When referring to the Spectral Atlas, please cite our publication:
Keller-Rudek, H., Moortgat, G. K., Sander, R., and Sörensen,
R.: The MPI-Mainz UV/VIS spectral atlas of gaseous molecules of
atmospheric interest, Earth Syst. Sci. Data, 5, 365–373, (2013),
DOI: 10.5194/essd-5-365-2013
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| DATAFILE: | VI4_Gregory(1994)_700K_230-500nm.txt |
| NAME: | vanadium tetraiodide |
| FORMULA: | VI4 |
| AUTHOR(YEAR): | Gregory(1994) |
| T: | 700K |
| λ: | 230-500nm |
| BIBLIOGRAPHY: |
N.W. Gregory, "UV-vis absorption spectrum of vanadium tetraiodide vapor and thermodynamicproperties of the vanadium iodides",
J. Chem. Eng. Data 39, 922—925 (1994);
DOI: 10.1021/je00016a065
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| COMMENTS: | Molar extinction coefficients were derived from measured absorbances using concentrations based on the equilibrium constants for the reaction VI4(s) +I2(g) ↔ VI4(g) of
K.O. Berry, R.R Smardzewski, R.E McCarley, Inorg. Chem. 8, 1994-1997 (1969); DOI: 10.1021/ic50079a034
The temperature dependence of the extinction coefficients at 580-850 K were expressed by the empirical relation
ε(λ, T) = a + bT with the following parameters a and b:
λ 10-3 a b
nm L mol-1 cm-1 L mol-1 cm-1 K-1
---------------------------------------------------------
230 38.9 -24.7
240 41.5 -21.7
250 42.0 -21.0
260 36.4 -16.9
270 29.5 -12.1
280 28.3 -12.9
290 25.8 -12.0
300 19.3 -6.37
310 17.4 -6.25
320 16.2 -6.45
330 15.8 -7.07
340 16.3 -8.49
350 15.3 -8.04
360 14.6 -7.90
370 15.4 -7.33
380 13.8 -7.72
390 14.5 -8.98
400 14.0 -8.64
410 15.4 -10.7
420 15.1 -10.7
430 12.9 -8.44
440 11.9 -7.52
450 15.3 -12.0
460 4.97 -0.84
470 15.6 -12.8
480 14.7 -11.3
490 11.6 -7.37
500 23.7 -21.4
The extiction coefficients for 700 K listed in Table 1 have been converted to absorption cross sections (conversion factor 3.8235×10-21) |
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