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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-52.440647
Energy at 298.15K-52.447881
HF Energy-51.780165
Nuclear repulsion energy115.627028
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/CEP-121G
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 3634 3546 80.37      
2 A 3123 3048 4.95      
3 A 2990 2918 20.33      
4 A 1529 1492 14.00      
5 A 1520 1483 41.00      
6 A 1464 1429 2.99      
7 A 1362 1329 30.68      
8 A 1330 1298 12.69      
9 A 1067 1041 1.34      
10 A 1038 1013 1.82      
11 A 991 967 5.39      
12 A 980 957 6.20      
13 A 884 863 8.65      
14 A 867 847 18.33      
15 A 651 636 2.67      
16 A 320 313 4.00      
17 A 3086 3011 17.79      
18 A 1504 1468 13.92      
19 A 1088 1061 0.09      
20 A 733 715 123.31      
21 A 658 642 0.02      
22 A 611 597 6.57      
23 A 224 218 0.30      
24 A 88 86 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 15870.0 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 15489.2 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/CEP-121G
ABC
0.29916 0.11351 0.08361

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.219 -0.043 0.000
C2 0.000 0.590 0.000
C3 0.227 2.092 0.000
H4 0.784 2.411 0.896
H5 0.784 2.411 -0.896
H6 -0.755 2.583 0.000
N7 0.992 -0.383 0.000
N8 0.433 -1.681 0.000
N9 -0.952 -1.463 0.000
H10 2.003 -0.282 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 N7 N8 N9 H10
N11.37332.57883.29153.29152.66662.23692.32661.44553.2303
C21.37331.51942.17542.17542.13131.38992.31232.26332.1843
C32.57881.51941.10191.10191.09822.59123.77923.74622.9646
H43.29152.17541.10191.79191.78922.94174.20374.33883.0884
H53.29152.17541.10191.79191.78922.94174.20374.33883.0884
H62.66662.13131.09821.78921.78923.44284.42694.05143.9766
N72.23691.38992.59122.94172.94173.44281.41312.22371.0158
N82.32662.31233.77924.20374.20374.42691.41311.40182.1030
N91.44552.26333.74624.33884.33884.05142.22371.40183.1820
H103.23032.18432.96463.08843.08843.97661.01582.10303.1820

picture of 1H-Tetrazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 126.050 N1 C2 N7 108.097
N1 N9 N8 109.585 C2 N1 N9 106.799
C2 C3 H4 111.183 C2 C3 H5 111.183
C2 C3 H6 107.942 C2 N7 N8 111.155
C2 N7 H10 129.799 C3 C2 N7 125.853
H4 C3 H5 108.809 H4 C3 H6 108.832
H5 C3 H6 108.832 N7 N8 N9 104.364
N8 N7 H10 119.046
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability