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

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-296.020413
Energy at 298.15K-296.025242
Nuclear repulsion energy210.705080
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/cc-pVDZ
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 3121 3103 0.00      
2 Ag 1410 1402 0.00      
3 Ag 1012 1006 0.00      
4 Ag 730 726 0.00      
5 Au 273 271 0.00      
6 B1u 3120 3102 10.33      
7 B1u 1185 1178 52.48      
8 B1u 1064 1058 1.96      
9 B2g 957 952 0.00      
10 B2g 806 801 0.00      
11 B2u 1414 1406 2.82      
12 B2u 1121 1114 7.10      
13 B2u 982 977 26.39      
14 B3g 1504 1495 0.00      
15 B3g 1267 1259 0.00      
16 B3g 622 619 0.00      
17 B3u 885 879 1.06      
18 B3u 116 115 50.87      

Unscaled Zero Point Vibrational Energy (zpe) 10793.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 10731.3 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/cc-pVDZ
ABC
0.22552 0.20585 0.10762

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.266
C2 0.000 0.000 -1.266
N3 0.000 1.209 0.668
N4 0.000 -1.209 0.668
N5 0.000 -1.209 -0.668
N6 0.000 1.209 -0.668
H7 0.000 0.000 2.368
H8 0.000 0.000 -2.368

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53211.34911.34912.28072.28071.10203.6341
C22.53212.28072.28071.34911.34913.63411.1020
N31.34912.28072.41832.76261.33562.08643.2678
N41.34912.28072.41831.33562.76262.08643.2678
N52.28071.34912.76261.33562.41833.26782.0864
N62.28071.34911.33562.76262.41833.26782.0864
H71.10203.63412.08642.08643.26783.26784.7361
H83.63411.10203.26783.26782.08642.08644.7361

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 116.326 C1 N4 N5 116.326
C2 N5 N4 116.326 C2 N6 N3 116.326
N3 C1 N4 127.348 N3 C1 H7 116.326
N4 C1 H7 116.326 N5 C2 N6 127.348
N5 C2 H8 116.326 N6 C2 H8 116.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.150      
2 C 0.150      
3 N -0.102      
4 N -0.102      
5 N -0.102      
6 N -0.102      
7 H 0.054      
8 H 0.054      


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 -32.234 0.000 0.000
y 0.000 -42.718 0.000
z 0.000 0.000 -28.210
Traceless
 xyz
x 3.230 0.000 0.000
y 0.000 -12.497 0.000
z 0.000 0.000 9.266
Polar
3z2-r218.533
x2-y210.485
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.200 0.000 0.000
y 0.000 6.640 0.000
z 0.000 0.000 8.392


<r2> (average value of r2) Å2
<r2> 105.351
(<r2>)1/2 10.264