The Structural Formula of Propene and Butene. ... and there is sufficient information available in ECHA’s databases for ECHA’s algorithms to generate a molecular structure. The chemical formula for butene is: C4 H8, which means it's made up of four carbon atoms and eight hydrogen atoms. Anal. Here are some basic rules for naming alkenes from the International Union of Pure and Applied Chemistry (IUPAC): The longest chain of carbon atoms containing the double bond is considered the parent chain. ; Einhorn, I.N., Generation of retention index standards by pyrolysis of hydrocarbons, Anal. Molecular Formula C 4 H 8; Average mass 56.106 Da; Monoisotopic mass 56.062599 Da; ChemSpider ID 7556 ; Odell, A.L., A system of standard retention indices and its uses. Res. Res. Chim. The characterisation of stationary phases and the prediction of retention indices, J. Vol.18, All-Union Research Institute on Oil Processes, Moscow, 1976, 30-53. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 300 ft; Column type: Capillary; Start T: 40 C; CAS no: 106989; Active phase: Squalane; Carrier gas: N2; Data type: Kovats RI; Authors: Matukuma, A., Retention indices of alkanes through C10 and alkenes through C8 and relation between boiling points and retention data, Gas Chromatogr., Int. Symp. Butyne is a compound with the chemical formula of C 4 H 6. But-→ beautiful → door → four → 4 carbon atoms-ane → cane → shingle → single → single carbon bond. Structure, properties, spectra, suppliers and links for: isobutene, Isobutylene, 115-11-7, 126-98-7. Highly flammable - readily forms explosive mixtureswith air. & Chromatogr. Comm., 5, 1982, 325-328. umn class: Standard non-polar; Column diameter: 0.50 mm; Column length: 150 m; Column type: Capillary; Start T: 20 C; CAS no: 106989; Active phase: OV-1; Carrier gas: He; Data type: Kovats RI; Authors: Nijs, H.H. Analysis of low-molecular-weight hydrocarbons and nitriles with a PoraPLOT Q porous polymer coated open-tubular capillary column, J. NACRES NA.22 Omissions? Data compiled as indicated in comments: ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein M- Michael M. Meot-Ner (Mautner) and Sharon G. Lias Note: Please consider using thereaction search for this species. The '-ene' refers to an alkene, so we know that butene's structure must include a carbon double bond. MDL number MFCD00009294. Instrumental Analysis, 17(1), 1998, 67-69. class: Standard non-polar; Column length: 20 ft; Column type: Packed; Description: 50C910min)=>20C/min=>90(6min)=>10C/min=>150C(hold); CAS no: 106989; Active phase: SE-30; Carrier gas: N2; Substrate: Chromosorb W; Data type: Normal alkane RI; Authors: Robinson, P.G. MLD 118, Revision No. Org. See Article History. Chromatogr., 481, 1989, 45-54. umn class: Semi-standard non-polar; Column type: Capillary; Start T: 50 C; CAS no: 106989; Active phase: Squalane; Data type: Kovats RI; Authors: Schroder, I.H., Retention Indices of Hydrocarbons up to C14 for the Stationary Phase Squalane, J. Hi. and butene (C 4 H 8 see isomers) by the structural formula. Propene (C 3 H 6) is commonly represented by the structural formula. (Rus. Data compiled as indicated in comments: ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein DRB - Donald R. Burgess, Jr. GT- Glushko Thermocenter, Russian Academy of Sciences, Moscow It is named using the same stem as the alkane having the same number of carbon atoms but ends in -ene to identify it as an alkene. Gas Chromatogr., , 1967, 506-510. class: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Description: -50 0C (2 min) ^ 8 0C/min -> 200 0C (7.75 min) ^ 25 0C -> 225 0C (8 min); CAS no: 106989; Active phase: Methyl Silicone; Carrier gas: Helium; Phase thickness: 1.0 um; Data type: Normal alkane RI; Authors: Blunden, J.; Aneja, V.P. All four of these hydrocarbons have four carbon atoms and one double bond in their molecules, but have different chemical structures. Gas Chromatogr., , 1967, 506-510. umn class: Semi-standard non-polar; Column diameter: 0.15 mm; Column length: 12 m; Column type: Capillary; Start T: 30 C; CAS no: 106989; Active phase: BPX-5; Carrier gas: H2; Phase thickness: 0.25 um; Data type: Kovats RI; Authors: Aflalaye, A.; Sternberg, R.; Raulin, F.; Vidal-Madjar, C., Gas chromatography of Titan's atmosphere. ), 353(5), 1997, 625-627, In original 625-627. ass: Standard non-polar; Column type: Capillary; CAS no: 106989; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Zenkevich, I.G. you can look it up in google. Compare these with the isomers of butane and pentane on the previous pages. & Chromatogr. 2. Butene Last updated December 19, 2020. Good ventilation. S9,S16,S23,S24/25,S26,S33,S36/37/39,S38,S45,S47. 1-Butene, polymer with ethene and 1-propene. Molecular structure. Butane. Future versions of this site may rely onrea… Both these are organic compounds containing four carbon atoms and different numbers of hydrogen atoms. Butene is the third occurring chemical compound in the alkene series of compounds. Comm., 3, 1980, 38-44. umn class: Semi-standard non-polar; Column type: Packed; Start T: 80 C; CAS no: 106989; Active phase: Squalane; Data type: Kovats RI; Authors: Chretien, J.R.; Dubois, J.E., Topological analysis of gas-liquid chromatographic behavior of alkenes, Anal. PubChem Substance ID 24857756. Chromatogr. ; Blomberg, J.; Genuit, W.; van Velzen, G., Comparison of comprehensive two-dimensional gas chromatography and gas chromatography-mass spectrometry for the characterization of complex hydrocarbon mixtures, J. Chromatogr. CopyCopied, CSID:7556, http://www.chemspider.com/Chemical-Structure.7556.html (accessed 22:29, Jan 9, 2021) Butene is therefore obtained by catalytic cracking of long-chain hydrocarbons left … We know it has four carbon atoms from the ''but'' portion of the name which means four. ; Chupalov, A.A.; Herzschuh, R., Correlation of the Increments of Gas Chromatographic Retention Indices with the Differences of Innermolecular Energies of Reagents and Products of Chemical Reactions, Zh. Butene, also known as butylene, is an alkene with the formula C 4 H 8.It is a colourless gas that is present in crude oil as a minor constituent in quantities that are too small for viable extraction. ), 32(11), 1996, 1685-1691, In original 1685-1691. class: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Description: 35 0C (13 min) ^ 10 0C/min -> 45 0C (15 min) ^ 1 0C/min -> 60 0C (15 min) ^ 1.9 0C/min -> 200 0C; CAS no: 106989; Active phase: RTX-1 PONA; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Restek, Restek International, 1999 Product Guide, 1(1), 1999, 578-591, In original 578-591. class: Standard non-polar; Column diameter: 0.53 mm; Column length: 60 m; Column type: Capillary; Description: 40C(6min)=>5C/min=>80C=>10C/min=>200C; CAS no: 106989; Active phase: SPB-1; Carrier gas: He; Phase thickness: 5 um; Data type: Normal alkane RI; Authors: Flanagan, R.J.; Streete, P.J. Images of the chemical structure of 2-Butanone are given below: The 2D chemical structure image of 2-Butanone is also called skeletal formula, which is the standard notation for organic molecules. Question. Chromatogr., 436, 1988, 137-172. ass: Semi-standard non-polar; Column type: Capillary; Heat rate: 10 K/min; Start T: 0 C; End T: 220 C; CAS no: 106989; Active phase: Chromosorb 101; Data type: Linear RI; Authors: Voorhees, K.J. Org. A butene with unsaturation at position 1. Linear Formula CH 3 CH=CHCH 3. CopyCopied, VXNZUUAINFGPBY-UHFFFAOYSA-N Sci., 19, 1981, 40-45. umn class: Standard non-polar; Column length: 26 ft; Column type: Packed; Start T: 70 C; CAS no: 106989; Active phase: SE-30; Substrate: Diatoport S; Data type: Kovats RI; Authors: Widmer, H., Gas chromatographic identification of hydrocarbons using retention indices, J. Chromatogr., 591, 1992, 297-301. umn class: Standard non-polar; Column diameter: 0.21 mm; Column length: 50 m; Column type: Capillary; Start T: 40 C; CAS no: 106989; Active phase: HP-PONA; Carrier gas: H2; Phase thickness: 0.5 um; Data type: Kovats RI; Authors: Lubeck, A.J. fluorine, nitrogen oxides. 1-Butene | C4H8 | CID 7844 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Chromatogr., 481, 1989, 45-54. umn class: Standard non-polar; Column diameter: 0.5 mm; Column length: 100 m; Column type: Capillary; Start T: 60 C; CAS no: 106989; Active phase: SE-30; Data type: Kovats RI; Authors: Bredael, P., Retention indices of hydrocarbons on SE-30, J. Hi. Butene and pentene exist as different isomers. Chiefly, the main difference between butane and butene is in their chemical structures. The structure will be: CH 3 CHBrCH 2 Br. 4 carbon atoms → four → door → beautiful → but-Single carbon bond → single → shingle → cane → -ane 1.1, California Environmental Protection Agency, Air Resources Board, El Monte, California, 1997, 22. class: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Description: -40 C for 12 min; -40 - 125 C at 3 deg.min; 125-185 C at 6 deg/min; 185 - 220 C at 20 deg/min; hold 220 C for 2 min; CAS no: 106989; Active phase: DB-1; Carrier gas: He; Phase thickness: 1.0 um; Data type: Kovats RI; Authors: Hoekman, S.K., Improved gas chromatography procedure for speciated hydrocarbon measurements of vehicle emissions, J. where the double lines between the carbon atoms represent a double covalent bond. Butane and 1-butene are common impurities, present at 1% or more in industrial mixtures, which also contain smaller amounts of isobutene, butadiene and butyne. Environ., 39, 2005, 6707-6718. ass: Semi-standard non-polar; Column length: 2 m; Column type: Packed; Heat rate: 5 K/min; Start T: 50 C; End T: 220 C; End time: 0 min; Start time: 0 min; CAS no: 106989; Active phase: Porapack Q; Carrier gas: Nitrogen; Data type: Normal alkane RI; Authors: Zenkevich, I.G. InChI=1S/C4H8/c1-3-4-2/h3H,1,4H2,2H3 The chemical formula is C 4 H 8. It is therefore obtained by catalytic cracking of long chain hydrocarbons left during refining of crude oil. Both are highly flammable. Butene, also called Butylene, any of four isomeric compounds belonging to the series of olefinic hydrocarbons. ; Ramsey, J.D., Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 40 C; End T: 250 C; Start time: 1 min; CAS no: 106989; Active phase: DB-5MS; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Shoenmakers, P.J. ; Sutton, D.L., Kovats Retention Indices of Selected Olefins on Bonded Phase Fused Silica Capillaries, J. Hi. Butane is an organic compound having the chemical formula C 4 H 10 and butene is an organic compound having the chemical formula C 4 H 8. A, 892, 2000, 29-46. ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 30 C; End T: 240 C; Start time: 10 min; CAS no: 106989; Active phase: DB-1; Carrier gas: He; Phase thickness: 1.2 um; Data type: Normal alkane RI; Authors: Ciccioli, P.; Cecinato, A.; Brancaleoni, E.; Frattoni, M.; Liberti, A., Use of carbon adsorption traps combined with high resolution gas chromatography - mass spectrometry for the analysis of polar and non-polar C4-C14 hydrocarbons involved in photochemical smog formation, J. Hi. Molecular Weight 56.11 . ; Flanagan, R.J., Detection and Identification of Volatile Organic Compounds in Blood by Headspace Gas Chromatography as an Aid to the Diagnosis of Solvent Abuse, J. Butene (C 4 H 8) is commonly represented by the molecule but-1-ene which has the structural formula Other isomers of butene can be drawn by changing the place of the double bond or by changing Chromatogr., 15, 1992, 105-120. class: Standard non-polar; Column length: 3.05 m; Column type: Packed; Description: 40C(5min)=>10C/min =>200C or 250C (60min); CAS no: 106989; Active phase: SE-30; Substrate: Supelcoport; Chromosorb; Data type: Linear RI; Authors: Peng, C.T. On dehydrogenation, normal butenes form butadiene, the principal starting material for synthetic rubber. The first two alkenes in Table 13.1 "Physical Properties of Some Selected Alkenes" —ethene and propene ( Figure 13.1 "Ethene and Propene" )—are most often called by … I. Updates? NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. 3. On treatment with water in the presence of catalysts, the butenes are transformed into secondary and tertiary butyl alcohols, which are used as commercial solvents. Linear Formula CH 3 CH=CHCH 3. The major part of the butenes is utilized for the production of octanes, which are important constituents of gasoline. NACRES NA.22 Molecular formula. Alternative Title: butylene. Gas Chromatogr., 6, 1968, 203-217. umn class: Semi-standard non-polar; Column length: 10 m; Column type: Packed; Start T: 26 C; CAS no: 106989; Active phase: Squalane; Data type: Kovats RI; Authors: Zulaica, J.; Guiochon, G., Analyse des hauts polymeres par chromatographie en phase gazeuse de leurs produits de pyrolyse. Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. ; Oomen, J.L.M.M. Akad. They are colourless gases that are present in crude oil as a minor constituent in quantities that are too small for viable extraction. The IUPAC and common names, respectively, of these chemical compounds are: Aliphatic Dienes and Dienophyls, Zh. Visit http://ilectureonline.com for more math and science lectures! Res. Both types show isomerism. ... and there is sufficient information available in ECHA’s databases for ECHA’s algorithms to generate a molecular structure. Chromatogr. Isomers for C4H8can be drawn for both types. The Z and E stand for the German words for “together” (zusammen) and “apart” (entgegen). 563-45-1 - YHQXBTXEYZIYOV-UHFFFAOYSA-N - 3-Methyl-1-butene - Similar structures search, synonyms, formulas, resource links, and other chemical information. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Soc. butene will have a double bond between 2 carbons while butane will not have any double bonds. Or . Predict the structure of the product formed. What is the Structural Formula of Propene and Butene?. Butene, also called Butylene, any of four isomeric compounds belonging to the series of olefinic hydrocarbons. EC Number 210-855-3. I. Chem., 55(10), 2000, 1091-1097, In original 1091-1097. ass: Standard non-polar; Column type: Capillary; CAS no: 106989; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Zenkevich, I.G., Influence of the Variations of Dynamics Molecular Parameterts on the Additivity of Chromatigraphic Retention Indices of Products of Organic Reactions Relative to Initial Reagents, Dokl. Chromatogr., 57, 1971, 1-10. umn class: Standard non-polar; Column length: 2.5 m; Column type: Packed; Start T: 50 C; CAS no: 106989; Active phase: Methyl Silicone; Carrier gas: Nitrogen; Substrate: Celite C-22; Data type: Normal alkane RI; Authors: Huguet, M., Kovats retention indices in the qualitative analysis of light hydrocarbons by gas chromatography, Journees internationales d'etude des methodes de separation immediate et de chromatographie, 1961, 69. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 40 m; Column type: Capillary; Start T: 50 C; CAS no: 106989; Active phase: SE-54; Carrier gas: N2; Data type: Normal alkane RI; Authors: Xieyun, H.; Maoqi, C.; Shiyan, Y., Gas Chromatographic analysis during the process of heptaldehyde production using 1-hexene, Chin. Gas Chromatogr., 6, 1968, 203-217. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 49 C; CAS no: 106989; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. This is done either by causing the butenes to react with isobutane or by dimerizing (combining two molecules of) butenes to form octenes, which, on hydrogenation (addition of hydrogen atoms to molecules), yield octanes. (Rus. Comm., 7(9), 1984, 542-544. umn class: Standard non-polar; Column diameter: 0.21 mm; Column length: 55 m; Column type: Capillary; Start T: 100 C; CAS no: 106989; Active phase: OV-1; Carrier gas: N2; Phase thickness: 0.35 um; Data type: Kovats RI; Authors: Anders, G.; Anders, K.; Engewald, W., Identification of non-branched alkenylcycloalkanes with a terminal double bond from retention index increments, Chromatographia, 20(2), 1985, 83-86. umn class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 10 m; Column type: Capillary; Start T: 160 C; CAS no: 106989; Active phase: PoraPLOT Q; Carrier gas: H2; Phase thickness: 10 um; Data type: Kovats RI; Authors: Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. Incompatible with strong oxidizing agents, halogens,halogen acids, metal salts, boron trifluoride, Images of the chemical structure of … The single lines represent single covalent bonds. Res. Chromatogr., 22(10), 1999, 565-588. umn class: Standard non-polar; Column diameter: 0.25 mm; Column length: 51 m; Column type: Capillary; Start T: 40 C; CAS no: 106989; Active phase: OV-101; Carrier gas: N2; Data type: Normal alkane RI; Authors: Li, H.; Deng, C., Qualitative analysis of light components of gasoline cracking using Kovats retention indices, J. try typing "butane chemical structure" or something like that So butane = C 4 H 10. ; Hileman, F.D. VI. Molecular Weight 56.11 . CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, Predicted data is generated using the US Environmental Protection Agency’s EPISuite™, Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the. It is a colorless flammable, easily condensed gas. Butenes are formed during the cracking (breaking down of large molecules) of petroleum to produce gasoline; they can also be prepared commercially by the catalytic dehydrogenation (elimination of hydrogen atoms from the molecule) of butanes. Chem., 47(14), 1975, 2385-2389. https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:48362, ACD/Labs Percepta Platform - PhysChem Module, US Environmental Protection Agency’s EPISuite™, Compounds with the same molecular formula, Search Google for structures with same skeleton. ; Amboni, C.; Yunes, R.A.; Heinzen, V.E.F., Semiempirical Topological Index: A Novel Molecular Descriptor for Quantitative Structure-Retention Relationship Studies, Internet Electronic Journal of Molecular Design, 2(1), 2003, 33-49. ass: Standard non-polar; Column length: 100 m; Column type: Capillary; CAS no: 106989; Active phase: PONA; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Perkin Elmer Instruments, Detailed hydrocarbon analysis (DHAX) Model 4015, 2002. ass: Standard non-polar; Column type: Capillary; CAS no: 106989; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Du, X., Quantitative structure-property relationship study on analysis of retention index of organic compound in gas chromatography, Chemical World (Chinese), 42(8), 2001, 403-406. ass: Standard non-polar; Column diameter: 0.26 mm; Column length: 52 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 50 C; End T: 220 C; CAS no: 106989; Active phase: OV-101; Carrier gas: N2; Data type: Normal alkane RI; Authors: Chupalov, A.A.; Zenkevich, I.G., Chromatographic Characterization of Structural Transformations of Organic Compounds in Diels-Alder Reaction. EC Number 209-673-7. Or. Butane and butene can be obtained from petroleum refining processes. 2-ethyl-1,1-difluoro-1-butene - C6H10F2, synthesis, structure, density, melting point, boiling point 2-Butene | CH3CHCHCH3 or C4H8 | CID 62695 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. II. ; Jacobs, P.A., On-Line Single Run Analysis of Effluents from a Fischer-Tropsch Reactor, J. Chromatogr. Butene: Butene is a hydrocarbon that has the chemical formula C 4 H 8. The formula is CH3CH2CH=CH2. Difference Between Butane and Butene Definition. The cis-2-Butene molecule contains a total of 11 bond (s) There are 3 non-H bond (s), 1 multiple bond (s) and 1 double bond (s). The carbon atoms in … ; Ding, S.F. A, 708, 1995, 283-291. umn class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 10 m; Column type: Capillary; Start T: 100 C; CAS no: 106989; Active phase: PoraPLOT Q; Carrier gas: H2; Phase thickness: 10 um; Data type: Kovats RI; Authors: Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. ; Hackett, J.; Anderson, R.R. of St. Petersburg Univ. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. https://www.britannica.com/science/butene. Let us know if you have suggestions to improve this article (requires login). Div Instrum Soc. Which looks like. class: Standard non-polar; Column diameter: 0.2 mm; Column length: 100 m; Column type: Capillary; Description: 5C(10min)=>5C/min=>50C(48min)=>1.5C/min=>195C(91min); CAS no: 106989; Active phase: Petrocol DH-100; Carrier gas: He; Data type: Kovats RI; Authors: Haagen-Smit Laboratory, Procedure for the detailed hydrocarbon analysis of gasolines by single column high efficiency (capillary) column gas chromatography, SOP NO. Khim. … ; Kail, S.; Spock, P.S., Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane, J. Hi. In isomerism, there are two types, structural and stereoisomerism. Products from Oil. ... Molecular formula. Butane: Butane is a hydrocarbon that has the chemical formula C 4 H 10. ; Lonneman, W.A., Characterization of non-methane volatile organic compounds at swine facilities in eastern North Carolina, Atm. Gas Chromatogr., , 1967, 506-510. umn class: Standard polar; Column length: 26 ft; Column type: Packed; Start T: 130 C; CAS no: 106989; Active phase: Carbowax 20M; Substrate: Diatoport P; Data type: Kovats RI; Authors: Widmer, H., Gas chromatographic identification of hydrocarbons using retention indices, J. 1-Butene. Nauk (Rus. Safety glasses. But-1-ene, CH 2 =CHCH 2 CH 3, reacts with bromine. Note that the molecular formula for ethene is C 2 H 4, whereas that for ethane is C 2 H 6. Cyclic isomers are also possible First two types of isomers belong to aliphatic organic compound types and third type is cyclic organic compounds. This page allows searchingof all reactions involving this species. A typical industrial 2-butene mixture is 70% (Z)-2-butene (cis-isomer) and 30% (E)-2-butene (trans-isomer).