The Reaction of Hydrogen Cyanide with Sulfuric and Phosphoric Acids

1937 ◽  
Vol 41 (3) ◽  
pp. 351-363 ◽  
Author(s):  
Alan W. Cobb ◽  
James H. Walton
Keyword(s):  
Hydrogen Cyanide ◽  
Phosphoric Acids

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Rotational spectrum and properties of a complex of hydrogen cyanide and chlorine monofluoride

1996 ◽  
Vol 88 (3) ◽  
pp. 673-682 ◽  
Author(s):  
K. HINDS ◽  
A.C. LEGON ◽  
J.H. HOLLOWAY
Keyword(s):  
Hydrogen Cyanide ◽  
Rotational Spectrum

Facile access to benzofuran-fused tetrahydropyridines via catalytic asymmetric [4 + 2] cycloaddition of aurone-derived 1-azadienes with 3-vinylindoles

2021 ◽  
Author(s):  
Wai Lean Koay ◽  
Guang-Jian Mei ◽  
Yixin Lu
Keyword(s):  
Cycloaddition Reaction ◽  
Wide Range ◽  
Catalytic Asymmetric ◽  
Phosphoric Acids

A highly enantioselective [4 + 2] cycloaddition reaction of aurone-derived 1-azadienes with 3-vinylindoles has been developed. In the presence of chiral phosphoric acids, a wide range of benzofuran-fused tetrahydropyridines with...

Frontispiece: Rigidly Tethered Bis-phosphoric Acids: Generation of Tunable Chiral Fluorescent Frameworks and Unexpected Selectivity for the Detection of Ferric Ions

2017 ◽  
Vol 23 (42) ◽  
Author(s):  
Frescilia Octa-Smolin ◽  
Raja Mitra ◽  
Maike Thiele ◽  
Constantin G. Daniliuc ◽  
Linda Stegemann ◽  
...  
Keyword(s):  
Ferric Ions ◽  
Phosphoric Acids

scholarly journals Hydrogen cyanide in comet C/1996 B2 Hyakutake

2002 ◽  
Vol 107 (E11) ◽  
pp. 6-1-6-10 ◽  
Author(s):  
Karen Magee-Sauer ◽  
Michael J. Mumma ◽  
Michael A. DiSanti ◽  
Neil Dello Russo
Keyword(s):  
Hydrogen Cyanide

scholarly journals Generalized Navier–Stokes Equations and Dynamics of Plane Molecular Media

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 288
Author(s):  
Alexei Kushner ◽  
Valentin Lychagin
Keyword(s):  
Carbon Dioxide ◽  
Internal Structure ◽  
Stokes Equation ◽  
Hydrogen Cyanide ◽  
Stokes Equations ◽  
Navier Stokes ◽  
Navier Stokes Equation ◽  
Navier Stokes Equations

The first analysis of media with internal structure were done by the Cosserat brothers. Birkhoff noted that the classical Navier–Stokes equation does not fully describe the motion of water. In this article, we propose an approach to the dynamics of media formed by chiral, planar and rigid molecules and propose some kind of Navier–Stokes equations for their description. Examples of such media are water, ozone, carbon dioxide and hydrogen cyanide.

Preparation of ( R )‐3‐aminopiperidine by resolution with optically active cyclic phosphoric acids

Chirality ◽  
2021 ◽  
Author(s):  
Yujuan Sun ◽  
Beibei Hu ◽  
Yongshuai Jing ◽  
Jialiang Wu ◽  
Maochao Zhou ◽  
...  
Keyword(s):  
Optically Active ◽  
Phosphoric Acids
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