Results 11 to 20 of about 286 (83)

Valence Threshold Photoionization Spectra of C $_5$ H and C $_5$ H $_2$ Isomers. [PDF]

Chemphyschem
Mass‐selected threshold photoelectron spectra (TPES) of l‐C5H, HC5H, and c–C3H‐CCH were recorded using double‐imaging photoelectron‐photoion coincidence spectroscopy. These transient species were generated in situ by hydrogen abstraction from cyclopropylacetylene and 1,3‐pentadiyne.
Jacovella U, Drissi M, Gans B, Rossi C, Garcia GA, Le HL, Jiang M, Guillemin JC, Boyé-Péronne S, Loison JC.   +9 more
europepmc   +2 more sources

From Anti-Van't Hoff Le Bel Molecules of C₆NH to Astronomically Relevant and Experimentally Known and Unknown Carbenes. [PDF]

Chemphyschem
Molecules with a planar tetracoordinate carbon atom serve as reactive intermediates for carbenes. While isomer 2 has been identified in the laboratory, isomer 5 remains elusive to date. Here, four stationary points with a planar tetracoordinate carbon (ptC) atom that are considered as anti‐van't Hoff Le Bel molecules have been computationally ...
Shajan S, Sivadasan D, Thirumoorthy K, Thimmakondu VS.   +3 more
europepmc   +2 more sources

Insights Into the Gas-Phase Structure and Internal Dynamics of Diphenylsilane: A Broadband Rotational Spectroscopy Study. [PDF]

Chemphyschem
The structure of diphenylsilane could be determined from the rotational spectra of all its singly substituted heavy atom isotopologues. A comparison with its oxygen analogue diphenylether revealed some interesting differences in the internal dynamics as well as in the gas‐phase structure.
Batra G, Schnell M.
europepmc   +2 more sources

Spectroscopic Investigation of Thioacrolein by Variational and Perturbational Approaches. [PDF]

J Comput Chem
The vibrational and rotational spectra of trans and cis‐thioacrolein were studied by high levels of electronic and vibrational structure theory. Comparisons with experimental results are provided for several molecular quantities. ABSTRACT The vibrational spectra of trans and cis‐thioacrolein have been studied by 2nd order vibrational perturbation ...
Rauhut G.
europepmc   +2 more sources

Linear or Cyclic? Theoretical Investigation of Astrophysically Relevant Magnesium-Bearing MgC_nH Carbon Chains and Related Isomers. [PDF]

J Comput Chem
The global minimum energy structure of astrophysically relevant MgCnH systems is linear when n is even, and cyclic when n is odd. ABSTRACT Magnesium‐containing molecules, including MgC2H, MgC4H, and MgC6H, have been detected in the interstellar medium, largely facilitated by their high dipole moments.
Gomes AKMS, Oliveira RR, Cardozo TM, Fantuzzi F.   +3 more
europepmc   +2 more sources

UV-Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H₂CO₃)_n Calculations. [PDF]

Chemphyschem
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dinu DF, Klein B, Zhang C, Talmazan RA, Loerting T, Grothe H, Kaiser RI, Podewitz M.   +7 more
europepmc   +2 more sources

The Pentafluorophenyl Cation: A Superelectrophile and Diradical

Angewandte Chemie, Volume 137, Issue 39, September 22, 2025.
From radical to diradical cation. Photoionization (PI) of the thermally generated pentafluorophenyl radical yields the pentafluorophenyl cation in the gas phase. This cation is found to be a diradical with nearly degenerate open‐shell singlet and triplet ground states, and it is even more unstable than the parent phenyl cation by ∼40 kcal mol−1 ...
Enrique Mendez‐Vega, Adrián Portela‐González, Ginny Karir, Patrick Hemberger, Wolfram Sander   +4 more
wiley   +2 more sources

Thin‐film lithium niobate photonics: Frontiers in millimeter‐wave and terahertz generation and integrated applications

InfoScience, EarlyView.
With the advancement of 6G communications, high‐precision radar, and advanced imaging technologies, there is a growing demand for compact, high‐performance light sources capable of generating high‐frequency radio waves (millimeter‐wave and terahertz waves). This article systematically introduces how to efficiently generate these high‐frequency waves on
Jianfeng Xiong, Zhenyu Wang, Xu Li, Guo Tang, Sizhe Wang, Jiyuan Huang, Guochao Wang, Shuhua Yan, Wenzhao Sun   +8 more
wiley   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source