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Any organic compound with alternating C–C and C≡C bonds
A polyyne is any organic compound with alternating single and triple bonds; that is, a series of consecutive alkynes, (−C≡C−)n with n greater than 1.
Polyyne
Atomically-precise manufacturing system
using scanning probe microscopy to construct molecules such as FeCO and polyyne, or to perform hydrogen depassivation lithography. But it is not yet possible
Productive_nanosystems
Polymer made of repeating –C≡C– units
alternating single and triple bonds. It would thus be the ultimate member of the polyyne family. This polymeric carbyne is of considerable interest to nanotechnology
Linear_acetylenic_carbon
Chemical compound
and water dropwort (Oenanthe crocata). The compound contains polyene, polyyne, and alcohol functional groups and is a structural isomer of oenanthotoxin
Cicutoxin
Species of flowering plant
opened the door and windows so that he could finish his work. Being a polyyne, oenanthotoxin is quite unstable, and boiling the roots both lessens the
Oenanthe_crocata
Ring molecule made of 18 linked carbon atoms
atoms, connected by alternating triple and single bonds; thus, it is a polyyne and a cyclocarbon. Cyclo[18]carbon is the smallest cyclo[n]carbon predicted
Cyclo(18)carbon
Hydrocarbon compound containing one or more C≡C bonds
thousand naturally occurring acetylenes have been discovered and reported. Polyynes, a subset of this class of natural products, have been isolated from a
Alkyne
Chemical compound
Falcarindiol is a polyyne found in carrot roots which has antifungal activity. Falcarindiol is the main compound responsible for bitterness in carrots
Falcarindiol
Organic compound (HCCCCH)
simplest compound containing two triple bonds. It is first in the series of polyynes, which are of theoretical but not of practical interest. Diacetylene has
Diacetylene
Family of flowering plants
Apiaceae, including carrot, celery, fennel, parsley and parsnip, contain polyynes, an unusual class of organic compounds that exhibit cytotoxic effects.
Apiaceae
Chemical reaction series
resolution. One study explored this reaction for the synthesis of novel polyynes: Corey–Fuchs reaction Paul Fritsch (1894). "Ueber die Darstellung von Diphenylacetaldehyd
Fritsch–Buttenberg–Wiechell rearrangement
Fritsch–Buttenberg–Wiechell_rearrangement
Chemical compound
fatty acid containing four triple bonds and belonging to the class of polyyne and alkynoic acids. It was only discovered in 1989. The acid is optically
Minquartynoic_acid
Chemical compound
the chemical formula C 12H 8O. The structure contains acetophenone and a polyyne (pentadiynyl) portion, conjugated together as an ynone. Capillin is found
Capillin
Polyunsaturated organic compound
theoretical interest because they exhibit metallic properties upon oxidation. Polyyne Sharp, DWA, ed. (1990). The Penguin Dictionary of Chemistry (2nd ed.).
Polyene
reactive sites, repeated placement of carbon units, and stepwise formation of polyyne-like carbon chains through successive C–C bond formation, suggesting a
2026_in_science
Ring molecule composed entirely of carbon atoms
cyclic cumulene) or alternating single bonds and triple bonds (a cyclic polyyne). The first cyclocarbon synthesized is cyclo[18]carbon (C18). Besides that
Cyclocarbon
Chemical compound
certain conditions. "Copper(I) acetylide" is claimed to be a precursor to polyynes. Treatment of Cu2C2·H2O with ammonia in air leaves a black solid residue
Copper(I)_acetylide
Allotrope of silicon
triple-bonded silicons, analogous to the situation of carbon found in polyyne. 2-dimensional silicyne is analogous to the carbon allotrope graphyne,
Silicyne
Chemical compound
storage. The compound is sensitive to light and heat. Falcarinol is a polyyne with two carbon-carbon triple bonds and two double bonds. The double bond
Falcarinol
Genus of plants
plants' active constituent is a chemical called ichthyothereol, which is a polyyne compound that is highly toxic to fish and mammals. Ichthyothere terminalis
Ichthyothere
Use of nanotechnology in electronic components
nanotubes of carbon and other materials, metal atom chaines, cumulene or polyyne carbon atom chains, and many polymers such as polythiophenes. Nanoionics
Nanoelectronics
Species of plant
reported to be toxic. Chaerophyllum temulum has been reported to contain the polyyne falcarinol and the compound falcarinone. Chaerophyllum temulum has been
Chaerophyllum_temulum
Saturated alicyclic hydrocarbon
(1963). "13. Macrocyclic compounds. Part I. Synthesis of macrocyclic polyynes: conformational effects in ring formation and in physical properties".
Cycloalkane
Any organic compound containing a C=C and C≡C bond
isanolic acid, exocarpic acid and cicutoxin. Enyne metathesis Enediyne Polyyne "Basic IUPAC Organic Nomenclature: Enynes". University of Calgary. chem
Enyne
Root vegetable in the flowering plant family Apiaceae
livestock and poultry in parts of their bodies where their skin is exposed. Polyynes can be found in Apiaceae vegetables such as parsnip, and they show cytotoxic
Parsnip
Organic polymer made of the repeating unit [C2H2]
polyacetylenes also occur in nature, although in this context the term refers to polyynes, compounds containing multiple acetylene groups ("poly" meaning many),
Polyacetylene
Organic compound (HC≡C–C≡N)
N≡C−C≡C−C≡N Diacetylene, H−C≡C−C≡C−H Cyanogen, N≡C−C≡N Hydrocyanic acid, H−C≡N Polyyne, R−(C≡C)n−R Murahashi, Shunsuke; Takizawa, Takeo; Kurioka, Shohei; Maekawa
Cyanoacetylene
Hydrocarbon compound with 3 or more consecutive double bonds
Unlike most alkanes and alkenes, cumulenes tend to be rigid, comparable to polyynes. Cumulene carbenes H2Cn for n from 3 to 6 have been observed in interstellar
Cumulene
Award given by the Royal Society of London
of carbon chain molecules, leading to the detection of these species (polyynes) in the interstellar medium by radioastronomy, and thence to the genesis
Copley_Medal
Topics referred to by the same term
a form of carbon with chains of alternating single and triple bounds A polyyne, a molecule with such a chain in its molecular structure Carbyne (company)
Carbyne_(disambiguation)
Scientific assessments on the microbial habitability of Titan
believed to be indicated by the data and associated models include ammonia, polyynes, amines, ethylenimine, deuterium hydride, allene, 1,3 butadiene and any
Life_on_Titan
Chemical reaction
counterions, such as CF3−, can be produced in-situ. Properly designed polyyne substrate has been shown to undergo efficient cascade net [4+2] cycloadditions
Hexadehydro Diels–Alder reaction
Hexadehydro_Diels–Alder_reaction
Chemical compound of lithium and carbon, an acetylide
M.; Waugh, F. (1972). "Friedel–Crafts reactions of bis(trimethylsilyl)polyynes with acyl chlorides; a useful route to terminal-alkynyl ketones". Journal
Dilithium_acetylide
Chemical compound
Atractylodin is a polyyne found in Atractylodes, in particular Atractylodes lancea and Atractylodes chinensis. It serves as the primary active component
Atractylodin
Chemical compound
Ichthyothereol is a toxic polyyne compound found in the leaves and flowers of several plants in South and Central America. These plant sources and their
Ichthyothereol
Chemical compound
Bupleurotoxin (BETX) is a highly toxic polyyne compound isolated primarily from the rhizomes of Bupleurum longiradiatum, a poisonous plant native to Northeast
Bupleurotoxin
American organic chemist (born 1968)
Michigan Michigan State University Thesis Cyclocarbons, Fullerenes, and Polyyne Rods: An Investigation of the Chemistry of All-Carbon and Carbon-Rich Molecules (1994)
Nancy_Goroff
Evolutionary mechanism
peptides as defenses. The cholinergic toxin cicutoxin of water hemlock is a polyyne derived from the fatty acid metabolism. Oxalyldiaminopropionic acid is
Plant defense against herbivory
Plant_defense_against_herbivory
A number of polyyne-derived chemicals are among the heaviest molecules found in the interstellar medium.
List of interstellar and circumstellar molecules
List_of_interstellar_and_circumstellar_molecules
Chemical compound made of only carbon and nitrogen
alternating single and triple bonds, terminated by nitrogen atoms. Although not polyynes, cyanogen N≡C−C≡N (n = 0) and dicyanoacetylene N≡C−C≡C−C≡N (n = 1) also
Carbon_nitride
Family of organic compounds
structural formula H−[C≡C−]nC≡N (n = 1,2,3,…). Structurally, they are polyynes with a cyano group (−C≡N) covalently bonded to one of the terminal acetylene
Cyanopolyyne
Chemical compound
Tetraethynylmethane is an organic compound with formula C9H4, consisting of four ethynyl groups bonded to a central carbon atom. It is an alkyne, and one
Tetraethynylmethane
Any organic compound containing one double and two triple bonds
reduce carcinomas in bladder cells. Enyne metathesis Enyne Metalloenediynes Polyyne Nicolaou KC, Smith AL, Yue EW (July 1993). "Chemistry and biology of natural
Enediyne
Chemical compound
Oenanthotoxin is a toxin extracted from hemlock water-dropwort (Oenanthe crocata) and other plants of the genus Oenanthe. It is a central nervous system
Oenanthotoxin
Species of shrub
Qing-wen Zhang (23 February 2010). "Isolation and Identification of Two New Polyynes from a North American Ethnic Medicinal Plant--Oplopanax horridus (Smith)
Oplopanax_japonicus
Chemical compound
Agrocybin is a toxic polyyne amide found in certain mushrooms, notably in the genus Agrocybe (especially Agrocybe dura) and in Marasmius oreades. It exhibits
Agrocybin
Organic radical molecule
Octatetraynyl radical (C8H) is an organic free radical with eight carbon atoms linked in a linear chain with alternating single bonds and triple bonds
Octatetraynyl_radical
German chemist (1921-1991)
studies of plant natural products chemistry, especially terpenoids and polyynes. Bohlmann studied chemistry in Göttingen from 1939 to 1944. His studies
Ferdinand_Bohlmann
Chemical compound
Vladimir V. (2000). "What Do Titano- and Zirconocenes Do with Diynes and Polyynes?". Chem. Rev. 33 (2): 119–129. doi:10.1021/ar9900109. PMID 10673320. Rosenthal
Titanocene_dichloride
Chemical compound
; et al. (2000). "What Do Titano- and Zirconocenes Do with Diynes and Polyynes?". Chemical Reviews. 33 (2): 119–129. doi:10.1021/ar9900109. PMID 10673320
Decamethyltitanocene dichloride
Decamethyltitanocene_dichloride
Organic radical molecule
The hexatriynyl radical, C6H, is an organic radical molecule consisting of a linear chain of six carbon atoms terminated by a hydrogen (H−C≡C−C≡C−C≡C•)
Hexatriynyl_radical
German-British chemist (1926–1981)
XXI.1The Synthesis of a Series of Fully Conjugated Macrocyclic Polyene-polyynes (Dehydro-annulenes) from 1,5-Hexadiyne". Journal of the American Chemical
Franz_Sondheimer
Chemical compound
Isofalcarintriol (IUPAC name (3S,8R,9R,E)-heptadeca-10-en-4,6-diyne-3,8,9-triol) is a polyacetylene contained in the root of carrots (Daucus carota).[
Isofalcarintriol
Absorption features in astronomical spectra
Polycyclic aromatic hydrocarbons, long carbon-chain molecules such as polyynes, and fullerenes are all potentially important. These types of molecule
Diffuse_interstellar_bands
Medicinal herb Chinese
atractylenolides I, II, and III. Other major active ingredients in A. lancea include polyynes, in particular atractylodin. A few sources have reported antimicrobial
Cāng_zhú
Chemical compound
; et al. (2000). "What Do Titano- and Zirconocenes Do with Diynes and Polyynes?". Chemical Reviews. 33 (2): 119–129. doi:10.1021/ar9900109. PMID 10673320
Decamethylzirconocene dichloride
Decamethylzirconocene_dichloride
Multi-photon microscopy technique
(2018). "Supermultiplexed optical imaging and barcoding with engineered polyynes". Nature Methods. 15 (3): 194–200. Bibcode:2018NatCB..15..194H. doi:10
Coherent Raman scattering microscopy
Coherent_Raman_scattering_microscopy
Chemical compound
Zavitsas; Joel F. Liebman (2004). "On the Lack of Conjugation Stabilization in Polyynes (Polyacetylenes)". J. Org. Chem. 69 (21): 7143–7147. doi:10.1021/jo049390o
1,4-Pentadiyne
Chemical compound
Rosenthal; et al. (2000). "What Do Titano- and Zirconocenes Do with Diynes and Polyynes?". Chemical Reviews. 33 (2): 119–129. doi:10.1021/ar9900109. PMID 10673320
Bent_metallocene
V. (2000-02-01). "What Do Titano- and Zirconocenes Do with Diynes and Polyynes?". Accounts of Chemical Research. 33 (2): 119–129. doi:10.1021/ar9900109
Rosenthal's_reagent
Carbon mineral whose existence is disputed
Earth, in Meteorites, Comets, Circumstellar and Interstellar Dust, in Polyynes: Synthesis, Properties, and Applications, Edited by Franco Cataldo, CRC
Chaoite
Chemical compound
M.; Waugh, F. (1972). "Friedel–Crafts reactions of bis(trimethylsilyl)polyynes with acyl chlorides; a useful route to terminal-alkynyl ketones". Journal
Bis(trimethylsilyl)acetylene
POLYYNE
POLYYNE
POLYYNE
POLYYNE
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, an uncertain deity, like Harpakrut.
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POLYYNE
POLYYNE
POLYYNE
POLYYNE
POLYYNE