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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-296.222596
Energy at 298.15K-296.227766
Nuclear repulsion energy213.308641
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 B1B95/6-31G**
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 3238 3091 0.00      
2 Ag 1519 1450 0.00      
3 Ag 1070 1022 0.00      
4 Ag 752 718 0.00      
5 Au 332 317 0.00      
6 B1u 3236 3090 8.55      
7 B1u 1250 1194 59.71      
8 B1u 1094 1045 2.89      
9 B2g 998 953 0.00      
10 B2g 828 790 0.00      
11 B2u 1493 1425 2.00      
12 B2u 1172 1119 10.71      
13 B2u 1029 982 34.71      
14 B3g 1599 1527 0.00      
15 B3g 1332 1272 0.00      
16 B3g 639 610 0.00      
17 B3u 930 888 0.95      
18 B3u 245 234 53.83      

Unscaled Zero Point Vibrational Energy (zpe) 11376.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 10862.7 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 B1B95/6-31G**
ABC
0.22987 0.21201 0.11029

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

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 1.191 0.659
N4 0.000 -1.191 0.659
N5 0.000 -1.191 -0.659
N6 0.000 1.191 -0.659
H7 0.000 0.000 2.342
H8 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51611.33381.33382.25682.25681.08433.6004
C22.51612.25682.25681.33381.33383.60041.0843
N31.33382.25682.38292.72271.31712.06273.2287
N41.33382.25682.38291.31712.72272.06273.2287
N52.25681.33382.72271.31712.38293.22872.0627
N62.25681.33381.31712.72272.38293.22872.0627
H71.08433.60042.06272.06273.22873.22874.6847
H83.60041.08433.22873.22872.06272.06274.6847

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 116.711 C1 N4 N5 116.711
C2 N5 N4 116.711 C2 N6 N3 116.711
N3 C1 N4 126.579 N3 C1 H7 116.711
N4 C1 H7 116.711 N5 C2 N6 126.579
N5 C2 H8 116.711 N6 C2 H8 116.711
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.235      
2 C 0.235      
3 N -0.205      
4 N -0.205      
5 N -0.205      
6 N -0.205      
7 H 0.175      
8 H 0.175      


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