Results 21 to 30 of about 1,812 (177)

Rydberg-State Double-Well Potentials of Van der Waals Molecules

open access: yesMolecules
Recent progress in studies of Rydberg double-well electronic energy states of MeNg (Me = 12-group atom, Ng = noble gas atom) van der Waals (vdW) molecules is presented and analysed. The presentation covers approaches in experimental studies as well as ab
Tomasz Urbańczyk   +3 more
doaj   +1 more source

High-Resolution Spectroscopy of High Rydberg States: Chemical and Technological Applications

open access: yesCHIMIA, 2000
High Rydberg states of atoms and molecules possess unusual properties that can be exploited in chemistry and technology. The extreme sensitivity of these states to external influences makes them ideal probes of their environment and they can be ...
Frédéric Merkt
doaj   +2 more sources

Potassium‐Ligand Cooperation Facilitated Chemical Bond Activation and Catalytic Hydrogenation

open access: yesAngewandte Chemie, Volume 138, Issue 28, 6 July 2026.
A new strategy for alkali metal‐mediated catalysis based on metal–ligand cooperation (MLC) is presented. Potassium pincer complexes exhibit remarkable reactivity toward a range of molecules via an unprecedented potassium–ligand cooperative mechanism. This reactivity enables potassium‐catalyzed hydrogenation, providing efficient reduction of ketones and
Yaoyu Liang   +6 more
wiley   +2 more sources

Charge-Transfer-Induced Predissociation in Rydberg States of Molecular Cations: MgAr+

open access: yesThe Journal of Physical Chemistry A, 2021
Published by Soc., Washington ...
Wehrli, Dominik   +4 more
openaire   +4 more sources

Precision Measurements of Ionization and Dissociation Energies by Extrapolation of Rydberg Series: From H2 to Larger Molecules

open access: yesCHIMIA, 2013
Recent experiments are reviewed which have led to the determination of the ionization and dissociation energies of molecular hydrogen with a precision of 0.0007 cm–1 (8 mJ/mol or 20 MHz) using a procedure based on high-resolution spectroscopic ...
D. Sprecher, M. Beyer, F. Merkt
doaj   +1 more source

Two-dimensional spectroscopy of Rydberg gases

open access: yesNew Journal of Physics, 2020
Two-dimensional (2D) spectroscopy uses multiple electromagnetic pulses to infer the properties of a complex system. A paradigmatic class of target systems are molecular aggregates, for which one can obtain information on the eigenstates, various types of
K Mukherjee   +4 more
doaj   +1 more source

Enhancing spin squeezing using soft-core interactions

open access: yesPhysical Review Research, 2023
We propose a protocol for preparing spin squeezed states in controllable atomic, molecular, and optical systems, with particular relevance to emerging optical clock platforms compatible with Rydberg interactions.
Jeremy T. Young   +4 more
doaj   +1 more source

The mechanism of labor in nonhuman primates: A look inside

open access: yesThe Anatomical Record, EarlyView.
Abstract While in humans, the flexed position of the fetus and its rotating course down the birth canal are well documented, in other primates the mechanism of labor is unknown. Despite the lack of comparative data, it is commonly assumed that the human obstetric mechanism is unique, and anthropologists have disputed when and why the transition to the ...
Melissa K. Stoller
wiley   +1 more source

Autoionizing doubly-excited states of 3Σg− symmetry of H2

open access: yesEPJ Web of Conferences, 2015
We report R-matrix calculations of doubly-excited 3Σg− states of molecular hydrogen corresponding to 3d̃πnℓ̃π configurations. These states form Rydberg series converging to the 3d̃π series limit.
Argoubi F., Telmini M., Jungen Ch.
doaj   +1 more source

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

open access: yesChemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola   +2 more
wiley   +1 more source

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