2H-Pyran, 3,4-dihydro-

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Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas-26.96 ± 0.22kcal/molCcrSteele, Chirico, et al., 1989ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
8.31350.Dorofeeva O.V., 1992p=1 bar.; GT
10.06100.
12.28150.
15.03200.
20.10273.15
22.03 ± 0.84298.15
22.17300.
29.964400.
36.960500.
42.818600.
47.674700.
51.730800.
55.146900.
58.0451000.
60.5141100.
62.6241200.
64.4381300.
65.9991400.
67.3491500.

Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Tboil359.7KN/AWeast and Grasselli, 1989BS
Tboil359.KN/AMoshkin, 1955Uncertainty assigned by TRC = 4. K; TRC
Tboil359.KN/ASchniepp and Geller, 1946Uncertainty assigned by TRC = 2. K; TRC
Tboil358.85KN/AAnonymous, 1942Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Tc561.7KN/AKobe and Mathews, 1970Uncertainty assigned by TRC = 0.83 K; TRC
Quantity Value Units Method Reference Comment
Pc45.00atmN/AKobe and Mathews, 1970Uncertainty assigned by TRC = 0.5000 atm; TRC
Quantity Value Units Method Reference Comment
Δvap8.346 ± 0.01kcal/molVSteele, Chirico, et al., 1989ALS
Δvap8.34kcal/molN/ASteele, Chirico, et al., 1989DRB

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

2H-Pyran, 3,4-dihydro- + Hydrogen = Tetrahydropyran

By formula: C5H8O + H2 = C5H10O

Quantity Value Units Method Reference Comment
Δr-24.69 ± 0.24kcal/molChydAllinger, Glaser, et al., 1981liquid phase; solvent: Hexane

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
IE (evaluated)8.35 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)206.9kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity199.2kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.37 ± 0.02PEBloch, Brogli, et al., 1978LLK
8.35PEPlanckaert, Doucet, et al., 1974LLK
8.34 ± 0.01PIWatanabe, Nakayama, et al., 1962RDSH
8.60PEBatich, Heilbronner, et al., 1976Vertical value; LLK

Mass spectrum (electron ionization)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center, 1990.
NIST MS number 113097

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


UV/Visible spectrum

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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UVVis spectrum
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Additional Data

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Source Eglinton, Jones, et al., 1952
Owner INEP CP RAS, NIST OSRD
Collection (C) 2007 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 4876
Instrument n.i.g.
Boiling point 86

Gas Chromatography

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
PackedApiezon L120.697.Bogoslovsky, Anvaer, et al., 1978Celite 545
PackedApiezon L160.708.Bogoslovsky, Anvaer, et al., 1978Celite 545
PackedApiezon L170.720.Jonas, Kratochvíl, et al., 1966Column length: 2. m

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-5748.Li and Zhao, 200930. m/0.25 mm/0.25 μm, Helium, 60. C @ 2. min, 10. K/min, 300. C @ 10. min
CapillaryDB-1664.Yu, Wu, et al., 199460. m/0.25 mm/1.0 μm, He, 40. C @ 5. min, 2. K/min, 260. C @ 60. min
CapillaryDB-1663.Yu, Wu, et al., 199460. m/0.25 mm/1.0 μm, He, 40. C @ 5. min, 2. K/min, 260. C @ 60. min
CapillaryDB-1671.Habu, Flath, et al., 19853. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tstart: 0. C; Tend: 250. C

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-5668.Shivashankar, Roy, et al., 201230. m/0.25 mm/0.25 μm, Helium; Program: 50 0C (2 min) 3 0C/min -> 200 0C (3 min) 10 0C/min -> 220 0C (8 min)
CapillarySE-30705.Vinogradov, 2004Program: not specified

Normal alkane RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryCarbowax 20M982.Vinogradov, 2004Program: not specified

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Steele, Chirico, et al., 1989
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Hossenlopp, I.A.; Smith, N.K., Determination of some pure compound ideal-gas enthalpies of formation, AIChE Symp. Ser., 1989, 85, 140-162. [all data]

Dorofeeva O.V., 1992
Dorofeeva O.V., Ideal gas thermodynamic properties of oxygen heterocyclic compounds. Part 2. Six-membered, seven-membered and eight-membered rings, Thermochim. Acta, 1992, 200, 121-150. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Moshkin, 1955
Moshkin, P.A., Vpr. Isolz. Pentozansoderzh. Syrya Tr. Vses. Soveshch. Riga, 1955, 1955, 225 (1958). [all data]

Schniepp and Geller, 1946
Schniepp, L.E.; Geller, H.H., Preparation of Dihydropyran. δ-Hydroxyvaleraldehyde and 1,5-Pentanediol from Tetrahydrofurfuryl Alcohol, J. Am. Chem. Soc., 1946, 68, 1646-8. [all data]

Anonymous, 1942
Anonymous, R., , Am. Pet. Inst. Res. Proj. 6, Natl. Bur. Stand., 1942. [all data]

Kobe and Mathews, 1970
Kobe, K.A.; Mathews, J.F., Critical Properties and Vapor Pressures of Some Organic Nitrogen and Oxygen Compounds, J. Chem. Eng. Data, 1970, 15, 182. [all data]

Allinger, Glaser, et al., 1981
Allinger, N.L.; Glaser, J.A.; Davis, H.E., Heats of hydrogenation of some vinyl ethers and related compounds, J. Org. Chem., 1981, 46, 658-661. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Bloch, Brogli, et al., 1978
Bloch, M.; Brogli, F.; Heilbronner, E.; Jones, T.B.; Prinzbach, H.; Schweikert, O., 138. Photoelectron spectra of unsaturated oxides. I. 1,4- dioxin and related systems, Helv. Chim. Acta, 1978, 61, 1388. [all data]

Planckaert, Doucet, et al., 1974
Planckaert, A.A.; Doucet, J.; Sandorfy, C., Comparative study of the vacuum ultraviolet absorption and photoelectron spectra of some simple ethers and thioethers, J. Chem. Phys., 1974, 60, 4846. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Batich, Heilbronner, et al., 1976
Batich, C.; Heilbronner, E.; Quinn, C.B.; Wiseman, J.R., The electronic structure of vinyl ethers and sulfides with interrupted conjugation examined by photoelectron spectroscopy, Helv. Chim. Acta, 1976, 59, 512. [all data]

Eglinton, Jones, et al., 1952
Eglinton, G.; Jones, E.R.H.; Whiting, M.C., Researches on acetylenic compounds. Part XXXVIII. A new method for the introduction of the acetylenic linkage, J. Chem. Soc., 1952, 2873-2882. [all data]

Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]

Jonas, Kratochvíl, et al., 1966
Jonas, J.; Kratochvíl, M.; Gross, H.; Janák, J., Über α-halogenäther XXV. Verwendung des Kovatsschen retentionsiondexsystems zur identifizierung von acetalen der tetrahydropyranreihe, Collect. Czech. Chem. Commun., 1966, 31, 6, 2399-2409, https://doi.org/10.1135/cccc19662399 . [all data]

Li and Zhao, 2009
Li, L.; Zhao, J., Determination of the volatile composition of Rhodobryum giganteum (Schwaegr.) Par. (Bryaceae) using solid-phase microextraction and gas chromatography / mass spectrometry (GC/MS), Molecules, 2009, 14, 6, 2195-2201, https://doi.org/10.3390/molecules14062195 . [all data]

Yu, Wu, et al., 1994
Yu, T.-H.; Wu, C.-M.; Ho, C.-T., Meat-like flavor generated from thermal interactions of glucose and alliin or deoxyalliin, J. Agric. Food Chem., 1994, 42, 4, 1005-1009, https://doi.org/10.1021/jf00040a032 . [all data]

Habu, Flath, et al., 1985
Habu, T.; Flath, R.A.; Mon, T.R.; Morton, J.F., Volatile components of Rooibos tea (Aspalathus linearis), J. Agric. Food Chem., 1985, 33, 2, 249-254, https://doi.org/10.1021/jf00062a024 . [all data]

Shivashankar, Roy, et al., 2012
Shivashankar, S.; Roy, T.K.; Moorthy, P.N.R., Headspace solid phase micro extraction and GC/MS analysis of the volatile components in seed and cake of Azadirachta indica A. juss, Chem. Bull. of Politechnika Univ. Timisoara, Romania, 2012, 57(71), 1, 1-6. [all data]

Vinogradov, 2004
Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References