Osmocene

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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 by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Δfgas87.07kcal/molReviewMartinho SimõesThe enthalpy of formation relies on the assumption that OsO4(cr, yellow) is the only oxide formed but it is likely that the combustion products include a mixture of oxides.

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
MS - José A. Martinho Simões

Quantity Value Units Method Reference Comment
Tboil571.KN/ABaev, Barkatin, et al., 1979Uncertainty assigned by TRC = 0.00001 K; TRC
Quantity Value Units Method Reference Comment
Tfus506.8KN/ABaev, Barkatin, et al., 1979Crystal phase 1 phase; Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Δsub19.2 ± 0.41kcal/molN/ABaev and Barkatin, 1984AC
Δsub19.2 ± 0.41kcal/molCC-SBBaev and Barkatin, 1984Another value for the enthalpy of vaporization has been reported: 18.0 kcal/mol Fischer and Grubert, 1959; MS

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Reference Comment
13.5 ± 0.31535.Baev and Barkatin, 1984Based on data from 506. to 563. K.; AC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Reference Comment
17.4 ± 0.33393. to 506.Baev and Barkatin, 1984AC

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:
LL - Sharon G. Lias and Joel F. Liebman
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
~7.0EQRyan, Eyler, et al., 1992LL
7.6 ± 0.1EIMuller and D'Or, 1967RDSH

IR 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: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin WYANDOTTE CHEMICALS CORP., WYANDOTTE, MICHIGAN, USA
Source reference COBLENTZ NO. 3002
Date Not specified, most likely prior to 1970
Name(s) BIS-(CYCLOPENTADIENYL) OSMIUM
State SOLID (MINERAL OIL MULL)
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Path length
SPECTRAL CONTAMINATION DUE TO OIL AROUND 2900 CM-1
Resolution 4
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY
Melting point 226-227 C

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


References

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Notes

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

Martinho Simões
Martinho Simões, J.A., Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]

Baev, Barkatin, et al., 1979
Baev, A.K.; Barkatin, A.A.; Gubin, S.P.; Dyagileva, S.P., Thermodynamics of phase transitions and vapor state of some compounds of elements with incomplete d-shells in Vses. Konf. po Kalorimetrii i Khim. Termodinamike, 8th, Ivanovo, p 386-389, 1979. [all data]

Baev and Barkatin, 1984
Baev, A.K.; Barkatin, A.A., Russ. J. Phys. Chem., 1984, 58, 195. [all data]

Fischer and Grubert, 1959
Fischer, E.O.; Grubert, H., Chem. Ber., 1959, 92, 2302. [all data]

Ryan, Eyler, et al., 1992
Ryan, M.F.; Eyler, J.R.; Richardson, D.E., Adiabatic ionization energies, bond disruption enthalpies, and solvation free energies for gas-phase metallocenes and metallocenium ions, J. Am. Chem. Soc., 1992, 114, 8611. [all data]

Muller and D'Or, 1967
Muller, J.; D'Or, L., Massenspektrometrische Untersuchungen an Dicyclopentadienylkomplexen von Ubergangsmetallen, J.Organometal. Chem., 1967, 10, 313. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, References