Results 261 to 270 of about 767,104 (296)

Current complexity: a tool for assessing the complexity of organic molecules

Organic & Biomolecular Chemistry, 2015
A new complexity index is described, leveraging crowd-sourced knowledge to assess a molecules complexity in the context of current technology.
Jun, Li, Martin D, Eastgate
openaire   +2 more sources

Complexation of small organic molecules by Cu+

Chemical Physics Letters, 1997
Abstract The structure and binding energetics have been computed for the complexes of Cu + with water, hydrogen sulfide, ammonia, formaldehyde, formimine, methanol, methanethiol, methylamine, formic acid and formamide, using ab initio and density functional methods.
Sophie Hoyau, Gilles Ohanessian
openaire   +1 more source

Prebiotic Complex Organic Molecules in Space

2019
As of 2017, about 200 complex organic molecules have been detected in interstellar molecular clouds. It was 1969 when the first organic molecule in space, H2CO, was discovered. Since then many organic molecules were discovered by using the NRAO 11 m (upgraded later to 12 m), Nobeyama 45 m, IRAM 30 m, and other highly sensitive radio telescopes as a ...
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Reductive Elimination of Organic Molecules from Palladium−Diphosphine Complexes

Organometallics, 2005
The effects governing the rate of reductive elimination of dimethyl ether, acetonitrile, vinyl cyanide, and methyl ethanoate from palladium diphosphine complexes were studied by means of a density functional theory method. Energy barriers, computed as the difference in energy between the reactant and the corresponding transition state using H2P(CH2 ...
Zuidema, E., van Leeuwen, P.W.N.M., Bo, C.   +2 more
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Complexes of Molecular Oxygen with Organic Molecules

Russian Chemical Reviews, 1985
Molecular oxygen forms complexes with organic molecules. Evidence for such complex formation and its manifestations are described and criteria are formulated whereby one can distinguish the usual equilibrium complexes from impact (collision) complexes. The principal types of complexes and the electron orbitals with the aid of which the species combined
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Investigation of claims for interstellar organisms and complex organic molecules

Nature, 1984
For many years, Hoyle, Wickramasinghe and their associates have examined interstellar (IS) absorption features in the ultraviolet, visible and infrared and ‘identified’ them with a variety of organic structures or organisms. Among these there have been generalized, pre-biotic molecules1, polyoxymethylene whiskers2, polysaccharides and hydrocarbons3,4 ...
Robert E. Davies, Adelaide M. Delluva, Robert H. Koch   +2 more
openaire   +1 more source

SPECTROSCOPIC INVESTIGATIONS OF INTRAMOLECULAR RELAXATIONS IN ORGANIC COMPLEX MOLECULES

Pure and Applied Chemistry, 1974
Some experimental results referring to vibrational and electronic (vibronic) relaxations in organic complex molecules are considered on the basis of simple models. The fundamental role of normal vibrational interactions is shown in the formation of mixed vibrational and vibronic molecular states, determining the dynamics of the absorbed light energy ...
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Complex organic molecules in outer space

Biological Conservation, 1971
G.W. Swenson, W.H. Flygare
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Cyclohexaamylose complexation with organic solvent molecules

Journal of the American Chemical Society, 1982
Robert I. Gelb, Lowell M. Schwartz, Michael Radeos, Robert B. Edmonds, Daniel A. Laufer   +4 more
openaire   +1 more source

Transition-Metal-Catalyzed Silylation and Borylation of C–H Bonds for the Synthesis and Functionalization of Complex Molecules

Chemical Reviews, 2023
Isaac Furay Yu, Jake Wilson, John F Hartwig   +2 more
exaly