Results 151 to 160 of about 1,197 (262)

Coastal land uplift and intensified land-use influence seagrass carbon and nitrogen sink capacity over millennial timescales. [PDF]

Sci Rep
Dahl M, Braun S, Asplund ME, Björk M, Kaal J, Linderholm HW, Andrén E, Andrén T, Ežerinskis Ž, Faizal MV, Forsberg SC, Garbaras A, Kylander ME, Masqué P, Mateo MA, Šapolaitė J, Serrano O, Svensson JR, Vinogradova O, Gullström M.   +19 more
europepmc   +1 more source

Alkali‐Metal Base Catalyzed Electrocyclization of Isoprene Derivatives

Chemistry – A European Journal, EarlyView.
Simple and abundant alkali‐metal base catalysis in combination with Lewis basic polyamines enables the electrocyclization of isoprene‐derived trienes to cycloheptadienes under neat conditions. Mechanistic insight supported by DFT guides a scalable route to seven‐membered carbocycles which, after reduction, give saturated cycloalkanes relevant as ...
Mikaël Le Roch, Krzysztof Piech, Aurélien Crochet, Andreu Tortajada   +3 more
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

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

Reply to: Reassessing gas generation from oil thermal cracking associated with the Emeishan Large Igneous Province. [PDF]

Nat Commun
Chen C, Qin S, Wang Y, Holland G, Wynn P, Zhong W, Zhou Z.   +6 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

Dating diamonds using the Re - Os isotope technique: a study of sulfide inclusions in Siberian diamonds

International Kimberlite Conference Extended Abstracts: 1998, 2019
openaire   +2 more sources

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

A revised radiocarbon chronology for the mammoth bone structures and associated features at Mezhyrich, Ukraine. [PDF]

Open Res Eur
Chu W, Shydlovskyi P, Maier A.
europepmc   +1 more source

Breaking the Mold: Electrophilic Hydrophosphanation Emerges

Chemistry – A European Journal, EarlyView.
Electrophilic hydride attack on the olefin, instead of the classical nucleophilic addition by a phosphanido ligand, is unveiled in rhodium‐catalyzed olefin hydrophosphanation. This hydride‐driven pathway operates for both activated and inactivated olefins, with transition states characterized by elongated Rh─H bonds and nascent C─H bond formation ...
Víctor Varela‐Izquierdo, Janeth Navarro, Judit Cano‐Asensio, José A. López, Cristina Tejel   +4 more
wiley   +1 more source