Abstract
Thorium-ligand bond disruption enthalpies (D(Th-R)) have been determined in the series of complexes Cp3ThR, where Cp = η5-C5H5 and R = an alkyl group. Thermochemical data were obtained by anaerobic batch-titration solution calorimetry from enthalpies of solution of the Cp3ThR complexes in toluene followed by enthalpies of alcoholysis with CF3CH2OH. D(Th-R)gas values obtained (2σ) were as follows: CH2Si(CH3)3, 86.1 (3.6) kcal/mol; CH3, 82.7 (1.1) kcal/mol; CH2C(CH3)3, 77.9 (3.0) kcal/mol; CH2C6H5, 77.9 (2.2) kcal/mol; CH(CH3)2, 77.3 (2.7) kcal/mol. These disruption enthalpies parallel but are significantly larger than those for the identical R functionalities in the Cp′ThR2 series, Cp′ = η5-(CH3)5C5.
| Original language | English |
|---|---|
| Pages (from-to) | 352-355 |
| Number of pages | 4 |
| Journal | Organometallics |
| Volume | 4 |
| Issue number | 2 |
| Publication status | Published - 1985 |
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ASJC Scopus subject areas
- Inorganic Chemistry
- Organic Chemistry
Cite this
Organo f-element thermochemistry. Thorium-Ligand bond disruption enthalpies in tris(cyclopentadienyl)thorium hydrocarbyls. / Sonnenberger, David C.; Marks, Tobin J; Marks, Tobin J.
In: Organometallics, Vol. 4, No. 2, 1985, p. 352-355.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Organo f-element thermochemistry. Thorium-Ligand bond disruption enthalpies in tris(cyclopentadienyl)thorium hydrocarbyls
AU - Sonnenberger, David C.
AU - Marks, Tobin J
AU - Marks, Tobin J.
PY - 1985
Y1 - 1985
N2 - Thorium-ligand bond disruption enthalpies (D(Th-R)) have been determined in the series of complexes Cp3ThR, where Cp = η5-C5H5 and R = an alkyl group. Thermochemical data were obtained by anaerobic batch-titration solution calorimetry from enthalpies of solution of the Cp3ThR complexes in toluene followed by enthalpies of alcoholysis with CF3CH2OH. D(Th-R)gas values obtained (2σ) were as follows: CH2Si(CH3)3, 86.1 (3.6) kcal/mol; CH3, 82.7 (1.1) kcal/mol; CH2C(CH3)3, 77.9 (3.0) kcal/mol; CH2C6H5, 77.9 (2.2) kcal/mol; CH(CH3)2, 77.3 (2.7) kcal/mol. These disruption enthalpies parallel but are significantly larger than those for the identical R functionalities in the Cp′ThR2 series, Cp′ = η5-(CH3)5C5.
AB - Thorium-ligand bond disruption enthalpies (D(Th-R)) have been determined in the series of complexes Cp3ThR, where Cp = η5-C5H5 and R = an alkyl group. Thermochemical data were obtained by anaerobic batch-titration solution calorimetry from enthalpies of solution of the Cp3ThR complexes in toluene followed by enthalpies of alcoholysis with CF3CH2OH. D(Th-R)gas values obtained (2σ) were as follows: CH2Si(CH3)3, 86.1 (3.6) kcal/mol; CH3, 82.7 (1.1) kcal/mol; CH2C(CH3)3, 77.9 (3.0) kcal/mol; CH2C6H5, 77.9 (2.2) kcal/mol; CH(CH3)2, 77.3 (2.7) kcal/mol. These disruption enthalpies parallel but are significantly larger than those for the identical R functionalities in the Cp′ThR2 series, Cp′ = η5-(CH3)5C5.
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M3 - Article
VL - 4
SP - 352
EP - 355
JO - Organometallics
JF - Organometallics
SN - 0276-7333
IS - 2
ER -