DOI: 10.1063/1.1731954. Energy Value of the Octahedral-Tetrahedral Coordination Change

Energy Value of the Octahedral-Tetrahedral Coordination Change

10.1063/1.1731954

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The equilibrium oct(CoCl2Py4) = tet(CoCl2Py2) +2Py for cobaltous chloride solutions in pyridine is followed over a temperature range, yielding ΔH = +13.4 kcal/mole. At 38°C the equilibrium constant is estimated as (CoPy2Cl2) (Py)2/(CoCl2Py4) = 0.04, and the ΔS for the reaction is about 36.7 eu. It is pointed out that the average bond strength in the tetrahedral species is about 17 kcal greater than for the same groups in the octahedral configuration, and that the strength of binding and the dissociation energy for the two ligands released according to the equation above are significant factors in determining the equilibrium reaction. Detailed arguments are given against the view that the relative stability of octahedrally and tetrahedrally coordinated complexes, such as the pair discussed, reflect principally the difference in ``ligand-field stabilization'' of the nonbonding d electrons between octahedral and tetrahedral fields.

Bibliography

Katzin, L. I. (1961). Energy Value of the Octahedral-Tetrahedral Coordination Change. The Journal of Chemical Physics, 35(2), 467â472.

Authors 1

Leonard I. Katzin (first)

References 25 Referenced 27

{'key': '2024020820034301000_r1'}
10.1016/0022-3697(57)90034-3 / J. Phys. Chem. Solids (1957)
10.1016/0022-3697(57)90035-5 / J. Phys. Chem. Solids (1957)
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10.1021/ja01168a025 / J. Am. Chem. Soc. (1950)
10.1021/ja01108a012 / J. Am. Chem. Soc. (1953)
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10.1021/ja01111a061 / J. Am. Chem. Soc. (1953)
10.1016/0022-1902(56)80006-7 / J. Inorg. & Nuclear Chem. (1956)
{'key': '2024020820034301000_r10'}
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{'key': '2024020820034301000_r20'}
10.1021/ja01168a026 / J. Am. Chem. Soc. (1950)
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10.1021/ja01358a004 / J. Am. Chem. Soc. (1931)
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Dates

Type	When
Created	21 years, 1 month ago (July 20, 2004, 6:07 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 3:03 p.m.)
Indexed	1 year ago (Aug. 14, 2024, 4:23 a.m.)
Issued	64 years, 1 month ago (Aug. 1, 1961)
Published	64 years, 1 month ago (Aug. 1, 1961)
Published Print	64 years, 1 month ago (Aug. 1, 1961)

Funders 0

None

BibTeX

@article{Katzin_1961, title={Energy Value of the Octahedral-Tetrahedral Coordination Change}, volume={35}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1731954}, DOI={10.1063/1.1731954}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Katzin, Leonard I.}, year={1961}, month=aug, pages={467–472} }

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