Results 131 to 140 of about 66,905 (286)
European Journal of Inorganic Chemistry, EarlyView.The concept of scorpionate ligands has evolved significantly since the introduction of tris(pyrazolyl)borate. By integrating a biological supramolecular ligand scaffold with the classic scorpionate architecture, researchers have made notable strides in mimicking the active sites of nitrogenase and advancing homogeneous catalysis.
Austin Winfield Medley +1 more
wiley +1 more source
Unexpected Products Isolated From Neptunium Halide Syntheses
European Journal of Inorganic Chemistry, EarlyView.Unanticipated products can crystallize when doing ligand substitution chemistry of NpCl4(DME)2 (DME = 1,2‐dimethoxyethane). Dissolution of NpCl4(DME)2 in CDCl3 can recrystallize the dimer [NpCl3(μ‐Cl)(DME)]2. The presence of hydroxylammonium from oxidation state adjustment can result in the isolation of (NH3OH)2[NpCl6]•3(1,4‐dioxane). The contamination
Megan A. Whitefoot +3 more
wiley +1 more source
Iconicity as the motivation for morphophonological metathesis and truncation in Nigerian Pidgin
Open LinguisticsWe present evidence for iconicity as the motivation for two patterns of morphophonological alternation in Nigerian Pidgin, also known as Naijá. To express an ‘unconventional positive’ in all varieties of Naijá, some nouns with the tone melodies H-L and L-
Akinbo Samuel Kayode +1 more
doaj +1 more source
On the relative chronology of Slavic accentual developments [PDF]
, 2010 Last year Georg Holzer proposed a relative chronology of accentual developments in Slavic (2005). Here I shall compare his chronology with the one I put forward earlier (1975, 1989a, 2003) and discuss the differences. For the sake of convenience, I first
Kortlandt, Frederik H. H.
core
European Journal of Inorganic Chemistry, EarlyView.The preparation of soluble and stable metal M2+ dications only stabilized by weakly coordinating anions, that is, M[WCA]2 salts, is an emerging field that, beyond its fundamental interest, holds promise in reactivity due to the high electrophilicity of the central M2+ center.
Samuel Dagorne +3 more
wiley +1 more source
A Crystalline Ylide‐Stabilized Stibenium Cation
European Journal of Inorganic Chemistry, EarlyView.The isolation of a stibenium cation stabilized by two thiophosphinoyl‐tethered ylide groups is reported. The cation is accessible via salt metathesis of the metalated ylide with SbCl3 and features CSb single bonds, with lone pairs remaining localized at the ylidic carbon atoms.
Daniel Knyszek +4 more
wiley +1 more source
Alkyne metathesis: a comparison with alkene metathesis.
, 2012 Metathesis reactions are a series of catalysed transformations which transpose the atoms in alkenes or alkynes. Alkyne metathesis is closely related to the same reaction for alkenes, and one catalyst that is specific to alkynes was introduced by Schrock (who with Grubbs won the Nobel prize for these discoveries) and is based on tungsten (M=W(OR)3).
openaire +1 more source
Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application
European Journal of Organic Chemistry, EarlyView.Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley +1 more source
European Journal of Organic Chemistry, EarlyView.The total synthesis of the manzamine alkaloid keramamine C (2) in its racemic form was achieved in 5 steps, with ring‐closing metathesis as the key step. The metathesis is strongly improved by an intramolecular H‐bond‐induced conformational fixation of the amide bond, inducing close proximity of the terminal double bonds in the precursor molecule.
Jana Ganzmann +4 more
wiley +1 more source
Emerging Trends in Organic Photoreactions Utilizing Disulfides
European Journal of Organic Chemistry, EarlyView.Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar +3 more
wiley +1 more source