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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-296.001104
Energy at 298.15K-296.005907
Nuclear repulsion energy210.680681
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 PBEPBE/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 3138 3095 0.00      
2 Ag 1409 1389 0.00      
3 Ag 1011 997 0.00      
4 Ag 732 722 0.00      
5 Au 273 269 0.00      
6 B1u 3137 3094 11.38      
7 B1u 1187 1170 53.06      
8 B1u 1061 1046 0.83      
9 B2g 958 945 0.00      
10 B2g 799 788 0.00      
11 B2u 1427 1407 3.16      
12 B2u 1121 1105 7.38      
13 B2u 976 963 25.93      
14 B3g 1500 1480 0.00      
15 B3g 1283 1265 0.00      
16 B3g 624 616 0.00      
17 B3u 887 875 0.97      
18 B3u 111 109 53.82      

Unscaled Zero Point Vibrational Energy (zpe) 10815.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 10667.6 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 PBEPBE/6-31G**
ABC
0.22491 0.20622 0.10758

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.269
C2 0.000 0.000 -1.269
N3 0.000 1.208 0.669
N4 0.000 -1.208 0.669
N5 0.000 -1.208 -0.669
N6 0.000 1.208 -0.669
H7 0.000 0.000 2.364
H8 0.000 0.000 -2.364

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53781.34891.34892.28342.28341.09503.6327
C22.53782.28342.28341.34891.34893.63271.0950
N31.34892.28342.41612.76161.33752.08153.2643
N41.34892.28342.41611.33752.76162.08153.2643
N52.28341.34892.76161.33752.41613.26432.0815
N62.28341.34891.33752.76162.41613.26432.0815
H71.09503.63272.08152.08153.26433.26434.7277
H83.63271.09503.26433.26432.08152.08154.7277

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 116.418 C1 N4 N5 116.418
C2 N5 N4 116.418 C2 N6 N3 116.418
N3 C1 N4 127.165 N3 C1 H7 116.418
N4 C1 H7 116.418 N5 C2 N6 127.165
N5 C2 H8 116.418 N6 C2 H8 116.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.221      
2 C 0.221      
3 N -0.192      
4 N -0.192      
5 N -0.192      
6 N -0.192      
7 H 0.163      
8 H 0.163      


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 -32.350 0.000 0.000
y 0.000 -43.082 0.000
z 0.000 0.000 -27.927
Traceless
 xyz
x 3.155 0.000 0.000
y 0.000 -12.944 0.000
z 0.000 0.000 9.789
Polar
3z2-r219.577
x2-y210.732
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.055 0.000 0.000
y 0.000 6.754 0.000
z 0.000 0.000 8.224


<r2> (average value of r2) Å2
<r2> 105.400
(<r2>)1/2 10.266