel bis-phenylurea-based aliphatic amine (BPUA) was prepared via a facile synthetic route, and evaluated as a potential green organic corrosion inhibitor for carbon steel in 1.0 M HCl solutions. NMR spectroscopy ... -
Spectrofluorometric investigations on the solvent effects on the photocyclization reaction of diclofenac
( Elsevier , 2023 , Article)The solvent effects on the photochemical conversion rate of the photosensitizing drug diclofenac (DCF) were investigated using steady-state fluorescence spectroscopy. The spectral information obtained for the photochemical ... -
Mechanochemical arylative detrifluoromethylation of trifluoromethylarenes
( Royal Society of Chemistry , 2023 , Article)The stoichiometric defluorinative functionalization of ArCF3 is a conceptually appealing research target. It enables the challenging late-stage functionalization of CF3-containing aromatic molecules and contributes to the ... -
l-Proline-Catalyzed Three-Component Reaction of 4-Chloro-3-formylcoumarin, Sodium Sulfide, and α-Halo Ketones: A Direct Approach to Thieno[3,2- c ]coumarins
( Georg Thieme Verlag KG , 2023 , Article)A new protocol for the synthesis of thieno[3,2-c]coumarins is disclosed. In this method, a 3-formyl-2-oxo-2H-chromene-4-thiolate anion is generated in situ by treatment of 4-chloro-3-formylcoumarin with sodium sulfide. ... -
Uv-l/sulfite advanced reduction process as an efficient method for chlorate reduction in water
( Desalination Publications , 2021 , Article)The efficient reduction of disinfection by-products (DBPs) is currently a major challenge in water treatment facilities due to their high toxicity to human health and long-time residence in the environment. In this work, ... -
Thermogravimetric kinetics study of scrap tires pyrolysis using silica embedded with NiO and/or MgO nanocataly
( American Society of Mechanical Engineers (ASME) , 2021 , Article)In this study, a set of three new silica-based embedded with NiO and/or MgO nanocatalysts (SBNs) have been prepared and tested for the pyrolysis of scrap tires (STs). The intent is to identify and optimize the best ... -
Lignin and lignocellulosic materials: A glance on the current opportunities for energy and sustainability
( Springer International Publishing , 2021 , Book chapter)Fossil fuels are running out fast. The energy demand is one of the largest challenges humankind has ever faced. Applications targeting renewable resources that are nonpetroleum based are booming. The scientific community ... -
Construction of Bi2S3/TiO2/MoS2 S-Scheme Heterostructure with a Switchable Charge Migration Pathway for Selective CO2 Reduction
( John Wiley and Sons Inc , 2021 , Article)Switching between the redox potential of an appropriate semiconductor heterostructure could show critical applications in selective CO2 reduction. Designing a semiconductor photocatalyst with a wavelength-dependent response ... -
Combined experimental and computational investigations of the fluorosolvatochromism of chromeno[4,3-b]pyridine derivatives: Effect of the methoxy substitution
( Elsevier , 2023 , Article)Extensive research has been conducted on the spectral properties of chromeno[4,3-b]pyridine derivatives, owing to their potential applications in sensing, optoelectronic devices, and drug discovery. This study presents a ... -
A new depositional model and sequence stratigraphic interpretation for the upper Jurassic Arab "D" reservoir in Qatar
( Wiley online Library , 2001 , Article)Deposition of the Arab Formation on the Arabian Plate followed a eustatic sea-level high during the Oxfordian that deposited the open-marine shelfal carbonates of the Hanifa and Jubaila Formations. Oolite/peloidal shoals ... -
Chronostratigraphy and geochemical characterization of volcanic rocks from the Hormuz Complex: Constraints from the Halul Island, The State of Qatar
( sultan qaboos university , 2003 , Article)Geochemical and Sr-Nd isotopic data are reported for volcanic rocks in the Hormuz Complex, Halul Island, Eastern Qatar. Two groups of volcanic rocks are distinct in their geochemical characteristics. Group 1 samples have ...
