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

using model chemistry: TPSSh/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 TPSSh/6-31+G**
 hartrees
Energy at 0K-296.350103
Energy at 298.15K-296.355183
HF Energy-296.350103
Nuclear repulsion energy211.960890
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 TPSSh/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 3231 3110 0.00      
2 Ag 1466 1411 0.00      
3 Ag 1039 1000 0.00      
4 Ag 746 718 0.00      
5 Au 316 304 0.00      
6 B1u 3230 3109 6.85      
7 B1u 1222 1176 55.04      
8 B1u 1086 1045 0.30      
9 B2g 988 951 0.00      
10 B2g 809 778 0.00      
11 B2u 1475 1420 1.70      
12 B2u 1150 1107 7.41      
13 B2u 1000 963 32.03      
14 B3g 1556 1498 0.00      
15 B3g 1325 1276 0.00      
16 B3g 635 611 0.00      
17 B3u 923 888 1.82      
18 B3u 213 205 59.25      

Unscaled Zero Point Vibrational Energy (zpe) 11205.1 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 10784.9 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 TPSSh/6-31+G**
ABC
0.22688 0.20935 0.10888

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.271
C2 0.000 0.000 -1.271
N3 0.000 1.200 0.654
N4 0.000 -1.200 0.654
N5 0.000 -1.200 -0.654
N6 0.000 1.200 -0.654
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
C12.54231.34881.34882.26862.26861.08103.6233
C22.54232.26862.26861.34881.34883.62331.0810
N31.34882.26862.39912.73281.30872.07883.2369
N41.34882.26862.39911.30872.73282.07883.2369
N52.26861.34882.73281.30872.39913.23692.0788
N62.26861.34881.30872.73282.39913.23692.0788
H71.08103.62332.07882.07883.23693.23694.7042
H83.62331.08103.23693.23692.07882.07884.7042

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 117.212 C1 N4 N5 117.212
C2 N5 N4 117.212 C2 N6 N3 117.212
N3 C1 N4 125.575 N3 C1 H7 117.212
N4 C1 H7 117.212 N5 C2 N6 125.575
N5 C2 H8 117.212 N6 C2 H8 117.212
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.065      
2 C -0.065      
3 N -0.061      
4 N -0.061      
5 N -0.061      
6 N -0.061      
7 H 0.186      
8 H 0.186      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.316 0.000 0.000
y 0.000 7.995 0.000
z 0.000 0.000 8.794


<r2> (average value of r2) Å2
<r2> 104.915
(<r2>)1/2 10.243