Coordinate Bond Energies and Inner Orbital Splitting in Some Tervalent Transition Metal Acetylacetonates

Wood, James L.; Jones, Mark M.

doi:10.1021/ic50021a017

Cited by 32 publications

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“…Compilation of the thermochemical data for iron(III) β-diketonates is given in Table . The experimental data on Δ f H m o (cr) were measured using either combustion calorimetry − or solution calorimetry. − Combustion calorimetry results are significantly more negative compared to solution calorimetry. The reason for this disagreement lies in the fact that not only Fe 2 O 3 but also a small amount of metallic Fe was often found in combustion products.…”

Section: Resultsmentioning

confidence: 99%

“…The standard molar enthalpy of sublimation Δ cr g H m o (T av ) derived for iron(III) 1,3diphenyl-1,3-propanedionate from vapor pressure temperature dependence (see Table S2) is referred to the average temperature T av (see Table 2, column 2). The sublimation enthalpy at the reference temperature, Δ cr g H m o (298.15 K) was calculated according to Kirchhoff's equation o av (7) The value…”

Section: Experimental Sublimation Enthalpy Of Iron(iii)mentioning

confidence: 99%

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“In Vitro” and “In Vivo” Diagnostic Check for the Thermochemistry of Metal–Organic Compounds

et al. 2022

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Volatile metal β-diketonates are of interest from both practical and theoretical perspectives (manufacturing of film materials, catalysis, and the nature of metal–ligand bonding). Knowledge of their reliable thermochemical properties is essential for effective applications. However, there is an unacceptable scattering of the available data on the enthalpies of formation. In this work, we proposed “in vitro” and “in vivo” diagnostic tools to verify the available enthalpies of formation in both the crystalline and gaseous states for metal tris-β-diketonates. The “in vitro” procedure involved high-level quantum-chemical calculations and was applied to define a consistent data set on the enthalpies of formation for iron(III) β-diketonates. This data set has provided the basis for “in vivo” structure–property-based diagnostics to evaluate the robustness of the thermochemical data for β-diketonate tris-complexes with metals other than iron.

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Section: Resultsmentioning

confidence: 99%

Section: Experimental Sublimation Enthalpy Of Iron(iii)mentioning

confidence: 99%

“In Vitro” and “In Vivo” Diagnostic Check for the Thermochemistry of Metal–Organic Compounds

et al. 2022

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“…Tables 2 and 3 present, for each run, the parameters obtained for a and b of equation (2) for Fe(ACAC) 3 , and for Fe(DPM) 3 . Table 4 presents the standard molar enthalpies of sublimation at the mean temperature T of the experimental temperature range (T 1 to T 2 ), D (18) and with the procedure that we have followed, in previous work, for some b-diketones (19) and copper-b-diketonates.…”

Section: Resultsmentioning

confidence: 99%

“…Tris(pentane-2,4-dionato)iron(III), Fe(ACAC) 3 , was prepared by the method of Debierne and Urbain. (12) Tris(2,2,6,6-tetramethylheptane-3,5-dionato)iron(III), Fe(DPM) 3 , was prepared as described by Hammond et al (13) Both complexes were purified by repeated vacuum sublimation.…”

Section: Methodsmentioning

confidence: 99%

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Vapour pressures and standard molar enthalpies of sublimation of two crystalline iron(III) β-diketonates. The mean molar (Fe-O) bond-dissociation enthalpies

Silva

Monte

Huinink

1996

The Journal of Chemical Thermodynamics

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Thermal properties of acetylacetone

Melia

Merrifield

1969

J. Appl. Chem.

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The vapour pressure of acetylacetone has been measured over the temperature range 297–398°k. The results are summarised as: Heat capacity measurements have been carried out on the enol form of acetylacetone over the temperature range 80–300° k. An estimate has been made of heat capacity values below 80° k. Entropy, enthalpy and free energy values have been derived and are listed at ten degree intervals. The melting point (254·80°0·05° k) and heat of fusion (144·8°0·5 abs.Jg−1) of the enol form have been determined. The results have been used in conjunction with previously published data to evaluate the entropies and the heats, entropies and free energies of formation of the keto and enol forms of acetylacetone in the gaseous and liquid phases at 298·16° k.

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Coordinate Bond Energies and Inner Orbital Splitting in Some Tervalent Transition Metal Acetylacetonates

Cited by 32 publications

References 0 publications

“In Vitro” and “In Vivo” Diagnostic Check for the Thermochemistry of Metal–Organic Compounds

“In Vitro” and “In Vivo” Diagnostic Check for the Thermochemistry of Metal–Organic Compounds

Vapour pressures and standard molar enthalpies of sublimation of two crystalline iron(III) β-diketonates. The mean molar (Fe-O) bond-dissociation enthalpies

Thermal properties of acetylacetone

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