Results 1 to 10 of about 20,574 (181)

Cu‐Ln (Ln = Gd, Eu, Sm) Dinuclear Complexes Based on Schiff Base o‐van‐en Ligand: Syntheses, Crystal Structures, and Magnetic Properties [PDF]

open access: yesChemistry – A European Journal, Volume 31, Issue 34, June 17, 2025.
Three new heterobimetallic complexes [CuCl(o‐van‐en)LnCl(H2O)3]Cl·C2H6O (Ln = Sm (1), Eu (2), Gd (3)), with the bicompartmental Schiff‐base ligand (o‐van‐en)2−, were synthesized using horizontal diffusion. Complexes 2 and 3 exhibit field‐supported slow magnetic relaxation, while complex 1 does not display AC activity.
Andrea Koščíková   +6 more
wiley   +2 more sources

Identifying the Thermodynamic Driving Force of Metal Extraction by Hydrophobic Eutectic Solvents [PDF]

open access: yesChemSusChem, Volume 19, Issue 11, 15 June 2026.
Solvent extraction (SX) in hydrophobic eutectic solvent (HES) appears as an extension rather than a “revolution” of SX in common organic diluents for a given neutral extractant. A detailed thermodynamic and spectroscopic study shows that SX in HES imposes an enthalpic penalty but lowers the entropy cost of Eu3+ transfer, leading to enhanced metal ...
Inês C. M. Vaz   +11 more
wiley   +2 more sources

Charge Makes a Difference: Molecular Ionic Bismuth Compounds

open access: yesAngewandte Chemie, Volume 135, Issue 24, June 12, 2023., 2023
Charged molecular bismuth species encompass cationic and anionic complexes with organic and inorganic ligand spheres as well as ligand‐free molecular clusters. This review provides an overview of their syntheses, structures, and bonding modes. It outlines how the heavy metal bismuth, with its capability of forming non‐toxic compounds, can be understood
Johanna Heine   +3 more
wiley   +2 more sources

Investigation and Characterization of Nitrazapropane‐, Oxapropane‐ and Trinitrazaheptane‐Bridged Nitro Esters

open access: yesEuropean Journal of Organic Chemistry, Volume 26, Issue 47, December 13, 2023., 2023
Starting from a modified Bachmann procedure, which is commonly used for the synthesis of RDX and HMX, two new nitro esters were synthesized and investigated, 1,3‐dinitroxy‐2‐nitrazapropane and 1,7‐dinitroxy‐2,4,6‐trinitrazaheptane. Furthermore, the structural similar compound 1,3‐dinitroxy‐2‐oxapropane was obtained.
Jasmin T. Lechner   +6 more
wiley   +1 more source

Weed control and weed biomass influenced first cutting forage accumulation and nutritive value of spring‐seeded alfalfa

open access: yesAgronomy Journal, Volume 115, Issue 6, Page 2979-2989, November/December 2023., 2023
Abstract Weeds can influence the economics of alfalfa (Medicago sativa L.) production by reducing forage yield and nutritive value or by contaminating hay. Field studies were conducted in Idaho in 2021 and 2022 to evaluate the effect of weed control treatments on alfalfa forage accumulation, weed biomass, and nutritive value.
Chandra L.‐M. Montgomery   +2 more
wiley   +1 more source

Melt Castable Derivatives of Pentaerythritol Tetranitrate

open access: yesChemistry – A European Journal, Volume 29, Issue 22, April 18, 2023., 2023
Energetic materials: In this work, the pentaerythritol backbone was modified with amine, nitramine and tetrazole functionalities leading to powerful melt castable pentaerythritol tetranitrate derivatives that outperform TNT. Exciting insights into the influence of these functionalities on mechanical sensitivities and melting behavior are observed and ...
Maximilian Benz   +6 more
wiley   +1 more source

Nitrate Upcycling Mediated by Organonickel Catalysis

open access: yesAngewandte Chemie, Volume 136, Issue 39, September 23, 2024.
A nickel‐catalyzed nitrate (NO3−) upcycling technology has been developed that uses a nickel pincer complex as a bifunctional catalyst to effect sequential deoxygenation followed by C−N coupling. This approach enables nitrate salts to be selectively transformed into various oximes (>20 substrates) with excellent conversion (>90 %).
Sudakar Padmanaban   +5 more
wiley   +2 more sources

Decolorization of Ponceau Red 4R with TiO2/ZnO: Effect of calcination temperature and Fe addition

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract The photocatalytic degradation of azo dyes using semiconductor oxides has emerged as a promising strategy for wastewater remediation. In this study, pure, mixed, and Fe‐doped oxide catalysts based on Zinc Oxide and Titanium Dioxide were synthesized and evaluated for the degradation of Ponceau 4R under ultraviolet irradiation.
Stefani Castilhos   +5 more
wiley   +1 more source

Purification and Properties of Polyvinyl Nitrate and Its Compatibility With Solid Oxidizers

open access: yesPropellants, Explosives, Pyrotechnics, Volume 51, Issue 8, Page 1224-1234, August 2026.
ABSTRACT Polyvinyl nitrate (PVN) is a nitrate‐ester energetic binder that can be produced directly from polyvinyl alcohol—a cheap commodity feedstock—thereby offering potential cost and supply‐chain advantages over binders based on nitrocellulose and other specialty polymers.
Stephen Spice   +3 more
wiley   +1 more source

Increasingly conservative N cycling in a wet tropical forest: Litter and stream N concentrations decline over 29 years despite surges from hurricanes

open access: yesJournal of Ecology, Volume 113, Issue 9, Page 2476-2496, September 2025.
Conceptual model integrating short‐ and long‐term responses of N in litterfall and stream water in a wet tropical forest subject to hurricanes. Despite N surges following hurricanes, N cycling becomes more conservative in the absence of frequent hurricanes.
Heather E. Erickson   +3 more
wiley   +1 more source

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