Selected ATcT [1, 2] enthalpy of formation based on version 1.202 of the Thermochemical Network [3]

This version of ATcT results[3] was generated by additional expansion of version 1.176 in order to include species related to the thermochemistry of glycine[4].

Platinum

Formula: Pt (g)

CAS RN: 7440-06-4

ATcT ID: 7440-06-4*0

SMILES: [Pt]

InChI: InChI=1S/Pt

InChIKey: BASFCYQUMIYNBI-UHFFFAOYSA-N

Hills Formula: Pt1

2D Image:

Aliases: Pt; Platinum

Relative Molecular Mass: 195.0780 ± 0.0020

Δ_fH°(0 K)	Δ_fH°(298.15 K)	Uncertainty	Units
563.4	564.3	± 1.7	kJ/mol

3D Image of Pt (g)

spin ON spin OFF

Top contributors to the provenance of Δ_fH° of Pt (g)

The 4 contributors listed below account for 95.6% of the provenance of Δ_fH° of Pt (g).

Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. The Reference acts as a further link to the relevant references and notes for the measurement. The Measured Quantity is normaly given in the original units; in cases where we have reinterpreted the original measurement, the listed value may differ from that given by the authors. The quoted uncertainty is the a priori uncertainty used as input when constructing the initial Thermochemical Network, and corresponds either to the value proposed by the original authors or to our estimate; if an additional multiplier is given in parentheses immediately after the prior uncertainty, it corresponds to the factor by which the prior uncertainty needed to be multiplied during the ATcT analysis in order to make that particular measurement consistent with the prevailing knowledge contained in the Thermochemical Network.

Contribution (%)	TN ID	Reaction	Measured Quantity	Reference
63.1	10029.5	Pt (cr,l) → Pt (g)	Δ_rG°(1824 K) = 293.5 ± 2.1 kJ/mol	Plante 1970, 3rd Law
15.7	10029.4	Pt (cr,l) → Pt (g)	Δ_rG°(1994 K) = 269.6 ± 4.2 kJ/mol	Hampson 1961, 3rd Law, est unc
8.9	10029.1	Pt (cr,l) → Pt (g)	Δ_rG°(2237 K) = 231.1 ± 5.0 (×1.114) kJ/mol	Koch 1969, 3rd Law, est unc
7.7	10029.2	Pt (cr,l) → Pt (g)	Δ_rG°(1726 K) = 308.6 ± 6.0 kJ/mol	Dreger 1960, 3rd Law, est unc

Top 10 species with enthalpies of formation correlated to the Δ_fH° of Pt (g)

Please note: The correlation coefficients are obtained by renormalizing the off-diagonal elements of the covariance matrix by the corresponding variances.
The correlation coefficient is a number from -1 to 1, with 1 representing perfectly correlated species, -1 representing perfectly anti-correlated species, and 0 representing perfectly uncorrelated species.

Correlation Coefficent (%)	Species Name	Formula	Δ_fH°(0 K)	Δ_fH°(298.15 K)	Uncertainty	Units	Relative Molecular Mass	ATcT ID
100.0	Platinum atom cation	Pt+ (g)	1427.8	1428.3	± 1.7	kJ/mol	195.0775 ± 0.0020	20561-56-2*0
100.0	Platinum atom anion	Pt- (g)	358.4	358.9	± 1.7	kJ/mol	195.0785 ± 0.0020	40817-31-0*0
87.6	Platinum dimer	Pt2 (g)	823.5	822.5	± 3.9	kJ/mol	390.1560 ± 0.0040	12596-95-1*0
85.9	Platinum dimer anion	[Pt2]- (g)	640.3	639.8	± 3.9	kJ/mol	390.1565 ± 0.0040	153298-77-2*0
78.1	Platinum dimer cation	[Pt2]+ (g)	1661.0	1659.6	± 4.3	kJ/mol	390.1555 ± 0.0040	73146-08-4*0
45.0	Platinum hydride	PtH (g)	451.6	450.7	± 3.8	kJ/mol	196.0859 ± 0.0020	13966-55-7*0
34.4	Platinum hydride cation	[PtH]+ (g)	1363.1	1382.3	± 4.9	kJ/mol	196.0854 ± 0.0020	87882-39-1*0

Most Influential reactions involving Pt (g)

Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.

Influence Coefficient	TN ID	Reaction	Measured Quantity	Reference
0.993	10031.1	Pt- (g) → Pt (g)	Δ_rH°(0 K) = 17140.1 ± 0.8 cm-1	Bilodeau 1999, note unc
0.902	10032.1	Pt2 (g) → 2 Pt (g)	Δ_rH°(0 K) = 3.14 ± 0.02 eV	Taylor 1988
0.720	10035.2	PtH (g) → Pt (g) + H (g)	Δ_rH°(0 K) = 329.6 ± 3.9 kJ/mol	Irikura 2023
0.631	10029.5	Pt (cr,l) → Pt (g)	Δ_rG°(1824 K) = 293.5 ± 2.1 kJ/mol	Plante 1970, 3rd Law
0.558	10030.1	Pt (g) → Pt+ (g)	Δ_rH°(0 K) = 72257.8 ± 0.8 cm-1	Jakubeh 2000
0.441	10030.2	Pt (g) → Pt+ (g)	Δ_rH°(0 K) = 72256.6 ± 0.9 cm-1	Marijnissen 1995
0.157	10029.4	Pt (cr,l) → Pt (g)	Δ_rG°(1994 K) = 269.6 ± 4.2 kJ/mol	Hampson 1961, 3rd Law, est unc
0.089	10029.1	Pt (cr,l) → Pt (g)	Δ_rG°(2237 K) = 231.1 ± 5.0 (×1.114) kJ/mol	Koch 1969, 3rd Law, est unc
0.087	10032.2	Pt2 (g) → 2 Pt (g)	Δ_rG°(2607 K) = 4.9 ± 6.2 kJ/mol	Gupta 1981, 3rd Law
0.077	10029.2	Pt (cr,l) → Pt (g)	Δ_rG°(1726 K) = 308.6 ± 6.0 kJ/mol	Dreger 1960, 3rd Law, est unc
0.076	10035.1	PtH (g) → Pt (g) + H (g)	Δ_rH°(0 K) = 26926 ± 1000 cm-1	Kaving 1971, est unc
0.043	10029.3	Pt (cr,l) → Pt (g)	Δ_rG°(1910 K) = 281.9 ± 8.0 kJ/mol	Jones 1927, Langmuir 1914, 3rd Law, est unc
0.029	10035.4	PtH (g) → Pt (g) + H (g)	Δ_rH°(0 K) = 3.38 ± 0.20 eV	Huda 2006, est unc
0.029	10035.3	PtH (g) → Pt (g) + H (g)	Δ_rH°(0 K) = 3.31 ± 0.20 eV	Shen 2017, est unc
0.005	10032.4	Pt2 (g) → 2 Pt (g)	Δ_rH°(0 K) = 3.37 ± 0.25 eV	Lee 2009a, est unc
0.004	10031.2	Pt- (g) → Pt (g)	Δ_rH°(0 K) = 17141 ± 12 cm-1	Thogersen 1996a, note unc
0.002	10031.3	Pt- (g) → Pt (g)	Δ_rH°(0 K) = 17125 ± 18 cm-1	Gibson 1993, note unc
0.001	10032.5	Pt2 (g) → 2 Pt (g)	Δ_rH°(0 K) = 3.11 ± 0.5 eV	Anton 2002, est unc
0.001	10032.6	Pt2 (g) → 2 Pt (g)	Δ_rH°(0 K) = 3.17 ± 0.5 eV	Anton 2002, est unc
0.001	10032.7	Pt2 (g) → 2 Pt (g)	Δ_rH°(0 K) = 3.21 ± 0.5 eV	Anton 2002, est unc

References

1		B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner, Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited. J. Phys. Chem. A 108, 9979-9997 (2004) [DOI: 10.1021/jp047912y]
2		B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner, Active Thermochemical Tables: Thermochemistry for the 21^st Century. J. Phys. Conf. Ser. 16, 561-570 (2005) [DOI: 10.1088/1742-6596/16/1/078]
3		B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.202 of the Thermochemical Network (2024); available at ATcT.anl.gov
4		B. Ruscic and D. H. Bross Accurate and Reliable Thermochemistry by Data Analysis of Complex Thermochemical Networks using Active Thermochemical Tables: The Case of Glycine Thermochemistry Faraday Discuss. (in press) (2024) [DOI: 10.1039/D4FD00110A]
5		B. Ruscic, Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables. Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]
6		B. Ruscic and D. H. Bross, Thermochemistry Computer Aided Chem. Eng. 45, 3-114 (2019) [DOI: 10.1016/B978-0-444-64087-1.00001-2]

Formula

The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.

Uncertainties

The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [5] and Ruscic and Bross[6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.000₅ kJ/mol.

Website Functionality Credits

The reorganization of the website was developed and implemented by David H. Bross (ANL).
The find function is based on the complete Species Dictionary entries for the appropriate version of the ATcT TN.
The molecule images are rendered by Indigo-depict.
The XYZ renderings are based on Jmol: an open-source Java viewer for chemical structures in 3D. http://www.jmol.org/.

Acknowledgement

This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences under Contract No. DE-AC02-06CH11357.