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

using model chemistry: B3LYP/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-296.435158
Energy at 298.15K-296.440382
HF Energy-296.435158
Nuclear repulsion energy213.430509
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/Def2TZVPP
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 3082 0.00      
2 Ag 1477 1422 0.00      
3 Ag 1052 1013 0.00      
4 Ag 756 728 0.00      
5 Au 355 341 0.00      
6 B1u 3201 3081 7.31      
7 B1u 1238 1191 63.11      
8 B1u 1103 1062 0.82      
9 B2g 1008 970 0.00      
10 B2g 837 805 0.00      
11 B2u 1480 1425 2.00      
12 B2u 1151 1108 9.73      
13 B2u 970 934 35.72      
14 B3g 1560 1502 0.00      
15 B3g 1331 1281 0.00      
16 B3g 656 631 0.00      
17 B3u 938 903 1.38      
18 B3u 258 249 54.62      

Unscaled Zero Point Vibrational Energy (zpe) 11286.1 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 10864.0 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/Def2TZVPP
ABC
0.22909 0.21319 0.11043

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.264
C2 0.000 0.000 -1.264
N3 0.000 1.191 0.650
N4 0.000 -1.191 0.650
N5 0.000 -1.191 -0.650
N6 0.000 1.191 -0.650
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
C12.52881.34031.34032.25432.25431.07873.6075
C22.52882.25432.25431.34031.34033.60751.0787
N31.34032.25432.38192.71311.29912.07043.2210
N41.34032.25432.38191.29912.71312.07043.2210
N52.25431.34032.71311.29912.38193.22102.0704
N62.25431.34031.29912.71312.38193.22102.0704
H71.07873.60752.07042.07043.22103.22104.6863
H83.60751.07873.22103.22102.07042.07044.6863

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 117.306 C1 N4 N5 117.306
C2 N5 N4 117.306 C2 N6 N3 117.306
N3 C1 N4 125.389 N3 C1 H7 117.306
N4 C1 H7 117.306 N5 C2 N6 125.389
N5 C2 H8 117.306 N6 C2 H8 117.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.036      
2 C 0.036      
3 N -0.095      
4 N -0.095      
5 N -0.095      
6 N -0.095      
7 H 0.154      
8 H 0.154      


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 -32.732 0.000 0.000
y 0.000 -44.076 0.000
z 0.000 0.000 -28.322
Traceless
 xyz
x 3.467 0.000 0.000
y 0.000 -13.549 0.000
z 0.000 0.000 10.082
Polar
3z2-r220.163
x2-y211.344
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.293 0.000 0.000
y 0.000 7.596 0.000
z 0.000 0.000 8.696


<r2> (average value of r2) Å2
<r2> 103.657
(<r2>)1/2 10.181