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Topic: Ethyl radical

Related Topics

Tetra ethyl lead

ethyl alcohol

ethyl mercaptan

Ethyl chloride

ethyl acetate

methyl ethyl ketone

Ethyl maltol

ethyl radical

Butanone methyl ethyl ketone

ethyl formate

propyl sodium ethyl p hydroxybenzoate

ethanol or ethyl alcohol

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	Ethyl vs. Methyl
		In conclusion, both animal and human studies indicated that the pattern of tissue disposition of ethyl mercury was qualitatively similar to that of methyl mercury, with brain levels of the intact mercury being slightly higher for methyl than for ethyl.
		Ethyl mercury poisoning was characterized by a latent period of several weeks between first exposure and onset of the first symptom of poisoning, as has been observed for methyl mercury.
		Data on the biologic half-time of the ethyl mercury radical in body tissues, especially the brain, are essential for estimates of tissues burdens and health risk from cumulative exposure from repeated doses of thimerosal in vaccines given to infants.
	www.vaccinetruth.org /ethyl_vs__methyl.htm (14750 words)

	Radiation Chemistry and Photochemistry (Site not responding. Last check: 2007-10-24)
		Both ethyl radical and a longer, chain-end radical are observed after 77 K radiolysis of ethylene on silica gel.
		Further direct evidence of the scavenging of radical cations by neutral radicals was obtained by sequential generation of benzene radical cations and ethyl radicals.
		Radicals grafted to the surface offer unique opportunities to study the thermal and photochemical reactions of radicals because the radicals are immobilized.
	chemistry.anl.gov /photochemistry/part-c.html (8672 words)

	Ethane - Wikipedia, the free encyclopedia
		During the period 1847–1849, in an effort to vindicate the radical theory of organic chemistry, Hermann Kolbe and Edward Frankland produced ethane by the reductions of propionitrile (ethyl cyanide) and ethyl iodide with potassium metal, and, as did Faraday, by the electrolysis of aqueous acetates.
		An important series of reaction in ethane combustion is the combination of an ethyl radical with oxygen, and the subsequent breakup of the resulting peroxide into ethoxy and hydroxyl radicals.
		The existence of ethane in these distant solar system bodies may implicate ethane as a primordial component of the solar nebula from which the sun and planets are believed to have formed.
	en.wikipedia.org /wiki/Ethane (1477 words)

	Alcohol and You
		Ethyl alcohol taken in via ingestion passes from the mouth down the esophagus and into the stomach and on into the small intestine.
		Ethyl alcohol crosses with water into the blood stream, therefore the process of distribution of alcohol is rapid.
		Ethyl alcohol decreases the ability of the body to concentrate urine, thus promotes water loss rather than allowing the water to be absorbed back into the body.
	chemcases.com /alcohol/index.htm (4115 words)

	Cyclopentane derivatives - Patent 3953502
		Ethyl acetate (50ml.) was added, the organic phase was separated and dried, and the solvent was evaporated under reduced pressure to yield a mixture of epimeric enols R.sub.F = 0.4 and 0.5 (25% methylenedichloride in ethyl acetate), contaminated with iso-borneol.
		M.sup.+= (50% ethyl acetate (50% ethyl acetate in 692.3424 692.3417 methylene dichloride) toluene) 3 1-benzocyclobutyl mixed M.sup.+= 674.3676 0.35 R.sub.F = 0.45 674.3686 (5% methanol in ethyl (25% ethyl acetate in acetate) toluene) __________________________________________________________________________ *l.p.
		Methyl 15-(5-chloroindan-2-yl)-11.alpha., 15-dihydroxy-2-methyl-9.alpha.-(4-phenylbenzoyloxy)-16,17,18,19,20-pentano r-5-cis, 13-trans-prostadienoate, R.sub.F = 0.1 (20% ethyl acetate in methylene chloride).
	www.freepatentsonline.com /3953502.html (6566 words)

	Sears publication #19 Vibrational Effects on ... (Site not responding. Last check: 2007-10-24)
		For molecules such as ethyl radical which have a small torsional barrier, the interaction between the internal rotation and the other normal modes of the molecule can have a substantial effect on the magnitude of the barrier itself.
		In ethyl this is experimentally demonstrated by a large change in the torsional barrier on vibrational excitation of the methylene group inversion motion.
		A simple method is applied to ethyl, involving the use of electronic structure calculations to estimate both the electronic and vibrational contributions to the barrier.
	www.chemistry.bnl.gov /GPMD/old-pages/SEARAB19.HTML (114 words)

	HighBeam Encyclopedia - ethyl
		ETHYL [ethyl], CH, organic free radical or alkyl group derived from ethane by removing one hydrogen atom.
		Influence of trinexapac-ethyl on respiration of isolated wheat mitochondria.
		Ethyl's plant closure leaves Octel as sole TEL producer.
	www.encyclopedia.com /html/e/ethyl.asp (157 words)

	Thermochemical and Kinetic Analysis of the 2 Hydroperoxy Ethyl Radical
		Thermochemical and Kinetic Analysis of the 2 Hydroperoxy Ethyl Radical
		Thermochemical and Kinetic Analysis of the 2 Hydroperoxy Ethyl Radical (H
		The enthalpy of formation of the stabilized adduct, hydroperoxy-ethyl peroxy radical, is calculated by isodesmic reaction analysis with B3LYP/6-31G(d,p) and CBS-Q ab initio calculations at -24.01 and -23.89 kcal/mol, respectively.
	www.cstl.nist.gov /div838/kinetics2001/agenda/c_session/c36/c36.htm (844 words)

	Ethyl Corporation Is The Parent Company Of Afton Chemical Corporation And Ethyl Corporation. Ethyl P (Site not responding. Last check: 2007-10-24)
		Ethyl chloride; CASRN 75-00-3 and 4946 +/- 159 ppm (13 000 mg/cu.
		Fruity: ethyl octanoate, ethyl propionate, 2-octyl acetate, 2 3-butanediol, butyl octanoate, ethyl benzoate, ethyl lactate, 3-methylnonane-2 4.
		Ethyl radical is more stable than methyl radical.
	www.99hosted.com /names1632.html (417 words)

	Radical (Site not responding. Last check: 2007-10-24)
		In chemistry, Radicals (often referred to as free radicals) are atomic or molecular species with unpaired electrons on an otherwise open shell configuration.
		Radical (mathematics), the n-th radical or root of a number 'a, written as, which is a number whose n-th power is a.
		Radical Constructivism Radical Constructivism Radical constructivism is the epistemological thesis that "any kind of knowledge is constructed rather than perceived through senses" and originated with Ernst van Glaserfield.
	scttuning.iredtuning.com /radical (936 words)

	U.S. Patent: 5300670 - Fluorosilicone polymer and curable fluorosilicone polymer composition - April 5, 1994
		The fluorosilicone polymer of claim 1, wherein R is selected from the group consisting of methyl, ethyl, phenyl and trifluoropropyl radicals.
		Q is an alkenyl radical having 4 to 8 carbon atoms, a is an integer having a value of at least 4, x, y and z are integers, each having a value of at least 1, with the proviso that (x+y+z).gtoreq.50, x/(x+y+z).gtoreq.0.25 and z/(x+y+z).ltoreq.0.1;
		According to this invention, when a vinyl radical or allyl radical is used in place of Q in the fluorosilicone polymer, the curing rate decreases or a completely cured coating just cannot form.
	www.everypatent.com /comp/pat5300670.html (2949 words)

	Infix - Wikipedia, the free encyclopedia
		The -ma- infix, whose distribution was documented by linguist Alan C. Yu, originated in the US television show The Simpsons and gives a word an ironic pseudo-sophistication, as in sophistimacated, saxomaphone, and edumacation.
		Chemical nomenclature includes the infixes -pe-, signifying complete hydrogenation (from piperidine), and -et- (from ethyl), signifying the ethyl radical C
		Thus from picoline is derived pipecoline, and from lutidine is derived lupetidine; from phenidine and xanthoxylin are derived phenetidine and xanthoxyletin.
	en.wikipedia.org /wiki/Infix (493 words)

	13-alkyl-11beta-phenylgonanes - Patent 5446036
		As heteroaryl radical of Formula Ib, according to the invention the 3-pyridyl or 4-pyridyl, the 5-pyrimidine, 4-pyridazine or pyrazine radicals are especially suitable.
		As cycloalkyl, cycloalkenyl or aryl radical lc, the cyclohexyl, cyclohex-1-enyl, cyclohex-2-enyl-, cyclohex-3-enyl-, as well as the phenyl radical are to be especially emphasized.
		The 13-alkyl-11beta-phenylgonanes of general formula I, in which the 11beta-phenyl radical in 4 position carries the substituents according to the invention, are produced according to the process according to claim 11.
	www.freepatentsonline.com /5446036.html (4712 words)

	Ethyl Alcohol Resources (Site not responding. Last check: 2007-10-24)
		Ethyl alcohol is manufactured by synthesis from ethylene and is...
		Ethanol (ethyl alcohol) is the alcohol found in alcoholic beverages such as...
		The ethanol, also known as ethyl alcohol, is produced from fermenting and then distil-ling molasses, a by-product of the sugarcane- milling process.
	www.the-alcohol-reference.info /ethyl-alcohol (1310 words)

	FanFiction.Net : Dictionary & Thesaurus (Site not responding. Last check: 2007-10-24)
		It is used as an antifreeze solvent, as a fuel, and as a denaturant for ethyl alcohol.
		Pure spirit of wine; pure or highly rectified spirit (called also ethyl alcohol or ethanol, CH3.CH2.OH); the spirituous or intoxicating element of fermented or distilled liquors, or more loosely a liquid containing it in considerable quantity.
		Chemically speaking, they are hydroxides of certain organic radicals; as, the radical ethyl forms common or ethyl alcohol (C2H5.OH); methyl forms methyl alcohol (CH3.OH) or wood alcohol; amyl forms amyl alcohol (C5H11.OH) or fusel oil, etc. [1913 Webster] From The Collaborative International Dictionary of English v.0.48 : Carbinol \Car"bi*nol\, n.
	www.fanfiction.net /dictionary.php?word=CH3.OH (354 words)

	Welcome to the Chengroup
		Direct classical trajectory calculations for ethyl radical, C2H5, at the HCTH147@6-31+G/ 6-31G level of theory support the experimental observation that the dissociation of highly excited ethyl radicals to ethylene and and a hydrogen atom can occur much more slowly than predicted by statistical rate theories.
		On the left-hand side are two representations of the same ethyl radical.
		The upper representation shows the wavelet filtered motion, filtered meaning that the density plots on the 21 spectrograms corresponding to the 21 Cartesian degrees of freedom are truncated to eliminate non-periodic contributions to the motion, and then inverse transformed to visualize the quasiperiodic parts of the trajectory.
	www.chen.ethz.ch /rsrch/comp (173 words)

	Ethyl - LoveToKnow 1911
		ETHYL, in chemistry, the name given to the alkyl radical C 2 H 5.
		The compounds containing this radical are treated under other headings; the hydride is better known as ethane, the alcohol, C 2 H 5 OH, is the ordinary alcohol of commerce, and the oxide (C 2 H 5) 2 O is ordinary ether.
		This page was last modified 16:11, 16 May 2006.
	www.1911encyclopedia.org /Ethyl (65 words)

	Chapter 11 (Site not responding. Last check: 2007-10-24)
		Hyperconjugation is the delocalization of electrons (stabilization) through the overlap of a p orbital {in a radical or ion} with a sigma bond orbital of the alkyl group.
		The three hyperconjugation structures for the ethyl radical show that the odd electron can be delocalized through interaction with the three adjacent C-H sigma bonds.
		In the radical there is one unpaired electron in the p orbital while in the cation, there are no electrons in the p orbital.
	web.njit.edu /~skawinsk/chem243/chap11/chap11.htm (2207 words)

	Foundations to Chemistry - adapted from "Chemistry, Matter and the Universe"
		The hydrocarbons attached to functional groups are called radicals (from "radix", meaning root); CH is the methyl radical, CH is the ethyl radical, and so on.
		This distinction between radicals and functional groups is an old one in organic chemistry, but a useful one.
		In this chapter we shall look at several important functional groups, seeing first what chemical properties these groups give to a molecule, and then how these properties are modified by the hydrocarbon radical to which they are attached.
	www.chem.ox.ac.uk /vrchemistry/OrgCompounds/HTML/page03.htm (101 words)

	ch3oh - definition by dict.die.net
		Pure spirit of wine; pure or highly rectified spirit (called also ethyl alcohol); the spirituous or intoxicating element of fermented or distilled liquors, or more loosely a liquid containing it in considerable quantity.
		Note: As used in the U. ``Pharmacop[oe]ia,'' alcohol contains 91 per cent by weight of ethyl alcohol and 9 per cent of water; and diluted alcohol (proof spirit) contains 45.5 per cent by weight of ethyl alcohol and 54.5 per cent of water.
		Chemically speaking, they are hydroxides of certain organic radicals; as, the radical ethyl forms common or ethyl alcohol (C2H5.OH); methyl forms methyl alcohol (CH3.OH) or wood spirit; amyl forms amyl alcohol (C5H11.OH) or fusel oil, etc.
	dict.die.net /ch3oh (220 words)

	The influence of the size and structure of a spectator alkyl group on the relative rates of alkyl radical elimination ...
		The size of the spectator alkyl group, R, affects the ratio of ethyl and propyl radical loss from metastable ionised amines containing a 3-hexyl group; the slight preference for expelling the smaller ethyl radical increases initially before gradually falling as n increases from 1 to 14.
		In general, the kinetic energy release which accompanies loss of either radical increases slowly with n, but remains small, as would be expected if the reaction occurred without appreciable reverse critical energy.
		Similar trends are found for the relative rates of propyl and butyl radical elimination from ionised amines containing a 4-octyl group.
	www.impub.co.uk /abs/EMS05_0339.html (278 words)

	Li+-coordinated polyglycol radicals: ion–molecule reactions with alkenes and ethers
		· (“ethyl” radical) are produced in the gas phase by fast atom bombardment of poly(ethylene glycol) 200 and the ion–fmolecule reactions of these novel distonic ions, [R·+Li]
		The dissociations promoted by the unpaired electron involve b-scissions and ·H rearrangements, which are the typical reactions of neutral radicals.
		This type of metal ion involvement in radical reactivity could be particularly important in biological milieus where metal ions abound.
	www.impub.co.uk /abs/EMS10_0909.html (308 words)

	Session J12 - Mini-Symposium: Cavity Ring-Down Spectroscopy.
		The ultraviolet absorption spectrum of the propargyl radical (H2C-C\equivCH) was re-examined in the wavelength regions of 235-260 nm and 320-360 nm, using the very sensitive, high resolution cavity ring-down spectroscopic (CRDS) technique.
		The radical was formed by excimer laser photolysis of propargyl chloride and allene, which were observed to produce identical spectra and kinetic behavior.
		The generation and decay of these radicals in the presence of excess amounts of a molecular reactant inside a high-quality optical cavity were monitored by the decay times of injected photons from a pulsed tunable dye laser.
	flux.aps.org /meetings/YR97/BAPSAPR97/abs/S1140.html (1005 words)

	Related WordNet synsets for SUMO concept CompoundSubstance
		ethyl alcohol that is unfit for drinking but is still useful for other purposes
		ethyl alcohol denatured with methyl alcohol to prevent its use as an alcoholic beverage
		any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
	virtual.cvut.cz /kifb/wordnet/_compound_substance.html (6134 words)

	GSU Chemistry Department Molecular Modeling Exercises (Site not responding. Last check: 2007-10-24)
		Aliphatic carbon centered radicals are stabilized by alkyl groups.
		In a series of compounds, the bond dissociation energy of a CH bond decreases as the resulting radical center becomes more substituted.
		Build and minimize ethane, propane, tert - butane, and their corresponding free radicals.
	chemistry.gsu.edu /glactone/modeling/Luise/organic/bondenergy.html (102 words)

	Rearrangement by intermediate ion/neutral complexes during the McLafferty fragmentation of unsaturated ketones
		This specific skeletal rearrangement is explained by an internal return within an intermediate ion/neutral complex f, consisting of the acetophenone enol radical cation and the neutral butadiene, by addition of the enol radical cation to the remote double bond of the diene.
		The second reaction channel is the irreversible cyclization of an intermediate distonic ion c leading to the formation of an ionized ethyl-a- dihydronaphthold.
		This ion is stabilized by loss of an ethyl radical resulting inprotonated a-naphthol e.
	www.impub.co.uk /abs/EMS01_0003.html (281 words)

	Dorlands Medical Dictionary
		oleate [NF] a mobile, practically colorless liquid consisting of esters of ethyl alcohol and high-molecular-weight fatty acids, principally oleic acid; used as a vehicle for pharmaceutical preparations.
		(eth´əl-āt) any compound of ethyl alcohol in which the hydrogen of the hydroxyl is replaced by a base.
		(eth”əl-a´shən) the act of combining or causing to combine with the ethyl radical.
	www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_e_17zPzhtm (3521 words)

	[No title]
		The transition state leading to the 3° radical is lower in energy than the transition state leading to the 1° radical.
		Both reactions are highly endothermic which means that both TS resemble the radical products closely.
		No free radical reaction occurs for HCl or HI If a free radical added to the alkene, but there was no H-Br to react with it, what reaction would be left to the new alkyl free radical?
	www.ipfw.edu /chem/262/262nt0204.htm (360 words)

	Percival's Recent Publications (Site not responding. Last check: 2007-10-24)
		Formation of the muoniated ethyl radical in the gas phase.
		Temperature dependence of the muon and proton hyperfine constants of an a muonium-substituted methyl radical.
		Hyperfine constants for the ethyl radical in the gas phase.
	www.sfu.ca /chemistry/faculty/Percival/pwp_pub.htm (645 words)

	- [www.rhodium.ws]
		With the procedure below, using calcium hypochlorite, the yield of chloroform is ~45% and that of propionic acid is ~40%, calculated on methyl ethyl ketone.
		Then 25 mL of methyl ethyl ketone was gradually introduced with stirring, care being taken to avoid frothing over.
		with a mixture of benzene and ethyl acetate.
	www.erowid.org /archive/rhodium/chemistry/propionic.acid.html (721 words)

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