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All results from a given calculation for C2H4N4 (1H-Tetrazole, 5-methyl-)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-296.907950
Energy at 298.15K-296.915406
HF Energy-295.824579
Nuclear repulsion energy228.562959
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3691 3486 103.49      
2 A 3235 3055 0.07      
3 A 3115 2942 6.66      
4 A 1587 1499 38.38      
5 A 1531 1446 0.09      
6 A 1447 1367 22.97      
7 A 1431 1352 1.32      
8 A 1343 1269 8.43      
9 A 1200 1133 5.17      
10 A 1155 1091 0.71      
11 A 1124 1062 20.61      
12 A 1074 1014 17.52      
13 A 1020 963 1.02      
14 A 1003 948 0.92      
15 A 691 653 3.81      
16 A 332 313 4.38      
17 A 3198 3021 3.01      
18 A 1511 1427 9.10      
19 A 1078 1018 1.62      
20 A 742 701 12.26      
21 A 710 670 21.71      
22 A 630 595 49.60      
23 A 270 255 0.22      
24 A 81 76 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 16597.8 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 15676.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G(2df,p)
ABC
0.32482 0.12239 0.09040

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

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