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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-296.323845
Energy at 298.15K-296.329027
Nuclear repulsion energy212.309818
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**
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 3222 3095 0.00      
2 Ag 1482 1424 0.00      
3 Ag 1051 1009 0.00      
4 Ag 757 727 0.00      
5 Au 340 327 0.00      
6 B1u 3220 3094 9.43      
7 B1u 1236 1187 60.63      
8 B1u 1096 1053 1.80      
9 B2g 994 955 0.00      
10 B2g 822 790 0.00      
11 B2u 1482 1424 2.48      
12 B2u 1156 1111 10.30      
13 B2u 990 951 33.44      
14 B3g 1568 1507 0.00      
15 B3g 1331 1279 0.00      
16 B3g 648 623 0.00      
17 B3u 927 891 0.59      
18 B3u 255 245 53.34      

Unscaled Zero Point Vibrational Energy (zpe) 11287.7 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 10845.2 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**
ABC
0.22733 0.21035 0.10926

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.265
C2 0.000 0.000 -1.265
N3 0.000 1.196 0.663
N4 0.000 -1.196 0.663
N5 0.000 -1.196 -0.663
N6 0.000 1.196 -0.663
H7 0.000 0.000 2.351
H8 0.000 0.000 -2.351

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53041.33931.33932.26882.26881.08553.6159
C22.53042.26882.26881.33931.33933.61591.0855
N31.33932.26882.39232.73491.32542.06893.2421
N41.33932.26882.39231.32542.73492.06893.2421
N52.26881.33932.73491.32542.39233.24212.0689
N62.26881.33931.32542.73492.39233.24212.0689
H71.08553.61592.06892.06893.24213.24214.7015
H83.61591.08553.24213.24212.06892.06894.7015

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 116.736 C1 N4 N5 116.736
C2 N5 N4 116.736 C2 N6 N3 116.736
N3 C1 N4 126.528 N3 C1 H7 116.736
N4 C1 H7 116.736 N5 C2 N6 126.528
N5 C2 H8 116.736 N6 C2 H8 116.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.256      
2 C 0.256      
3 N -0.205      
4 N -0.205      
5 N -0.205      
6 N -0.205      
7 H 0.155      
8 H 0.155      


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 -32.285 0.000 0.000
y 0.000 -43.325 0.000
z 0.000 0.000 -27.906
Traceless
 xyz
x 3.331 0.000 0.000
y 0.000 -13.229 0.000
z 0.000 0.000 9.898
Polar
3z2-r219.796
x2-y211.040
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.005 0.000 0.000
y 0.000 6.560 0.000
z 0.000 0.000 7.949


<r2> (average value of r2) Å2
<r2> 104.169
(<r2>)1/2 10.206