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All results from a given calculation for C2H2N4 (sym-tetrazine)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-296.216612
Energy at 298.15K-296.221782
Nuclear repulsion energy212.922643
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 B3PW91/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3238 3109 0.00      
2 Ag 1511 1451 0.00      
3 Ag 1064 1022 0.00      
4 Ag 757 726 0.00      
5 Au 331 318 0.00      
6 B1u 3237 3108 4.50      
7 B1u 1246 1196 56.69      
8 B1u 1097 1053 0.64      
9 B2g 992 952 0.00      
10 B2g 819 786 0.00      
11 B2u 1484 1425 1.54      
12 B2u 1164 1118 9.23      
13 B2u 1032 991 35.64      
14 B3g 1583 1520 0.00      
15 B3g 1328 1275 0.00      
16 B3g 647 621 0.00      
17 B3u 929 892 1.72      
18 B3u 241 232 59.30      

Unscaled Zero Point Vibrational Energy (zpe) 11348.6 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 10895.8 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 B3PW91/6-31+G**
ABC
0.22877 0.21146 0.10989

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.262
C2 0.000 0.000 -1.262
N3 0.000 1.193 0.659
N4 0.000 -1.193 0.659
N5 0.000 -1.193 -0.659
N6 0.000 1.193 -0.659
H7 0.000 0.000 2.348
H8 0.000 0.000 -2.348

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52481.33691.33692.26172.26171.08543.6102
C22.52482.26172.26171.33691.33693.61021.0854
N31.33692.26172.38602.72591.31812.06763.2349
N41.33692.26172.38601.31812.72592.06763.2349
N52.26171.33692.72591.31812.38603.23492.0676
N62.26171.33691.31812.72592.38603.23492.0676
H71.08543.61022.06762.06763.23493.23494.6956
H83.61021.08543.23493.23492.06762.06764.6956

picture of sym-tetrazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 N6 116.827 C1 N4 N5 116.827
C2 N5 N4 116.827 C2 N6 N3 116.827
N3 C1 N4 126.346 N3 C1 H7 116.827
N4 C1 H7 116.827 N5 C2 N6 126.346
N5 C2 H8 116.827 N6 C2 H8 116.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.056      
2 C -0.056      
3 N -0.066      
4 N -0.066      
5 N -0.066      
6 N -0.066      
7 H 0.188      
8 H 0.188      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.851 0.000 0.000
y 0.000 -44.569 0.000
z 0.000 0.000 -28.159
Traceless
 xyz
x 3.513 0.000 0.000
y 0.000 -14.064 0.000
z 0.000 0.000 10.550
Polar
3z2-r221.101
x2-y211.718
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.274 0.000 0.000
y 0.000 7.853 0.000
z 0.000 0.000 8.638


<r2> (average value of r2) Å2
<r2> 104.143
(<r2>)1/2 10.205