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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-296.257829
Energy at 298.15K-296.262694
HF Energy-296.257829
Nuclear repulsion energy209.704026
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 BLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3134 3109 0.00      
2 Ag 1365 1354 0.00      
3 Ag 985 977 0.00      
4 Ag 729 723 0.00      
5 Au 293 290 0.00      
6 B1u 3133 3108 17.46      
7 B1u 1170 1160 54.09      
8 B1u 1056 1047 0.25      
9 B2g 957 949 0.00      
10 B2g 790 784 0.00      
11 B2u 1428 1416 3.43      
12 B2u 1102 1093 7.02      
13 B2u 911 903 24.45      
14 B3g 1476 1464 0.00      
15 B3g 1287 1276 0.00      
16 B3g 626 621 0.00      
17 B3u 886 879 0.49      
18 B3u 160 159 51.16      

Unscaled Zero Point Vibrational Energy (zpe) 10742.7 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 10655.7 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 BLYP/6-31G*
ABC
0.22244 0.20462 0.10658

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.282
C2 0.000 0.000 -1.282
N3 0.000 1.212 0.660
N4 0.000 -1.212 0.660
N5 0.000 -1.212 -0.660
N6 0.000 1.212 -0.660
H7 0.000 0.000 2.372
H8 0.000 0.000 -2.372

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.56311.36221.36222.28912.28911.09063.6537
C22.56312.28912.28911.36221.36223.65371.0906
N31.36222.28912.42452.76081.32052.09773.2657
N41.36222.28912.42451.32052.76082.09773.2657
N52.28911.36222.76081.32052.42453.26572.0977
N62.28911.36221.32052.76082.42453.26572.0977
H71.09063.65372.09772.09773.26573.26574.7443
H83.65371.09063.26573.26572.09772.09774.7443

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 117.136 C1 N4 N5 117.136
C2 N5 N4 117.136 C2 N6 N3 117.136
N3 C1 N4 125.727 N3 C1 H7 117.136
N4 C1 H7 117.136 N5 C2 N6 125.727
N5 C2 H8 117.136 N6 C2 H8 117.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.195      
2 C 0.195      
3 N -0.184      
4 N -0.184      
5 N -0.184      
6 N -0.184      
7 H 0.172      
8 H 0.172      


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 -32.329 0.000 0.000
y 0.000 -43.164 0.000
z 0.000 0.000 -28.166
Traceless
 xyz
x 3.336 0.000 0.000
y 0.000 -12.916 0.000
z 0.000 0.000 9.580
Polar
3z2-r219.160
x2-y210.834
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.012 0.000 0.000
y 0.000 6.752 0.000
z 0.000 0.000 8.256


<r2> (average value of r2) Å2
<r2> 106.223
(<r2>)1/2 10.306