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	Coronene - Wikipedia, the free encyclopedia
		Coronene is produced in the petroleum refining process of hydrocracking, where it can domerize to a twenty-five ring PAH.
		In the latter case the most stable structure for coronene has only the three isolated outer sextets as fully aromatic although superaromaticity would still be possible when these sextets are able to migrate into the next ring.
		In this geometry the stacks of coronene disks are aligned with the length of the tube.
	www.sciencedaily.com /encyclopedia/coronene (534 words)

	Print Page - Confusion over coronene
		Coronene is a hydrocarbon that is made of six benzene rings fused together in a shape similar to a snowflake.
		Judging from this, coronene should be either anti-aromatic or non-aromatic.
		By definition, coronene shouldn't be aromatic, but every source I can find says it is. Weird.
	www.thenakedscientists.com /forum/index.php?action=printpage;topic=658.0 (268 words)

	KSEF
		This research examines coronene and similar plate-like, fused ring molecules for their potential to reinforce polymer matrices with unprecedented effectiveness.
		In proposing to use coronene and similar molecules as reinforcements for polymers, we are entering the smallest end of the nanoscale regime.
		The dimension of these molecules is on the order of a nanometer, one to three orders of magnitude less than those of the montmorillonite clays and carbon nanotubes currently being vigorously explored as nanoreinforcements for polymer matrices.
	ksef.kstc.com /Relation/downloadFile.cfm?DocNum=149 (330 words)

	A Protocol for Deriving Values for DfusHm(298.15 K) and DvapHm(298.15 K). (Site not responding. Last check: )
		The physical properties of both coronene and perylene have been the subject of recent theoretical treatments [8, 64].
		Coronene, mp 715 K, is an example of a molecule that is quite non-volatile.
		The results are summarized in Table 10 which include the reported sublimation enthalpies at the mean temperature of measurement and values adjusted to 298.15 K using equation 15.
	www.umsl.edu /~jscumsl/JSCPUBS/NATO986.html (2979 words)

	Method for removing coronene from heat exchangers - Patent 4203825
		Coronene deposits are removed from a heat exchange zone of a reforming process by operating the reforming zone at conditions such that at least a portion of the reformer effluent condenses in the heat exchange zone where the coronene deposit occurs.
		Because of its high melting point, when coronene is present in relatively high concentrations, coronene readily deposits as a solid upstream of the effluent dew point in the heat exchanger used to cool the effluent.
		When the content of coronene in the reformer effluent is relatively high, that is, at least 0.5 wppm, coronene may precipitate out from the effluent to the surface of the heat exchanger.
	www.freepatentsonline.com /4203825.html (1843 words)

	Coronene at AllExperts
		Coronene is an polycyclic aromatic hydrocarbon consisting of six ortho-fused benzene rings.
		Coronene has been seen on the surface of Titan (Saturn's moon).
		Coronene occurs naturally as the mineral carpathite (karpatite) ([1], [2]).
	en.allexperts.com /e/c/co/coronene.htm (117 words)

	plastic surgery Coronene - plastic-surgery-report.com (Site not responding. Last check: )
		Coronene is a polycyclic aromatic hydrocarbon consisting of seven peri-fused benzene rings
		Coronene is produced in the petroleum refining process of hydrocracking, where it can domerize to a twenty-five ring PAH Coronene has been seen on the surface of Titan (Saturn's moon).
		In the latter case the most stable structure for coronene has only the three isolated outer sextets as fully aromatic although superaromaticity would still be possible when these sextets are able to migrate into the next ring.
	www.plastic-surgery-report.com /Coronene (426 words)

	Coronene (IARC Summary & Evaluation, Volume 32, 1983)
		Coronene was tested for carcinogenicity in one experiment in mice by skin application.
		Coronene was mutagenic to Salmonella typhimurium in the presence of an exogenous metabolic system.
		Coronene is present as a minor component of the total content of polynuclear aromatic compounds in the environment; it is a major component of the polycyclic aromatic compound content of gasoline engine exhaust.
	inchem.org /documents/iarc/vol32/coronene.html (152 words)

	[No title]
		Therefore, it was conceivable that fullerene, coronene and calixarene activators may preferentially accumulate at the interfacial region and, therefore, mediate interface-directed translocation of polyarginine carriers.
		The dotted line indicates the phase transition of DPPC at 41.4 °C, data points were taken at 25, 35, 45, 50 and 60 °C. The efficiency sequences in sol-phase DPPC, in gel-phase DPPC and in sol-phase EYPC were not the same (Table 3).
		High activities of coronenes and pyrenes in DPPC vesicles might relate to the preference of polyaromatic hydrocarbons to partition into liquid ordered phase rather than liquid disordered phase of a bilayer.
	www.rsc.org /delivery/_ArticleLinking/DisplayHTMLArticleforfree.cfm?JournalCode=OB&Year=2005&ManuscriptID=b501472g&Iss=9 (3664 words)

	TU Chemnitz: Internet: Inhaltsseite
		Coronene tends to form islands on a graphite surface.
		All islands lie on a closed monolayer of coronene molecules according to the Stranski-Krastanov growth mode.
		A formation of seven single molecules is marked in the image by the white circles.
	www.tu-chemnitz.de /physik/AFKO/forschung/stmgallery/cor_graphite/cor_graphite.php (159 words)

	Jahrbuch-CD der MPG 2003 - Electron-intramolecular-phonon
		Electron-intramolecular-phonon coupling and its role in the occurrence of possible superconductivity in the monoanions of coronene (C24H12) and corannulene (C20H10) are studied.
		The C-C stretching E-2g mode of 1668 cm(-1) plays an essential role in the electron-intramolecular-phonon coupling in the monoanion of coronene while the low frequency E-2 modes, which have a radial character, and the C-C stretching mode of 1669 cm(-1), which has a tangential character, afford large electron-intramolecular-phonon coupling constants in the monoanion of corannulene.
		The intermediate characteristics between sigma and pi orbital interaction properties owing to the bowl- shaped structure of corannulene make orbital interactions between two neighboring carbon atoms strong, and thus electron- intramolecular-phonon coupling is stronger in the monoanion of corannulene than that in the monoanion of coronene.
	www.mpg.de /forschungsergebnisse/wissVeroeffentlichungen/archivListenJahrbuch/2002/29/publZIM191.html (216 words)

	Coronene - complete list of mineral names
		Coronene (C/sub 24/H/sub 12/) is a relatively stable multi-ringed hydrocarbon consisting of six benzene rings symmetrically arranged about another central benzene ring.^It melts at 432/sup 0/C and boils at 525/sup 0/C. the hydrogenated forms of coronene are discussed.^Coronene showed a great amount...
		Coronene is an aromatic molecule consisting of 7 benzene rings...
		Abstract The adsorption of the aromatic molecule hexa- benzobenzene (coronene) on an HOPG(0001) surface was...
	www.absoluterocknet.com /complete_list_of_mineral_and_crystal_names/Coronene.asp (581 words)

	Common molecules #50791 - Reciprocal Net
		Coronene is a polycyclic aromatic hydrocarbon (PAH) containing seven aromatic carbon rings.
		Coronene is a yellow fibrous powder that is fairly stable, but combustible.
		Coronene was recently discovered to be responsible for some astronomical phenomena, that being the effect of infrared absorption of starlight caused by the excitation of the compound s molecular vibrational modes.
	www.reciprocalnet.org /recipnet/showsample.jsp?sampleId=27344490 (110 words)

	Hydrogen spillover on carbon-supported metal catalysts - ISIS 2002 ISIS Facility Annual Report
		First coronene, used as a molecular model of a graphite layer (Fig.
		Secondly, fast hydrogen uptake at 293 K. In this case, the catalysts were loaded into a circular steel sample cell and dosed with dihydrogen at 293 K. Uptake was fast and complete after 10 - 30 min.
		There is no amplification of the higher wavenumber in-plane ring nodes, demonstrating that H is absent from the basal plane.
	www.isis.rl.ac.uk /isis2002/highlights/19_HydrogenSpillover.htm (892 words)

	Coronene on Ag(111) Investigated by LEED and STM in UHV
		The single molecules are surrounded by concentric rings of standing electron waves, which can be observed at room temperature.
		For a very low coverage randomly distributed individual molecules adsorbed on terraces were found.
		[B] Ludwig-Maximilians-University Munich, Institute of Crystallography and Applied Mineralogy, Muenchen, Germany; Markus Lackinger, Stefan Griessl, Wolfgang M. Heckl and Michael Hietschold B, Coronene on Ag(111) Investigated by LEED and STM in UHV J. Phys.
	www.omicron.de /results/coronene_on_ag_111_investigated_by_leed_and_stm_in_uhv (595 words)

	Coronene (IARC Summary & Evaluation, Volume 32, 1983)
		No significant increase in the incidence of skin tumours was observed.
		There is inadequate evidence that coronene is active in short-term tests.
		The available data are inadequate to permit an evaluation of the carcinogenicity of coronene to experimental animals.
	www.inchem.org /documents/iarc/vol32/coronene.html (152 words)

	Nelly Furtado - Official Fans Forum & Message Board - View Profile: coronene
		Nelly Furtado - Official Fans Forum & Message Board - View Profile: coronene
		View more photos in the Nelly Furtado Flickr group (Please join and add your photos to the group, they will then appear here)
		coronene is not a member of any public groups
	www.burninthespotlight.com /forum/member.php?u=3574 (92 words)

	Definition of coronene - Merriam-Webster Online Dictionary
		Learn more about "coronene" and related topics at Britannica.com
		Find more about "coronene" instantly with Live Search
		See a map of "coronene" in the Visual Thesaurus
	www.webster.com /dictionary/coronene (38 words)

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