return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H4N4 (2H-Tetrazole, 2-methyl-)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-296.298020
Energy at 298.15K-296.305323
HF Energy-295.637720
Nuclear repulsion energy222.252549
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/SDD
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 3327 3211 0.08      
2 A 3204 3092 2.41      
3 A 3186 3076 11.65      
4 A 3067 2961 19.64      
5 A 1542 1488 14.96      
6 A 1519 1466 16.61      
7 A 1484 1433 1.95      
8 A 1349 1302 23.08      
9 A 1336 1289 0.06      
10 A 1261 1217 3.09      
11 A 1190 1149 17.83      
12 A 1173 1132 0.07      
13 A 1118 1079 7.95      
14 A 1004 969 3.02      
15 A 997 962 4.86      
16 A 933 900 8.39      
17 A 898 867 16.57      
18 A 798 771 22.88      
19 A 678 654 8.79      
20 A 650 627 13.29      
21 A 645 622 2.86      
22 A 348 336 5.46      
23 A 230 222 9.02      
24 A 76 73 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 16004.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 15448.9 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/SDD
ABC
0.29817 0.12117 0.08762

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.351 -1.250 0.000
C2 1.463 -0.631 0.000
N3 0.180 -1.168 -0.000
N4 1.491 0.759 -0.000
N5 0.154 1.189 0.000
N6 -0.594 -0.019 -0.000
H7 -2.433 -0.555 -0.899
H8 -2.405 1.014 -0.003
H9 -2.433 -0.550 0.903
C10 -2.078 -0.034 0.000

Atom - Atom Distances (Å)
  H1 C2 N3 N4 N5 N6 H7 H8 H9 C10
H11.08262.17322.18633.28353.19304.91825.26824.91944.5933
C21.08261.39121.39092.24252.14704.00004.20404.00073.5911
N32.17321.39122.33092.35721.38572.83083.38282.83312.5264
N42.18631.39092.33091.40452.22554.23513.90444.23413.6556
N53.28352.24252.35721.40451.42063.24722.56503.24522.5445
N63.19302.14701.38572.22551.42062.11632.08472.11651.4835
H74.91824.00002.83084.23513.24722.11631.80731.80221.0989
H85.26824.20403.38283.90442.56502.08471.80731.80721.0977
H94.91944.00072.83314.23413.24522.11651.80221.80721.0989
C104.59333.59112.52643.65562.54451.48351.09891.09771.0989

picture of 2H-Tetrazole, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 N3 122.430 H1 C2 N4 123.750
C2 N3 N6 101.273 C2 N4 N5 106.687
N3 C2 N4 113.820 N3 N6 N5 114.264
N3 N6 C10 123.379 N4 N5 N6 103.955
N5 N6 C10 122.357 N6 C10 H7 109.170
N6 C10 H8 106.781 N6 C10 H9 109.183
H7 C10 H8 110.729 H7 C10 H9 110.175
H8 C10 H9 110.722
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability