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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-296.266929
Energy at 298.15K-296.272106
Nuclear repulsion energy213.386822
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 B3PW91/6-311G*
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 3217 3097 0.00      
2 Ag 1499 1443 0.00      
3 Ag 1059 1020 0.00      
4 Ag 760 732 0.00      
5 Au 335 323 0.00      
6 B1u 3216 3096 11.87      
7 B1u 1243 1197 59.22      
8 B1u 1101 1060 1.49      
9 B2g 993 956 0.00      
10 B2g 832 801 0.00      
11 B2u 1487 1432 2.22      
12 B2u 1163 1119 12.86      
13 B2u 1003 966 36.01      
14 B3g 1582 1523 0.00      
15 B3g 1331 1281 0.00      
16 B3g 646 622 0.00      
17 B3u 925 891 1.85      
18 B3u 244 235 58.75      

Unscaled Zero Point Vibrational Energy (zpe) 11317.4 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 10895.3 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 B3PW91/6-311G*
ABC
0.22979 0.21241 0.11038

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.258
C2 0.000 0.000 -1.258
N3 0.000 1.190 0.658
N4 0.000 -1.190 0.658
N5 0.000 -1.190 -0.658
N6 0.000 1.190 -0.658
H7 0.000 0.000 2.343
H8 0.000 0.000 -2.343

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51691.33301.33302.25642.25641.08503.6019
C22.51692.25642.25641.33301.33303.60191.0850
N31.33302.25642.38072.72061.31692.06313.2293
N41.33302.25642.38071.31692.72062.06313.2293
N52.25641.33302.72061.31692.38073.22932.0631
N62.25641.33301.31692.72062.38073.22932.0631
H71.08503.60192.06312.06313.22933.22934.6869
H83.60191.08503.22933.22932.06312.06314.6869

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 116.752 C1 N4 N5 116.752
C2 N5 N4 116.752 C2 N6 N3 116.752
N3 C1 N4 126.496 N3 C1 H7 116.752
N4 C1 H7 116.752 N5 C2 N6 126.496
N5 C2 H8 116.752 N6 C2 H8 116.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.033      
2 C 0.033      
3 N -0.147      
4 N -0.147      
5 N -0.147      
6 N -0.147      
7 H 0.261      
8 H 0.261      


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 -32.452 0.000 0.000
y 0.000 -43.857 0.000
z 0.000 0.000 -27.860
Traceless
 xyz
x 3.407 0.000 0.000
y 0.000 -13.701 0.000
z 0.000 0.000 10.294
Polar
3z2-r220.588
x2-y211.405
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.377 0.000 0.000
y 0.000 6.780 0.000
z 0.000 0.000 8.037


<r2> (average value of r2) Å2
<r2> 103.487
(<r2>)1/2 10.173