Results 171 to 180 of about 13,651 (294)

Compositional Stages in the Thermal Activation of Metal‐Organic Frameworks in Vacuo: In Situ Spectroscopy and Computation

Chemistry – A European Journal, EarlyView.
The ultrahigh surface area intrinsic to many metal‐organic frameworks (MOFs) may only be accessed after the removal of synthesis solvent from within the pores. This study elucidates the electronic and structural changes undergone through the guest removal process within a commonly used CUS MOF.
George W. Fritze, John W. Robinson, Adam J. Matzger   +2 more
wiley   +1 more source

Mechanism of Isonitrilase, a Nonheme Iron Decarboxylase Involved in the Biosynthesis of the Isonitrile Group in Peptides: A Computational Study

Chemistry – A European Journal, EarlyView.
A combination of molecular dynamics and quantum mechanics calculations shows that substrate is tightly bound inside the enzyme structure that enables two successive catalytic cycles with dioxygen and α‐ketoglutarate with an initial desaturation followed by hydrogen abstraction and decarboxylation steps to form an isonitrile substituent.
Chengxu Zhu, Sam P. de Visser
wiley   +1 more source

Seasonal water use strategies of dominant herbaceous species in a desert steppe revealed by stable isotopes. [PDF]

Front Plant Sci
Zhang B, Ma M, Xue D, Wang H, Gao F, Zhang X, Mureithi SM.   +6 more
europepmc   +1 more source

Exploring the Catalytic Activity of Ge(II) and Sn(II) Cationic Crown Ether Complexes: Hydrosilylation

Chemistry – A European Journal, EarlyView.
Easily synthesized [Ge([12]crown‐4)2][OTf]2 catalyzes the hydrosilylation of aldehydes to give reductively coupled ethers via a carbonyl‐activated reaction pathway. The mechanism proceeds through two distinct steps: hydrosilylation followed by etherification. The open coordination face of the active cationic Ge(II) catalyst facilitates the coordination
Sarah L. McOnie, Johanna M. Blacquiere, Kim M. Baines   +2 more
wiley   +1 more source

Chromium isotope constraints on deep mantle oxidation from the Early Archean to Paleoproterozoic. [PDF]

Nat Commun
Xu LJ, Shen J, Huang S, Liu SA, Liu C, Liu J, Zhu XX, Mo Y, Puchtel IS, Cawood PA, Zhao G.   +10 more
europepmc   +1 more source

A Low‐Oxidation‐State Mechanism for O─O Bond Formation in Photosystem II via Oxo–Hydroxyl Radical Coupling

Chemistry – A European Journal, EarlyView.
An oxo–hydroxyl radical coupling mechanism is identified for O─O bond formation in Photosystem II within the low‐oxidation‐state paradigm. Ca‐bound W3 forms Ox in the S4 state and subsequently couples with O5. The resulting hydroperoxide intermediate provides a mechanistic explanation for the poor resolution of Ox in XFEL structures.
Alireza Ariafard, Matthew Longhurst, Robert Stranger   +2 more
wiley   +1 more source

Unconventional water and hydrous mineral formation from dry minerals and H₂ fluids. [PDF]

Sci Adv
Vitale Brovarone A, Thomassot E, Tumiati S, Siron G, Consuma G, Alpermann T, Ague JJ, Nestola F, Giovannelli D, Sverjensky DA, Toffolo L.   +10 more
europepmc   +1 more source

Chapter 1. Fundamentals of hydrogen and oxygen isotopes in hydrology

Chapter 1. Fundamentals of hydrogen and oxygen isotopes in hydrology
identifier:oai:t2r2.star.titech.ac.jp ...
openaire   +1 more source

A Trans‐1,2‐Diphenyl‐Substituted EDTA Platform for High‐Relaxivity Mn(II) MRI Probes

Chemistry – A European Journal, EarlyView.
Symmetric diphenyl substitution of the EDTA backbone enhances the rigidity of the Mn(II) complex and enables strong multisite interactions, providing a versatile platform for further functionalisation and conjugation towards high‐performance Mn(II)‐based MRI contrast agents.
Federico Forgione, Alessandro Nucera, Marco Ricci, Attila Benyei, Mariangela Boccalon, Zsolt Baranyai, Giovanni B. Giovenzana, Mauro Botta   +7 more
wiley   +1 more source

Comparison of Isotope Mass Balance and AquaCrop Model in Evapotranspiration Partitioning in a Maize Field of North China. [PDF]

Plants (Basel)
Wang J, Wang Z, Chen Z, Wu B, Li G, Li B.   +5 more
europepmc   +1 more source