Results 151 to 160 of about 14,101 (268)

Self‐Complementary Dimers Based on Zwitterionic Halogen Bond Donors

Chemistry – A European Journal, EarlyView.
In this study we present the first isolated zwitterionic homodimers based on halogen bonding (XB). After optimization of the structures by changing the Lewis base (LB) and the backbone, their dimerization was observed in gas phase, as well as, in solid state.
Dana Kutzinski, Raffaella Papagna, Elric Engelage, Lianne H. E. Wieske, Mate Erdelyi, Stefan M. Huber   +5 more
wiley   +1 more source

New Re-Os Geochronological Data from the Upper Doushantuo Formation: Age Constraint on the Shuram Excursion and Implication for the Ediacaran Fluctuated Continental Weathering. [PDF]

ACS Omega
Tan Z, Luo J, Xu X, Jia W, Li J, Chen L.
europepmc   +1 more source

Dinuclear Copper(I) Complexes Featuring Metal–Metal Interactions and a μ2‐Bridging Phosphane With Additional Olefinic Binding Sites

Chemistry – A European Journal, EarlyView.
A Cu2P triangle captured in a tetrapodal phosphane tris(olefin) ligand, where all binding forces are weak apart from the Cu─P interaction. ABSTRACT The molecule Ptrop3 contains in each trop unit (trop = dibenzo[a,d]cyclohepten‐5‐yl) a rigid central seven‐membered ring with an olefinic binding site making Ptrop3 potentially a tetradentate ligand ...
Zhongshu Li, Daniel Himmelbauer, Jan Oswald, Michael Wörle, René Verel, Zoltán Benkő, Hansjörg Grützmacher   +6 more
wiley   +1 more source

Astronomically calibrating early Ediacaran evolution. [PDF]

Nat Commun
Zhang T, Ma C, Li Y, Li C, Da Silva AC, Fan T, Gao Q, Kuang M, Liu W, Li M, Hou M.   +10 more
europepmc   +1 more source

The Electronic Spin State of Diradicals Obtained from the Nuclear Perspective: The Strange Case of Chichibabin Radicals

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The electronic spin state of two Chichibabin radicals is investigated using 2‐dimensional hyperfine correlated Electron Nuclear Double Resonance. The protons (I=1/2) act as a reference for the electronic spin quantum number (S) via their hyperfine interactions.
Gabriel Moise, Saleta Fernández, Kit Joll, Mikhail V. Vaganov, Fátima García, Christiane R. Timmel, Diego Peña, Arzhang Ardavan   +7 more
wiley   +1 more source

Paleoproterozoic Mississippi Valley-type mineralization at Black Angel, Greenland: evidence from sulfide δ⁶⁶Zn and rhenium-osmium geochronology. [PDF]

Miner Depos
Saintilan NJ, Archer C, Szilas K, Krüger Geertsen K, Rosa D, Spangenberg JE.   +5 more
europepmc   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Multidisciplinary evidence for synchroneity between Ontong Java Nui volcanism and early Aptian oceanic anoxic event 1a. [PDF]

Sci Adv
Matsumoto H, Shirai K, Ishikawa A, Ohkouchi N, Ogawa NO, Tejada MLG, Ando A, Kuroda J, Suzuki K.   +8 more
europepmc   +1 more source

Combining isotope ratios for provenancing Viking Age iron artefacts in the British Isles: a pilot study. [PDF]

RSC Adv, 2023
Harding SE, Jones C, Evans J, Milot J, Cutajar M, Bailey E, Pashley V, Wagner D, Halkon P, Pearce M.   +9 more
europepmc   +1 more source

Segmental Hair Analysis of Diphenhydramine and Cyclizine Following a Single Dose

Drug Testing and Analysis, EarlyView.
A single oral dose of diphenhydramine and cyclizine can be quantified in human head hair for a minimum of 5 months and, in certain cases, for up to 1 year following intake. Among 12 study participants, the measured concentrations ranged from 0 to 610 pg/mg within 1 year post‐intake.
Jan Bílek, Marie Katrine Klose Nielsen, Robert Kronstrand, Sys Stybe Johansen   +3 more
wiley   +1 more source