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: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-53.091067
Energy at 298.15K-53.098584
Nuclear repulsion energy119.379457
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 B1B95/CEP-31G
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 3353 3210 0.06      
2 A 3226 3089 5.45      
3 A 3203 3067 20.13      
4 A 3103 2971 22.43      
5 A 1511 1447 13.41      
6 A 1491 1428 21.00      
7 A 1467 1404 11.78      
8 A 1429 1368 4.45      
9 A 1411 1351 16.33      
10 A 1285 1230 15.67      
11 A 1269 1215 9.56      
12 A 1201 1150 9.28      
13 A 1157 1108 0.35      
14 A 1133 1085 12.49      
15 A 1011 968 6.71      
16 A 997 955 21.35      
17 A 989 947 6.12      
18 A 888 850 23.18      
19 A 707 677 10.51      
20 A 701 671 8.66      
21 A 677 648 1.86      
22 A 354 339 4.97      
23 A 245 234 8.90      
24 A 90 86 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 16447.7 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 15748.7 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 B1B95/CEP-31G
ABC
0.31045 0.12580 0.09109

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.340 -1.221 0.000
C2 1.442 -0.619 0.000
N3 0.190 -1.145 -0.000
N4 1.444 0.765 0.000
N5 0.151 1.149 -0.000
N6 -0.577 -0.017 -0.000
H7 -2.406 -0.557 -0.896
H8 -2.384 1.005 -0.002
H9 -2.406 -0.553 0.898
C10 -2.042 -0.036 0.000

Atom - Atom Distances (Å)
  H1 C2 N3 N4 N5 N6 H7 H8 H9 C10
H11.08132.15132.17803.22543.15574.87545.22264.87644.5390
C21.08131.35761.38352.18832.10653.95124.15653.95183.5317
N32.15131.35762.28462.29401.36402.80863.35452.81042.4921
N42.17801.38352.28461.34862.16744.16833.83624.16753.5767
N53.22542.18832.29401.34861.37493.20212.53993.20062.4927
N63.15572.10651.36402.16741.37492.10682.07652.10691.4646
H74.87543.95122.80864.16833.20212.10681.80001.79401.0985
H85.22264.15653.35453.83622.53992.07651.80001.80001.0965
H94.87643.95182.81044.16753.20062.10691.79401.80001.0985
C104.53903.53172.49213.57672.49271.46461.09851.09651.0985

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 123.383 H1 C2 N4 123.708
C2 N3 N6 101.429 C2 N4 N5 106.439
N3 C2 N4 112.909 N3 N6 N5 113.766
N3 N6 C10 123.495 N4 N5 N6 105.457
N5 N6 C10 122.740 N6 C10 H7 109.742
N6 C10 H8 107.476 N6 C10 H9 109.752
H7 C10 H8 110.182 H7 C10 H9 109.487
H8 C10 H9 110.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.287      
2 C -0.509      
3 N 0.165      
4 N 0.021      
5 N -0.001      
6 N -0.135      
7 H 0.212      
8 H 0.230      
9 H 0.212      
10 C -0.481      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.686 -1.770 0.000 3.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.259 -4.957 -0.000
y -4.957 -41.590 -0.000
z -0.000 -0.000 -34.252
Traceless
 xyz
x 9.662 -4.957 -0.000
y -4.957 -10.335 -0.000
z -0.000 -0.000 0.673
Polar
3z2-r21.345
x2-y213.331
xy-4.957
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.452 -0.096 -0.000
y -0.096 6.692 0.000
z -0.000 0.000 3.712


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000