Results 11 to 20 of about 2,748 (180)
Cu-Ln (Ln = Gd, Eu, Sm) Dinuclear Complexes Based on Schiff Base o-van-en Ligand: Syntheses, Crystal Structures, and Magnetic Properties. [PDF]
ChemistryThree 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.
Koščíková A +6 more
europepmc +2 more sources
Charge Makes a Difference: Molecular Ionic Bismuth Compounds
Angewandte 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
Identifying the Thermodynamic Driving Force of Metal Extraction by Hydrophobic Eutectic Solvents. [PDF]
ChemSusChemSolvent 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 ...
Vaz ICM +11 more
europepmc +2 more sources
European 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
Agronomy 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
Chemistry – 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
Terminal Au−N and Au−O Units in Organometallic Frames
Chemistry – A European Journal, Volume 29, Issue 8, February 7, 2023., 2023 Landscape beyond the oxo‐wall. The terminal auronitrene and auroxyl species [(CF3)3AuN]− and [(CF3)3AuO]− are identified as local minima by calculation and experimentally detected by tandem mass spectrometry (MS2) in the gas phase. These open‐shell species defy the standard rules to assign oxidation states since the unpaired electrons are located on ...
Alberto Pérez‐Bitrián +6 more
wiley +1 more source
Ambiente, 2012 O objetivo desse estudo foi investigar as características fotossintéticas em plantas jovens de Inga edulis submetidas a fontes de NH 4 e NO 3 . O estudo foi conduzido em casa de vegetação no INPA (3o 05'30''S e 59o 59'36''W). Plantas de I.
Cristiane Santos do Carmo Ribeiro de Souza +4 more
doaj +1 more source
Nitrate Upcycling Mediated by Organonickel Catalysis
Angewandte 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
Revista Brasileira de Ciência do Solo, 2009 O teor de N disponível em solos tratados com lodo de esgoto é um dos fatores restritivos à aplicação do resíduo em grandes volumes na agricultura, e deve ser utilizado nas normas que regulamentam seu uso agrícola com o fim de evitar a contaminação ...
Rita Carla Boeira +1 more
doaj +1 more source