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silver iodide

Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
1093. - 1779.4.063446697.512-127.973Stull, 1947Coefficents calculated by NIST from author's data.

Constants of diatomic molecules

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through November, 1974

Symbols used in the table of constants
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 107Ag127I
D (45487) (176) 1 H (2.5)        D larrow X R 
Metropolis, 1939; Barrow and Mulcahy, 1948
C 44721 155.5 2 H 1.7        C larrow X R 44695 H
Metropolis, 1939; Barrow and Mulcahy, 1948
Continuous absorption above 42400 cm-1.
Metropolis, 1939
Continuous absorption 29800 - 33300 cm-1, maximum at 31500 cm-1.
Brice, 1931; Mulliken, 1937; Davidovits and Bellisio, 1969
B 0+ 31194.06 127.14 Z 4.255 3  0.040716 0.000572 3  [2.19E-08] 4  2.6712 B lrarrow X R 31153.42 Z
missing citation; Mulliken, 1937; Sastry and Rao, 1945; Barrow and Mulcahy, 1948, 2; Barrow, Morgan, et al., 1959; Barrow, Clements, et al., 1967
Continuous absorption above 24000 cm-1.
Metropolis and Beutler, 1939
A 23906 151.2 H         A larrow X R 23879 H
Metropolis and Beutler, 1939
X 1Sigma+ 0 206.52 Z 0.445  0.04486806 0.00014139 5.7E-08 8.47E-09 5  2.544621 6  
Hoeft, Lovas, et al., 1971


1Analysis Metropolis, 1939 uncertain. Barrow and Mulcahy, 1948 estimate nue ~46000 Barrow and Mulcahy, 1948, omegae ~165 Barrow and Mulcahy, 1948.
2Average of Metropolis, 1939 and Barrow and Mulcahy, 1948.
3From v=0,1,2 only; gammae= -31.5E-5. The vibrational levels converge rapidly to a maximum in the potential curve at ~510 cm-1 above v=0; see Barrow and Mulcahy, 1948, 2.
4D1 = 2.53E-8, D2 = 3.38E-8.
5Calculated from 4Be3/omegae2. From the rotational analysis of B-X bands D0= 0.96, D1= 0.90, D2= 0.85, D3= 0.840E-8.
6Microwave sp. 8
7Thermochemical value Brewer and Lofgren, 1950, Barrow, 1954.
8For value of eqQ(127I) see Hoeft, Lovas, et al., 1971.


Go To: Top, Phase change data, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Metropolis, 1939
Metropolis, N., A new ultraviolet band system of silver iodide, Phys. Rev., 1939, 55, 636. [all data]

Barrow and Mulcahy, 1948
Barrow, R.F.; Mulcahy, M.F.R., Excited States of Silver Bromide and Iodide, Nature (London), 1948, 162, 4113, 336-337. [all data]

Brice, 1931
Brice, B.A., Absorption band spectra of silver bromide and silver iodide vapors, Phys. Rev., 1931, 38, 658. [all data]

Mulliken, 1937
Mulliken, R.S., Low electronic states of simple heteropolar diatomic molecules: III. Hydrogen and univalent metal halides, Phys. Rev., 1937, 51, 310. [all data]

Davidovits and Bellisio, 1969
Davidovits, P.; Bellisio, J.A., Ultraviolet Absorption Cross Sections for the Thallium Halide and Silver Halide Vapors, J. Chem. Phys., 1969, 50, 8, 3560-3567. [all data]

Sastry and Rao, 1945
Sastry, C.R.; Rao, K.R., Note on the emission bands of the silver iodide molecule, Indian J. Phys., 1945, 19, 136. [all data]

Barrow and Mulcahy, 1948, 2
Barrow, R.F.; Mulcahy, M.F.R., The B-N band-system of silver iodide, Proc. Phys. Soc. London, 1948, 61, 99. [all data]

Barrow, Morgan, et al., 1959
Barrow, R.F.; Morgan, E.; Wright, C.V., Internuclear distances in gaseous silver halides, Proc. Chem. Soc. London, 1959, 303. [all data]

Barrow, Clements, et al., 1967
Barrow, R.F.; Clements, R.M.; Wright, C.V., Rotational analysis of bands of the B-X system of gaseous AgI, Trans. Faraday Soc., 1967, 63, 2874. [all data]

Metropolis and Beutler, 1939
Metropolis, N.; Beutler, H., Additional band systems of silver halide vapors and a new thermodynamical calculation of their dissociation energies, Phys. Rev., 1939, 55, 1113. [all data]

Hoeft, Lovas, et al., 1971
Hoeft, J.; Lovas, F.J.; Tiemann, F.; Torring, T., Die Mikrowellen-Rotationsspektren des AgCl, AgBr, and AgJ, Z. Naturforsch. A, 1971, 26, 240. [all data]

Brewer and Lofgren, 1950
Brewer, L.; Lofgren, N.L., The thermodynamics of gaseous cuprous chloride, monomer and trimer, J. Am. Chem. Soc., 1950, 72, 3038. [all data]

Barrow, 1954
Barrow, R.F., Maxima in the potential energy-distance functions of diatomic molecules, J. Chem. Phys., 1954, 22, 573. [all data]


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