Results 31 to 40 of about 312,846 (164)

Computational and Spectroscopic Investigation of Diaminomethane Formation: The Simplest Geminal Diamine of Astrochemical Interest

open access: yesAtoms
A high-level ab initio characterization and formation of diaminomethane (DAM), the simplest geminal diamine, is presented to support its spectroscopic detection and astrochemical relevance in the interstellar medium.
Pravi Mishra   +8 more
doaj   +1 more source

Chemical Evolution of Some Selected Complex Organic Molecules in Low-mass Star-forming Regions

open access: yesThe Astrophysical Journal, 2023
The destiny of complex organic molecules (COMs) in star-forming regions is interlinked with various evolutionary phases. Therefore, identifying these species in diversified environments of identical star-forming regions would help to understand their ...
Bratati Bhat   +8 more
doaj   +1 more source

Fast prediction of anharmonic vibrational spectra for complex organic molecules

open access: yesnpj Computational Materials
Interpreting Raman and IR vibrational spectra in complex organic molecules lacking symmetries poses a formidable challenge. In this study, we propose an innovative approach for simulating vibrational spectra and attributing observed peaks to molecular ...
Mattia Miotto, Lorenzo Monacelli
doaj   +1 more source

Preparation of Acetylenediol (HOCCOH) and Glyoxal (HCOCHO) in Interstellar Analog Ices of Carbon Monoxide and Water

open access: yesThe Astrophysical Journal
Enols—tautomers of ketones or aldehydes—are considered key intermediates in the formation of prebiotic sugars and sugar acids. Although laboratory simulation experiments suggest that enols should be ubiquitous in the interstellar medium, the underlying ...
Jia Wang   +8 more
doaj   +1 more source

One-dimensional and time-dependent modelling of complex organic molecules in protostars

open access: yesAstronomy & Astrophysics
Complex organic molecules (COMs), the building blocks of life, have been extensively detected under various physical conditions, from quiescent clouds to star-forming regions.
Tram Le Ngoc   +7 more
doaj   +1 more source

Near-UV Spectrum of the Hexamethylenetetramine Cation

open access: yesThe Astrophysical Journal
Hexamethylenetetramine (HMT; (CH _2 ) _6 N _4 ) is a complex cage-like molecule that forms by the reaction of ammonia with formaldehyde, two of the most prevalent components of ice mantles on interstellar dust grains.
Parker Crandall   +3 more
doaj   +1 more source

Organic material in meteorites and the link to the origin of life

open access: yesBIO Web of Conferences, 2014
Life requires specific conditions that have been, so far, only proven to meet on Earth. Though the chemical elements required to form living organism (C, H, N, O, S, etc) are widespread in the universe, the molecules that are crucial for Life, like ...
Remusat L.
doaj   +1 more source

Digging into the Chemical Complexity in the Outer Galaxy: A Hot Molecular Core in Sh 2-283

open access: yesThe Astrophysical Journal
The outer Galaxy (Galactocentric distance ≳13.5 kpc) serves as an excellent laboratory for investigating the chemical complexity in low-metallicity environments.
Toki Ikeda   +5 more
doaj   +1 more source

Carbon Isotope Fractionation of Complex Organic Molecules in Star-forming Cores

open access: yesThe Astrophysical Journal
Recent high-resolution and sensitivity Atacama Large Millimeter/submillimeter Array observations have unveiled the carbon isotope ratios ( ^12 C/ ^13 C) of complex organic molecules (COMs) in a low-mass protostellar source. To understand the ^12 C/ ^13 C
Ryota Ichimura   +2 more
doaj   +1 more source

Bis(2-methoxybenzylammonium) diaquabis(dihydrogen diphosphato-κ2O,O′)cobaltate(II) dihydrate

open access: yesActa Crystallographica Section E, 2014
The title compound, (C8H12NO)2[Co(H2P2O7)2(H2O)2]·2H2O, crystallizes isotypically with its MnII analogue. It consists of alternating layers of organic cations and inorganic complex anions, extending parallel to (100).
Adel Elboulali   +4 more
doaj   +1 more source

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