holmium triiodide

Formula: HoI₃
Molecular weight: 545.64373
CAS Registry Number: 13813-41-7
Information on this page:
Other data available:
- Reaction thermochemistry data
Data at other public NIST sites:
- X-ray Photoelectron Spectroscopy Database, version 5.0
Options:
- Switch to SI units

Gas phase ion energetics data

Go To: Top, Ion clustering data, References, Notes

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV)	Method	Reference	Comment
9.6 ± 0.3	EI	Ajtony, Balthazarne, et al., 1987	LBLHLM
9.2 ± 0.2	EI	Hirayama and Castle, 1973	LLK

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
Ho⁺	16.2 ± 0.3	I₂+I	EI	Ajtony, Balthazarne, et al., 1987	LBLHLM
Ho⁺	16.7 ± 0.2	3I	EI	Hirayama and Castle, 1973	LLK
HoI⁺	13.0 ± 0.3	I₂	EI	Ajtony, Balthazarne, et al., 1987	LBLHLM
IHo⁺	13.2 ± 0.2	2I	EI	Hirayama and Castle, 1973	LLK
HoI₂⁺	10.4 ± 0.3	I	EI	Ajtony, Balthazarne, et al., 1987	LBLHLM
I₂Ho⁺	10.4 ± 0.2	I	EI	Hirayama and Castle, 1973	LLK

Ion clustering data

Go To: Top, Gas phase ion energetics data, References, Notes

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

HoI₄^- + HoI₃ = Ho₂I₇^-

By formula: HoI₄^- + HoI₃ = Ho₂I₇^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	45.40	kcal/mol	TDAs	Bencze, Kaposi, et al., 1988	gas phase; Data at 0 K. See also Pramann and Rademann, 1999; value altered from reference due to conversion from electron convention to ion convention

+ HoI₃ = ( • HoI₃)

By formula: I^- + HoI₃ = (I^- • HoI₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69.00	kcal/mol	TDAs	Bencze, Kaposi, et al., 1988	gas phase; Data at 0 K. See also Pramann and Rademann, 1999; value altered from reference due to conversion from electron convention to ion convention

References

Go To: Top, Gas phase ion energetics data, Ion clustering data, Notes

Ajtony, Balthazarne, et al., 1987
Ajtony, Z.; Balthazarne, V.K.; Kaposi, O., A HoI, parolgasi termodinamikajanak tomegspektrometrias vizsgalata, Magy. Kem. Foly., 1987, 93, 219. [all data]

Hirayama and Castle, 1973
Hirayama, C.; Castle, P.M., Mass spectra of rare earth triiodides, J. Phys. Chem., 1973, 77, 3110. [all data]

Bencze, Kaposi, et al., 1988
Bencze, L.; Kaposi, O.; Popovic, A.; Borshchevsky, Ya.A.; Sidorov, L.N., Molecule-Molecule and Negative Ion-Molecule Equilibria in the Saturated Vapor above CsI-HoI3 Mixtures, High Temp. Sci., 1988, 25, 199. [all data]

Pramann and Rademann, 1999
Pramann, A.; Rademann, K., Mass-spectrometric study of formation and stability of manganese and manganese oxide cluster anions, Int. J. Mass Spectrom., 1999, 187, 673-683, https://doi.org/10.1016/S1387-3806(98)14197-0 . [all data]

Notes

Go To: Top, Gas phase ion energetics data, Ion clustering data, References

Symbols used in this document:

AE Appearance energy

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
Customer support for NIST Standard Reference Data products.

AE	Appearance energy
Δ_rH°	Enthalpy of reaction at standard conditions