Results 1 to 10 of about 87 (86)
A persistent influence of supernovae on biodiversity over the Phanerozoic. [PDF]
Ecol Evol, 2023 It shows the correlation between diversity and supernovae frequency. Abstract It is an open question what has constrained macroevolutionary changes in marine animal diversity on the time scale of the Phanerozoic. Here, we will show that supernovae appear to have significantly influenced the biodiversity of life.
Svensmark H.
europepmc +2 more sources
ChemPlusChem, Volume 88, Issue 12, December 2023., 2023 Large modifications of light emission of benzofuran‐cyanostilbene derivatives in the solid state can be achieved through the insertion of methoxy groups or the extension of benzofuran units, thus making it possible to access a whole range of emission spectra, which present excitonic or excimeric contributions depending on the stacking modes of the ...
Jihad Abdo +4 more
wiley +1 more source
Comparative study of conventional and synchrotron X‐ray electron densities on molecular crystals
Acta Crystallographica Section B, Volume 79, Issue 5, Page 380-391, October 2023., 2023 Four electron density quality single crystal X‐ray diffraction datasets on molecular crystals of melamine were obtained from both state‐of‐the‐art laboratory instruments (Rigaku Synergy with Ag Kα and Mo Kα, Stoe Stadivari with Mo Kα) and an older X‐ray diffractometer (Oxford Diffraction Supernova with Mo Kα) and the data quality and electron density ...
Emilie S. Vosegaard +3 more
wiley +1 more source
Coordination chemistry of pnictogenylboranes towards group 6 transition metal Lewis acids
Zeitschrift für anorganische und allgemeine Chemie, Volume 649, Issue 4, February 13, 2023., 2023 Abstract The coordination behavior of different pnictogenylboranes towards group 6 metal Lewis acids is investigated. The resulting complexes with phosphanylboranes [(CO)4M(PH2BH2 ⋅ NMe3)2] (M=Cr, Mo, W; 1–3), arsanylboranes ([(CO)4M(AsH2BH2 ⋅ NMe3)2] (M=Cr, Mo, W; 4–6) and tBu‐substituted phosphanylboranes [(CO)4M(tBuPHBH2 ⋅ NMe3)2] (M=Cr, W; 7–8) are
Felix Lehnfeld +4 more
wiley +1 more source
Chemistry – A European Journal, Volume 27, Issue 22, Page 6783-6794, April 16, 2021., 2021 Anticancer NHC complexes: RhI and IrI N‐heterocyclic carbene (NHC) complexes provide an auspicious class of potential new anticancer agents; however, cellular imaging with luminescent derivatives of these complex types is often hampered by luminescence quenching.
Isabelle Marie Daubit +5 more
wiley +1 more source
Molecular Ecology Resources, Volume 21, Issue 1, Page 263-286, January 2021., 2021 Abstract Genome assemblies are currently being produced at an impressive rate by consortia and individual laboratories. The low costs and increasing efficiency of sequencing technologies now enable assembling genomes at unprecedented quality and contiguity.
Valentina Peona +11 more
wiley +1 more source
European Journal of Inorganic Chemistry, Volume 2020, Issue 35, Page 3347-3358, September 22, 2020., 2020 Despite suitable redox potentials and positively charged ligand periphery, Fe and Co pentagonal‐bipyramidal complexes of 2,2'‐[2,6‐pyridinediylbis(ethylidyne‐1‐hydrazinyl‐2‐ylidene)]bis[N,N,N‐trimethyl‐2‐oxoethanaminium] do not possess SOD activity, whereas the Cu square‐pyramidal complex exhibits a quite high SOD catalytic rate constant, determined by
Marko Stojičkov +12 more
wiley +1 more source
Chemistry – A European Journal, Volume 26, Issue 15, Page 3335-3347, March 12, 2020., 2020 Two isostructural ligands with either nitrile (Lnit) or isonitrile (Liso) moieties attached to a [2.2]paracyclophane backbone have been synthesized. Surprisingly, the resulting discrete metallosupramolecular aggregates formed in solution upon coordination of [(dppp)Pd(OTf)2] differ in their composition and in their chiral self‐sorting behavior.
Lucia Volbach +8 more
wiley +1 more source
Phosphazene Base Mediated (sp3)CH Functionalization with CO2 and CS2
European Journal of Inorganic Chemistry, Volume 28, Issue 24, August 29, 2025.Selective deprotonation of HCF3, HC2F5, and CH3CN by the phosphazene base EtP4 in the presence of CO2 or CS2 affords the phosphazenium carboxylates [EtP4H]+[F3CCO2]− and [EtP4H]+[F5C2CO2]−, as well as the corresponding dithiocarboxylates [EtP4H]+[F3CCS2]− and [EtP4H]+[F5C2CS2]−.
Katharina Wels +4 more
wiley +1 more source
Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement
Advanced Science, Volume 12, Issue 29, August 7, 2025.A direct asymmetric strategy for fulfilling the functional group transfer by aryl ether cleavage and migration is developed, representing the first Brønsted base‐catalyzed asymmetric [1,3]‐sigmatropic rearrangement reaction. The resulting chiral benzofuran products generated through this strategy exhibit significant 3D‐dimensionality and demonstrate ...
Lei Peng +7 more
wiley +1 more source