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

using model chemistry: B3PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-296.303137
Energy at 298.15K-296.308346
Nuclear repulsion energy213.814696
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/cc-pVTZ
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 3202 3079 0.00      
2 Ag 1496 1439 0.00      
3 Ag 1064 1023 0.00      
4 Ag 756 727 0.00      
5 Au 344 330 0.00      
6 B1u 3201 3078 7.51      
7 B1u 1244 1196 63.04      
8 B1u 1102 1060 1.61      
9 B2g 1010 971 0.00      
10 B2g 841 809 0.00      
11 B2u 1482 1425 2.31      
12 B2u 1160 1115 9.59      
13 B2u 1001 963 36.85      
14 B3g 1577 1516 0.00      
15 B3g 1327 1276 0.00      
16 B3g 651 626 0.00      
17 B3u 938 902 1.53      
18 B3u 241 231 54.22      

Unscaled Zero Point Vibrational Energy (zpe) 11317.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 10882.9 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/cc-pVTZ
ABC
0.23056 0.21339 0.11082

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.257
C2 0.000 0.000 -1.257
N3 0.000 1.188 0.657
N4 0.000 -1.188 0.657
N5 0.000 -1.188 -0.657
N6 0.000 1.188 -0.657
H7 0.000 0.000 2.340
H8 0.000 0.000 -2.340

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51421.33081.33082.25232.25231.08323.5973
C22.51422.25232.25231.33081.33083.59731.0832
N31.33082.25232.37522.71411.31332.06033.2236
N41.33082.25232.37521.31332.71412.06033.2236
N52.25231.33082.71411.31332.37523.22362.0603
N62.25231.33081.31332.71412.37523.22362.0603
H71.08323.59732.06032.06033.22363.22364.6805
H83.59731.08323.22363.22362.06032.06034.6805

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 116.822 C1 N4 N5 116.822
C2 N5 N4 116.822 C2 N6 N3 116.822
N3 C1 N4 126.357 N3 C1 H7 116.822
N4 C1 H7 116.822 N5 C2 N6 126.357
N5 C2 H8 116.822 N6 C2 H8 116.822
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.040      
2 C 0.040      
3 N -0.089      
4 N -0.089      
5 N -0.089      
6 N -0.089      
7 H 0.138      
8 H 0.138      


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 -32.385 0.000 0.000
y 0.000 -43.326 0.000
z 0.000 0.000 -27.852
Traceless
 xyz
x 3.204 0.000 0.000
y 0.000 -13.207 0.000
z 0.000 0.000 10.003
Polar
3z2-r220.006
x2-y210.941
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.995 0.000 0.000
y 0.000 7.244 0.000
z 0.000 0.000 8.471


<r2> (average value of r2) Å2
<r2> 103.041
(<r2>)1/2 10.151