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

using model chemistry: B3LYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-296.335881
Energy at 298.15K-296.341068
Nuclear repulsion energy212.354966
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/6-31+G**
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 3229 3113 0.00      
2 Ag 1485 1432 0.00      
3 Ag 1049 1012 0.00      
4 Ag 755 728 0.00      
5 Au 340 328 0.00      
6 B1u 3228 3112 4.65      
7 B1u 1235 1191 57.41      
8 B1u 1095 1056 0.44      
9 B2g 991 955 0.00      
10 B2g 814 785 0.00      
11 B2u 1478 1425 1.57      
12 B2u 1153 1112 9.33      
13 B2u 995 959 34.85      
14 B3g 1564 1508 0.00      
15 B3g 1328 1281 0.00      
16 B3g 649 626 0.00      
17 B3u 928 895 1.44      
18 B3u 257 248 58.50      

Unscaled Zero Point Vibrational Energy (zpe) 11286.2 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 10882.2 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/6-31+G**
ABC
0.22710 0.21072 0.10930

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.267
C2 0.000 0.000 -1.267
N3 0.000 1.195 0.662
N4 0.000 -1.195 0.662
N5 0.000 -1.195 -0.662
N6 0.000 1.195 -0.662
H7 0.000 0.000 2.352
H8 0.000 0.000 -2.352

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53471.33981.33982.26932.26931.08503.6196
C22.53472.26932.26931.33981.33983.61961.0850
N31.33982.26932.39022.73221.32352.07033.2423
N41.33982.26932.39021.32352.73222.07033.2423
N52.26931.33982.73221.32352.39023.24232.0703
N62.26931.33981.32352.73222.39023.24232.0703
H71.08503.61962.07032.07033.24233.24234.7046
H83.61961.08503.24233.24232.07032.07034.7046

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 116.871 C1 N4 N5 116.871
C2 N5 N4 116.871 C2 N6 N3 116.871
N3 C1 N4 126.257 N3 C1 H7 116.871
N4 C1 H7 116.871 N5 C2 N6 126.257
N5 C2 H8 116.871 N6 C2 H8 116.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.009      
2 C 0.009      
3 N -0.089      
4 N -0.089      
5 N -0.089      
6 N -0.089      
7 H 0.169      
8 H 0.169      


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 -33.068 0.000 0.000
y 0.000 -45.007 0.000
z 0.000 0.000 -28.515
Traceless
 xyz
x 3.693 0.000 0.000
y 0.000 -14.216 0.000
z 0.000 0.000 10.522
Polar
3z2-r221.045
x2-y211.939
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.364 0.000 0.000
y 0.000 7.987 0.000
z 0.000 0.000 8.769


<r2> (average value of r2) Å2
<r2> 104.785
(<r2>)1/2 10.236