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 (1H-Tetrazole, 5-methyl-)

using model chemistry: HF/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 HF/CEP-121G
 hartrees
Energy at 0K-51.803808
Energy at 298.15K-51.811555
Nuclear repulsion energy119.840516
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 HF/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 3944 3599 117.94      
2 A 3308 3018 6.14      
3 A 3176 2898 20.14      
4 A 1739 1587 73.64      
5 A 1630 1487 4.49      
6 A 1574 1436 2.47      
7 A 1530 1396 0.45      
8 A 1499 1368 35.00      
9 A 1427 1302 24.88      
10 A 1188 1084 15.56      
11 A 1172 1069 3.33      
12 A 1133 1034 29.90      
13 A 1105 1008 1.97      
14 A 1065 972 4.11      
15 A 722 659 5.22      
16 A 357 326 4.40      
17 A 3258 2973 21.19      
18 A 1625 1483 15.51      
19 A 1194 1090 2.61      
20 A 790 721 146.36      
21 A 775 707 7.74      
22 A 740 675 6.26      
23 A 288 263 0.17      
24 A 90 83 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 17664.4 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 16118.7 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 HF/CEP-121G
ABC
0.32781 0.11994 0.08926

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.168 -0.056 0.000
C2 0.000 0.565 0.000
C3 0.220 2.048 0.000
H4 0.772 2.358 0.881
H5 0.772 2.358 -0.881
H6 -0.741 2.540 0.000
N7 0.964 -0.389 0.000
N8 0.373 -1.623 0.000
N9 -0.896 -1.412 0.000
H10 1.951 -0.308 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 N7 N8 N9 H10
N11.32232.51963.21923.21922.63012.15772.19801.38303.1291
C21.32231.49862.14162.14162.10921.35652.22012.17062.1379
C32.51961.49861.08491.08491.08012.54763.67413.63502.9235
H43.21922.14161.08491.76151.76052.89114.09724.21563.0455
H53.21922.14161.08491.76151.76052.89114.09724.21563.0455
H62.63012.10921.08011.76051.76053.38924.30983.95463.9194
N72.15771.35652.54762.89112.89113.38921.36882.12320.9904
N82.19802.22013.67414.09724.09724.30981.36881.28682.0546
N91.38302.17063.63504.21564.21563.95462.12321.28683.0541
H103.12912.13792.92353.04553.04553.91940.99042.05463.0541

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 126.442 N1 C2 N7 107.305
N1 N9 N8 110.773 C2 N1 N9 106.694
C2 C3 H4 110.968 C2 C3 H5 110.968
C2 C3 H6 108.669 C2 N7 N8 109.101
C2 N7 H10 130.625 C3 C2 N7 126.253
H4 C3 H5 108.556 H4 C3 H6 108.815
H5 C3 H6 108.815 N7 N8 N9 106.128
N8 N7 H10 120.274
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.075      
2 C 0.163      
3 C -0.596      
4 H 0.182      
5 H 0.182      
6 H 0.219      
7 N -0.427      
8 N 0.025      
9 N -0.071      
10 H 0.398      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.920 4.527 0.000 6.686
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.448 -0.637 0.000
y -0.637 -38.578 0.000
z 0.000 0.000 -35.238
Traceless
 xyz
x 0.460 -0.637 0.000
y -0.637 -2.735 0.000
z 0.000 0.000 2.275
Polar
3z2-r24.550
x2-y22.130
xy-0.637
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.846 0.266 0.000
y 0.266 7.610 0.000
z 0.000 0.000 4.118


<r2> (average value of r2) Å2
<r2> 106.057
(<r2>)1/2 10.298