Results 111 to 120 of about 91,095 (298)
Chemistry – A European Journal, EarlyView.Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola +2 more
wiley +1 more source
Thermal behaviour of binuclear cyclopalladated compounds containing anionic azo-ligands
, 2002 This paper deals with the thermal behavior study of cyclopalladated complexes obtained from reactions of [Pd(dmba)N3l2 (1), dmba = N,N-dimethylbenzylamine, with azole-compunds, such as, the anionic ligands pyrazolate (pz), imidazolate (imz) and 3.5 ...
Mauro, Antonio Eduardo [UNESP] +2 more
core
Chemistry – A European Journal, EarlyView.The energy level diagrams for the ν(C═O) and the δ(N─H) vibrations, resulting of combining in‐phase and out‐of‐phase modes on the basis of their local symmetries, was built by applying the exciton coupling theory to a new class of chiral macrocycles, based on the 2,5‐diaminoterephthalate scaffold.
Samara Medina +4 more
wiley +1 more source
Revista Colombiana de Educación, 1979 La Investigación en Docencia de la Química se ha introducido en la formación del futuro docente como una componente indispensable en la estructuración de un pensamiento creador e investigador.ObjetivosAdquirir las técnicas generales de investigación.Desarrollar un diseño de investigaciones.
openaire +3 more sources
Ir Complexes With Mixed‐Valent Bidentate Ligands: From Complex Synthesis to Catalytic Application
Chemistry – A European Journal, EarlyView.ABSTRACT The bidentate ligands Ph2P(E)NHPPh2 (E = S, Se) feature phosphorous atoms in two different oxidation states and provide the potential to tune chemical reactivity through the choice of donor E. The mononuclear complexes [Ir(COD){κ2‐P,E‐Ph2P(E)NPPh2}] (E = S 1a, Se 1b) were prepared from the dimer [IrClCOD]2 (COD = 1,5‐cyclooctadiene) and the ...
C. Gabriela Morales Salas +4 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Naphthalene diimide–N‐heterocyclic carbene iridium complexes display uncommon multistimuli‐responsive behavior combining strong Cl(lp)···π interactions, ligand non‐innocence, visible‐light photoreduction, and conPET photocatalysis. The study also provides new insight into the interaction of NDI platforms with fluoride/basic anions, revealing unexpected
Maite Silva‐Muñoz +2 more
wiley +1 more source
, 2002 In this work, welded Au alloy joints, used for prosthesis supported by implants, have been studied before and after to laser welding processes. A refined dendritic microstructure was observed in the welding area.
Dos Santos, Márcio Luiz [UNESP] +3 more
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Chemistry – A European Journal, EarlyView.Captured in water. A tetrasulfonated deep‐cavity calix[4]arene encapsulates linear and cyclic alkanes, as well as benzene and hexafluorobenzene, in water by forming a self‐assembled dimeric capsule. The binding affinity is guest size‐dependent. For linear alkanes, the affinity peaks at n‐hexane, while cyclooctane is the most strongly bound cycloalkane.
Nico Schneider +5 more
wiley +1 more source
A Naphthalenediimide–Imidazolium Macrocycle for Orthogonal Molecular Recognition
Chemistry – A European Journal, EarlyView.One host, two recognition modes: a naphthalenediimide–imidazolium macrocycle switches between π‐driven encapsulation and hydrogen‐bonding to bind structurally diverse molecular and metal‐complex guests. ABSTRACT A naphthalenediimide‐imidazolium macrocycle is shown to function as a dual‐site supramolecular host for orthogonal molecular recognition.
Joel Martínez‐Visiedo +2 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Strategic electronic matching between imidazolium salts and aryldiazonium salts enables a chromatography‐free route to versatile azoimidazolium scaffolds. Fine‐tuning the substituents unveils a powerful dichotomy: strong ─OMe resonance stabilizes highly persistent neutral aminyl radicals (up to 3 weeks), whereas the superior ─NMe2 donor strength yields
Diego Dusso +6 more
wiley +1 more source