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*  Aromaticity
Aromatization Aromatic hydrocarbon Aromatic amine Simple aromatic ring Pi interaction Avoided crossing Aromatic ring current ... Chlorophyll also has a similar aromatic system. Aromatic compounds are important in industry. Key aromatic hydrocarbons of ... Polycyclic aromatic hydrocarbons are molecules containing two or more simple aromatic rings fused together by sharing two ... Aromatic compounds undergo electrophilic aromatic substitution and nucleophilic aromatic substitution reactions, but not ...
*  Persistent organic pollutant
Since 2001, this list has been expanded to include some polycyclic aromatic hydrocarbons (PAHs), brominated flame retardants, ... Aromatic and aliphatic degradation products have been identified in these reactions. Photochemical degradation is negligible ...
*  2,3,7,8-Tetrachlorodibenzodioxin
8-Tetrachlorodibenzo-p-dioxin and related halogenated aromatic hydrocarbons: examination of the mechanism of toxicity". Annu. ... These polycyclic hydrocarbons also activate the AH receptor, but less than TCDD and only temporarily. Even many natural ... TCDD and dioxin-like compounds act via a specific receptor present in all cells: the aryl hydrocarbon (AH) receptor. This ... Mandal PK (May 2005). "Dioxin: a review of its environmental effects and its aryl hydrocarbon receptor biology". J. Comp. ...
*  Aromatic hydrocarbon
Polycyclic aromatic hydrocarbons (PAHs) are aromatic hydrocarbons that consist of fused aromatic rings and do not contain ... An aromatic hydrocarbon or arene (or sometimes aryl hydrocarbon) is a hydrocarbon with sigma bonds and delocalized pi electrons ... "Polycyclic Aromatic Hydrocarbons (PAHs)". Agency for Toxic Substances and Disease Registry. 1996. Media related to Aromatic ... after the simplest possible such hydrocarbon, benzene. Aromatic hydrocarbons can be monocyclic (MAH) or polycyclic (PAH). Some ...
*  Polycyclic aromatic hydrocarbon
Polycyclic aromatic hydrocarbons (PAHs, also polyaromatic hydrocarbons or polynuclear aromatic hydrocarbons) are hydrocarbons- ... Polycyclic Aromatic Hydrocarbon Fact Sheet Understanding Polycyclic Aromatic Hydrocarbons NASA Spitzer Space Telescope ... Dipple, A. (1985). "Polycyclic Aromatic Hydrocarbon Carcinogenesis". Polycyclic Hydrocarbons and Carcinogenesis. ACS Symposium ... "The Chemistry and Analysis of the Large Polycyclic Aromatic Hydrocarbons". Polycyclic Aromatic Compounds. New York: Wiley. 27 ( ...
*  Thermal rearrangement of aromatic hydrocarbons
Thermal rearrangements of aromatic hydrocarbons have been shown to be important in areas of chemical research and industry ... Thermal rearrangements of aromatic hydrocarbons are considered to be unimolecular reactions that directly involve the atoms of ... Thermal rearrangements of aromatic hydrocarbons are generally carried out through flash vacuum pyrolysis (FVP). In a typical ... Many of the polycyclic aromatic hydrocarbons known to be tumorigenic or mutagenic are found in atmospheric aerosols, which is ...
*  Chlorinated polycyclic aromatic hydrocarbon
Chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) are a group of compounds comprising polycyclic aromatic hydrocarbons ... "Relative Potencies of Individual Chlorinated and Brominated Polycyclic Aromatic Hydrocarbons for Induction of Aryl Hydrocarbon ... Chlorinated polycyclic aromatic hydrocarbons are generated by combustion of organic compounds. Cl-PAHs enter the environment ... One of the well-established mechanisms by which chlorinated polycyclic aromatic hydrocarbons can exert their toxic effects is ...
*  Olympicene
Cook, J. W. (1931). "CCCL.-Polycyclic aromatic hydrocarbons. Part VI. 3 : 4-Benzphenanthrene and its quinone". J. Chem. Soc.: ... Olympicene has 18 pi electrons in its ring system; as it is a flat molecule, this makes it an aromatic molecule. The central ... The structure of overcrowded aromatic compounds. Part VI. The crystal structure of benzo[c]phenanthrene and of 1,12- ... ring is not an aromatic ring. A very similar molecule (benzo[c]phenanthrene) which lacks the -CH2- spacer between the two sides ...
*  CI chondrite
polycyclic aromatic hydrocarbons. The ferromagnesian minerals are isolated and show no signs of alteration. As concerns the ...
*  List of environmental issues
Polycyclic aromatic hydrocarbons • Radioactive contamination • Volatile organic compounds Waste - Electronic waste • Great ... Hydrocarbons • Perchlorate • Pesticides • PBDE • Persistent organic pollutant • PBBs • PBDEs • Toxic heavy metals • PCB • ...
*  RAVEN (Respecting Aboriginal Values & Environmental Needs)
... hydrocarbons • and polycyclic aromatic hydrocarbons • other acute and chronic toxicants In many cases, huge ponds sit with very ... silt and clay mixed with leftover hydrocarbons and other toxic substances. Tailings are being created at a rate of 2,000 or so ...
*  Theoretical astronomy
... aliphatic and aromatic hydrocarbons; sulfonic and phosphonic acids; amino, hydroxycarboxylic, and carboxylic acids; purines and ... has revealed that the interstellar medium contains a suite of complex gas-phase carbon compounds called aromatic hydrocarbons, ...
*  Biodegradable polythene film
"Microbes biodegrade aromatic hydrocarbons". Biosphere Plastic. Retrieved 2011-05-20. http://www.ows.be/news/oxo-degradable- ...
*  DART ion source
from polynuclear aromatic hydrocarbons. Fragmentation may occasionally be observed for some molecules. Multiple-charge ions and ... Cody, Robert B.; Dane, A. John (2013). "Soft Ionization of Saturated Hydrocarbons, Alcohols and Nonpolar Compounds by Negative- ...
*  Hexacene
6, 1112-1121 (1939). Clar, E. Aromatic hydrocarbons. XXIV. Hexacene, a green simple hydrocarbon. Ber. Dtsch. Chem. Ges. B 72B, ... Hexacene is an aromatic molecule consisting of six linearly-fused benzene rings. Hexacene and its derivatives are investigated ...
*  Hexamethylbenzene
Pampaloni, Guido (2010). "Aromatic hydrocarbons as ligands. Recent advances in the synthesis, the reactivity and the ... The molecule is aromatic and avoids exceeding the octet on carbon by having only a total of six electrons in the five bonds ... It is an aromatic compound, with six π electrons (satisfying Hückel's rule) delocalised over a cyclic planar system; each of ... Just as with benzene itself, the electron-rich aromatic system in hexamethylbenzene allows it to act as a ligand in ...
*  Polycyclic compound
In general, the term polycyclic includes polycyclic aromatic compounds, including polycyclic aromatic hydrocarbons, as well as ... heterocyclic aromatic compounds with multiple rings (where heteroaromatic compounds are aromatic compounds that contain sulfur ... nitrogen, oxygen, or another non-carbon atoms in their rings in addition to carbon). Polycyclic aromatic hydrocarbon. ... aromatics-, and other ring types. They come in sizes of three atoms and upward, and in combinations of linkages that include ...
*  Fluidized bed combustion
However, burning at low temperatures also causes increased polycyclic aromatic hydrocarbon emissions. FBC boilers can burn ... and polycyclic aromatic hydrocarbons emissions.[citation needed] Commercial FBC units operate at competitive efficiencies, cost ...
*  Cunninghamella
"Biodegradation of polycyclic aromatic hydrocarbons". Biodegradation. 3 (2-3): 351-368. doi:10.1007/BF00129093. Aryl hydrocarbon ... Many species are also capable of oxidizing polycyclic aromatic hydrocarbons, a class of stable organic molecules that tends to ...
*  Molecular solid
Harvey, G. R. (1991). Polycyclic Aromatic Hydrocarbons: Chemistry and Carcinogenicity. Cambridge, UK: Cambridge University ...
*  Tetraphenylethylene
Lewis, Irwin C.; T. Edstrom (1963). "Thermal Reactivity of Polynuclear Aromatic Hydrocarbons". The Journal of Organic Chemistry ... Inaba, S (1982). "Metallic nickel as a reagent for the coupling of aromatic and benzylic halides". Tetrahedron Letters. 23 (41 ...
*  Coronene
... (also known as superbenzene) is a polycyclic aromatic hydrocarbon (PAH) comprising six peri-fused benzene rings. Its ... Fetzer, J. C. (2000). The Chemistry and Analysis of the Large Polycyclic Aromatic Hydrocarbons. New York: Wiley. Karpatite. ... A related compound lacking the central core: cyclooctadecanonaene A larger polycyclic aromatic hydrocarbon with the same ... Mackay, D.; Shiu, W. Y. (1977). "Aqueous solubility of polynuclear aromatic hydrocarbons". Journal of Chemical & Engineering ...
*  Benzopyrene
In February 2014, NASA announced a greatly upgraded database for tracking polycyclic aromatic hydrocarbons (PAHs), including ... They belong to the chemical class of polycyclic aromatic hydrocarbons. Related compounds include cyclopentapyrenes, ... "Polycyclic aromatic hydrocarbons in grilled food". J Agric Food Chem. 31 (4): 867-873. doi:10.1021/jf00118a049. PMID 6352775. ... Benzopyrene is a component of pitch and occurs together with other related pentacyclic aromatic species such as picene, ...
*  Organic chemistry
Aromatic hydrocarbons contain conjugated double bonds. This means that every carbon atom in the ring is sp2 hybridized, ... alkynes (acetylenes): aliphatic hydrocarbons which have one or more triple bonds. The rest of the group is classed according to ... The aliphatic hydrocarbons are subdivided into three groups of homologous series according to their state of saturation: ... The purine nucleoside bases are notable polycyclic aromatic heterocycles. Rings can also fuse on a "corner" such that one atom ...
*  Simple aromatic ring
Polycyclic aromatic hydrocarbons (PAH) Clayden, J.; Greeves, N.; Warren, S.; Wothers, P. (2001). Organic Chemistry. Oxford, ... Simple aromatic rings, also known as simple arenes or simple aromatics, are aromatic organic compounds that consist only of a ... and non-basic aromatic rings. In the basic aromatic rings, the lone pair of electrons is not part of the aromatic system and ... containing aromatic rings can be separated into basic aromatic rings that are easily protonated, and form aromatic cations and ...
*  Black yeast
Prenafeta-Boldú, Francesc X.; Summerbell, Richard; Sybren De Hoog, G. (2006). "Fungi growing on aromatic hydrocarbons: ... Members of Chaetothyriales (class Eurotiomycetes) are found in hydrocarbon-rich environments or in nutrient poor, moist indoor ...
*  Benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide
Pyrene is a polycyclic aromatic hydrocarbon consisting of four benzene rings fused together in a planar aromatic arrangement ... Kleiböhmer, W. (2001). "Polycyclic Aromatic Hydrocarbon (PAH) Metabolites". Environmental Analysis (Volume 3 of Handbook of ... with intercalation of a pyrene polycyclic aromatic hydrocarbon moiety between the base pairs favouring π-stacking; these ... "Stereoselective Epoxidation and Hydration at the K-region of Polycyclic Aromatic Hydrocarbons by cDNA-Expressed Cytochromes ...