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

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-296.336937
Energy at 298.15K-296.342148
Nuclear repulsion energy212.882194
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 B3LYP/6-31G(2df,p)
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 3205 3093 0.00      
2 Ag 1482 1430 0.00      
3 Ag 1052 1015 0.00      
4 Ag 756 729 0.00      
5 Au 350 338 0.00      
6 B1u 3203 3091 9.22      
7 B1u 1234 1191 63.97      
8 B1u 1100 1061 2.63      
9 B2g 1012 976 0.00      
10 B2g 838 809 0.00      
11 B2u 1477 1426 2.63      
12 B2u 1156 1115 8.67      
13 B2u 988 953 34.11      
14 B3g 1561 1506 0.00      
15 B3g 1330 1283 0.00      
16 B3g 651 629 0.00      
17 B3u 938 906 0.32      
18 B3u 253 244 49.75      

Unscaled Zero Point Vibrational Energy (zpe) 11292.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10897.2 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 B3LYP/6-31G(2df,p)
ABC
0.22848 0.21159 0.10986

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

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 0.661
N4 0.000 -1.193 0.661
N5 0.000 -1.193 -0.661
N6 0.000 1.193 -0.661
H7 0.000 0.000 2.347
H8 0.000 0.000 -2.347

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52421.33571.33572.26262.26261.08503.6092
C22.52422.26262.26261.33571.33573.60921.0850
N31.33572.26262.38532.72681.32132.06553.2356
N41.33572.26262.38531.32132.72682.06553.2356
N52.26261.33572.72681.32132.38533.23562.0655
N62.26261.33571.32132.72682.38533.23562.0655
H71.08503.60922.06552.06553.23563.23564.6941
H83.60921.08503.23563.23562.06552.06554.6941

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 116.762 C1 N4 N5 116.762
C2 N5 N4 116.762 C2 N6 N3 116.762
N3 C1 N4 126.477 N3 C1 H7 116.762
N4 C1 H7 116.762 N5 C2 N6 126.477
N5 C2 H8 116.762 N6 C2 H8 116.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.143      
2 C 0.143      
3 N -0.151      
4 N -0.151      
5 N -0.151      
6 N -0.151      
7 H 0.159      
8 H 0.159      


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 -32.104 0.000 0.000
y 0.000 -42.705 0.000
z 0.000 0.000 -27.754
Traceless
 xyz
x 3.126 0.000 0.000
y 0.000 -12.776 0.000
z 0.000 0.000 9.650
Polar
3z2-r219.300
x2-y210.601
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.467 0.000 0.000
y 0.000 6.742 0.000
z 0.000 0.000 8.124


<r2> (average value of r2) Å2
<r2> 103.533
(<r2>)1/2 10.175