Dibenzo-18-crown-6

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

Quantity Value Units Method Reference Comment
Δfsolid-822.4 ± 2.4kJ/molCcbVasil'ev, Borodin, et al., 1992Authors Hf298_condensed=-787.7±2.4 kJ/mol
Quantity Value Units Method Reference Comment
Δcsolid-10477.8 ± 4.8kJ/molCcbVasil'ev, Borodin, et al., 1992Authors Hf298_condensed=-787.7±2.4 kJ/mol; Corresponding Δfsolid = -822.4 kJ/mol (simple calculation by NIST; no Washburn corrections)

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus435.KN/ASolov'ev, Govorkova, et al., 1986Uncertainty assigned by TRC = 0.2 K; TRC
Tfus434.KN/ABiancheria, Giusti, et al., 1985Uncertainty assigned by TRC = 1. K; TRC
Quantity Value Units Method Reference Comment
Δvap137.0 ± 7.4kJ/molCGCNichols, Orf, et al., 2000AC
Quantity Value Units Method Reference Comment
Δsub178.8 ± 6.9kJ/molCGC-DSCNichols, Orf, et al., 2000AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
57.45435.8Domanska, 1998AC

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:


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 compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
7.6PEBaker, Armen, et al., 1983LBLHLM
7.8PEBaker, Armen, et al., 1983Vertical value; LBLHLM
7.70PEKajitani, Sugimori, et al., 1979Vertical value; LLK

References

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

Vasil'ev, Borodin, et al., 1992
Vasil'ev, V.P.; Borodin, V.A.; Kopnyshev, S.B., Standard enthalpies of formation of certain crown-ethers, Russ. J. Phys. Chem. (Engl. Transl.), 1992, 66, 585-587, In original 1104. [all data]

Solov'ev, Govorkova, et al., 1986
Solov'ev, V.P.; Govorkova, L.V.; Raevskii, O.A., Determination of the Purity, Melting Point and Heat of Melting of Cyclic Polyethers, Izv. Akad. Nauk SSSR, Ser. Khim., 1986, No. 3, 691-2. [all data]

Biancheria, Giusti, et al., 1985
Biancheria, A.; Giusti, J.; Paoletti, P., Analysis by DSC of the KNCS/dibenzo-18-crown-6 system: phase diagram and enthalpy changes, Thermochim. Acta, 1985, 90, 109. [all data]

Nichols, Orf, et al., 2000
Nichols, Gary; Orf, Jennifer; Reiter, Sarah M.; Chickos, James; Gokel, George W., The vaporization enthalpies of some crown and polyethers by correlation gas chromatography, Thermochimica Acta, 2000, 346, 1-2, 15-28, https://doi.org/10.1016/S0040-6031(99)00405-0 . [all data]

Domanska, 1998
Domanska, U., Measurement and correlation of the solubility of crown ethers in selected organic solvents, Pol. J. Chem., 1998, 72, 5, 925. [all data]

Baker, Armen, et al., 1983
Baker, A.D.; Armen, G.H.; Funaro, S., Oral levels of crown ethers and related macrocycles studies by ultraviolet photoelectron spectroscopy: Relationship to complexation studies, J. Chem. Soc. Dalton Trans., 1983, 2519. [all data]

Kajitani, Sugimori, et al., 1979
Kajitani, M.; Sugimori, A.; Sato, N.; Seki, K.; Inokuchi, H.; Harada, Y., Ultraviolet photoelectron spectra of crown ethers, Bull. Chem. Soc. Jpn., 1979, 52, 2199. [all data]


Notes

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