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Volumn 106, Issue 34, 2002, Pages 7927-7936

An assessment of the performance of high-level theoretical procedures in the computation of the heats of formation of small open-shell molecules

Author keywords

[No Author keywords available]

Indexed keywords

MEAN ABSOLUTE DEVIATIONS (MAD);

EID: 0037194948     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp0260752     Document Type: Article
Times cited : (113)

References (133)
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    • note
    • G3(MP2)-RAD was used in reference 9d without reoptimizing the HLCs.
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    • note
    • 18g note, "the results of assessments of methods for computing molecular thermochemical data can depend significantly on how the comparison with experiment is done...if theoretical input is included in the experimental data, the resulting analysis may differ."
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    • note
    • 21b that evaluating the RMP2(fu)/G3large and RHF/G3Xlarge energies with the (6d,10f) combination leads to better performance for G3-RAD and G3X-RAD on the G2/97 test set, perhaps through adding flexibility to the underlying sp basis. We therefore consistently use the (6d,10f) combination for all the energy evaluations in G3-RAD and G3X-RAD.
  • 72
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    • note
    • 2=C=C: were not included.
  • 73
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    • note
    • 3 was not included.
  • 74
    • 0011710882 scopus 로고    scopus 로고
    • note
    • Extrapolations using the three-point formula are performed on the total atomization energy, not on the constituent energies.
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    • NIST-JANAF thermochemical tables, 4th ed.
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    • note
    • -.
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    • note
    • 18f.
  • 105
    • 0011710883 scopus 로고    scopus 로고
    • G2
    • Standard total energies for the radicals in this study may also be found in (a) G2: Curtiss et al. and http://chemistry.anl.gov/compmat/ g2theory.htm.
    • Curtiss1
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    • 0011711643 scopus 로고    scopus 로고
    • G3
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    • 0011712123 scopus 로고    scopus 로고
    • G3X
    • (c) G3X: Curtiss et al. and http://chemistry.anl.gov/ compmat/g3xtheory.htm.
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    • G3(MP2)
    • (d) G3(MP2): Curtiss et al. and http://chemistry.anl.gov/compmat/g3theory.htm.
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    • G3X(MP2)
    • (e) G3X(MP2): Curtiss et al. and http://chemistry.anl.gov/compmat/g3xtheory.htm.
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    • note
    • 4a.
  • 111
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    • 5i are available from the website http://theochem.weizmann.ac.il/web/papers/w1w2.html.
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    • note
    • 2. The ·SH radical is actually included in the subset of inorganic hydrides for the G2/97 test set.
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    • note
    • 2a,e,3a,b,f partly because of the slightly different test sets, partly because of our use of updated experimental values for the heats of formation of some of the radicals, and partly because of our use of amended heats of formation for the Be and Si atoms.
  • 114
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    • note
    • 298 for the G2/97 test set.
  • 115
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    • note
    • 298 for the G2/97 test set.
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    • 1g and http://theochem.weizmann.ac.il/web/papers/w1chapter.html.
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    • note
    • 1 diagnostic has been proposed as an indication that a multireference electron correlation procedure may be necessary to recover a large fraction of the nondynamical electron correlation energy.


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