Systems chemical analytics: introduction to the challenges of chemical complexity analysis

We present concepts of complexity, and complex chemistry in systems subjected to biotic and abiotic transformations, and introduce analytical possibilities to disentangle chemical complexity into its elementary parts as a global integrated approach termed systems chemical analytics.

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The Influence of CO2 Admixtures on Process in Titan's Atmospheric Chemistry

Plasma Physics and Technology Journal ◽

10.14311/ppt.2016.3.163 ◽

2016 ◽

Vol 3 (3) ◽

pp. 163-167

Author(s):

L. Torokova ◽

V. Mazankova ◽

N. J. Mason ◽

F. Krcma ◽

G. Morgan ◽

...

Keyword(s):

Glow Discharge ◽

Atmospheric Chemistry ◽

Hydrogen Cyanide ◽

Planetary Atmosphere ◽

Atmospheric Processes ◽

Chemical Complexity ◽

Discharge Gas ◽

Complex Chemistry ◽

Life On Earth

The exploration of planetary atmosphere is being advanced by the exciting results of the Cassin-Huygens mission to Titan. The complex chemistry revealed in such atmospheres leading to the synthesis of bigger molecules is providing new insights into our understanding of how life on Earth developed. In our experiments Titan's atmosphere is simulated in a glow discharge formed from a mixture of N2:CH4:CO2 gas. Samples of the discharge gas were analysed by GC-MS and FTIR. The major products identified in spectra were: hydrogen cyanide, acetylene and acetonitrile. The same compounds were detected in the FTIR: hydrogen cyanide, acetylene and ammonia. Whilst many of these compounds have been predicted and/or observed in the Titan atmosphere, the present plasma experiments provide evidence of both the chemical complexity of Titan atmospheric processes and the mechanisms by which larger species grow prior to form the dust that should cover much of the Titan's surface.

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The Fedorov–Groth law revisited: complexity analysis using mineralogical data

Acta Crystallographica Section A Foundations and Advances ◽

10.1107/s2053273320004209 ◽

2020 ◽

Vol 76 (3) ◽

pp. 429-431 ◽

Cited By ~ 2

Author(s):

Sergey V. Krivovichev ◽

Vladimir G. Krivovichev

Keyword(s):

Complexity Analysis ◽

Point Group ◽

Complex Compounds ◽

Chemical Information ◽

Higher Symmetry ◽

Chemical Complexity ◽

Lower Symmetry

The Fedorov–Groth law points out that, on average, chemical simplicity corresponds to higher symmetry, and chemically complex compounds usually have lower symmetry than chemically simple compounds. Using mineralogical data, it is demonstrated that the Fedorov–Groth law is valid and statistically meaningful, when chemical complexity is expressed as the amount of Shannon chemical information per atom and the degree of symmetry as the order of the point group of a mineral.

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