Cyclopentane, 1,2-dimethyl-

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Condensed 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 by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid64.51cal/mol*KN/AHuffman, Parks, et al., 1931Extrapolation below 90 K, 69.75 J/mol*K.

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
44.79294.2Huffman, Parks, et al., 1931T = 93 to 294 K. Value is unsmoothed experimental datum.

Phase change data

Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), References, Notes

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil370.KN/AChavanne and Devogel, 1928Uncertainty assigned by TRC = 7. K; TRC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
1.532154.1Huffman, Parks, et al., 1931DH

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
9.94154.1Huffman, Parks, et al., 1931DH

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Mass spectrum (electron ionization)

Go To: Top, Condensed phase thermochemistry data, Phase change data, References, Notes

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 D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY
NIST MS number 62738

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References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes

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

Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]

Chavanne and Devogel, 1928
Chavanne, G.; Devogel, L., Cyclopentanic Compounds. A New Preparation of 1,2-Dimethylcyclopentane, Bull. Soc. Chim. Belg., 1928, 37, 141-52. [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References