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

using model chemistry: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-295.038284
Energy at 298.15K-295.043427
Nuclear repulsion energy207.850669
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 CCD/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 3262 3130 0.00      
2 Ag 1380 1325 0.00      
3 Ag 982 942 0.00      
4 Ag 745 715 0.00      
5 Au 367 352 0.00      
6 B1u 3260 3128 2.77      
7 B1u 1201 1152 59.47      
8 B1u 1078 1035 5.13      
9 B2g 962 923 0.00      
10 B2g 780 748 0.00      
11 B2u 1457 1398 18.32      
12 B2u 1087 1043 2.41      
13 B2u 688 660 40.02      
14 B3g 1512 1450 0.00      
15 B3g 1320 1267 0.00      
16 B3g 650 624 0.00      
17 B3u 915 878 2.79      
18 B3u 323 310 65.27      

Unscaled Zero Point Vibrational Energy (zpe) 10984.4 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 10539.6 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 CCD/6-31G
ABC
0.21592 0.20318 0.10468

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.300
C2 0.000 0.000 -1.300
N3 0.000 1.217 0.682
N4 0.000 -1.217 0.682
N5 0.000 -1.217 -0.682
N6 0.000 1.217 -0.682
H7 0.000 0.000 2.385
H8 0.000 0.000 -2.385

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.60071.36531.36532.32582.32581.08513.6858
C22.60072.32582.32581.36531.36533.68581.0851
N31.36532.32582.43412.78991.36322.09393.2998
N41.36532.32582.43411.36322.78992.09393.2998
N52.32581.36532.78991.36322.43413.29982.0939
N62.32581.36531.36322.78992.43413.29982.0939
H71.08513.68582.09392.09393.29983.29984.7710
H83.68581.08513.29983.29982.09392.09394.7710

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 116.948 C1 N4 N5 116.948
C2 N5 N4 116.948 C2 N6 N3 116.948
N3 C1 N4 126.104 N3 C1 H7 116.948
N4 C1 H7 116.948 N5 C2 N6 126.104
N5 C2 H8 116.948 N6 C2 H8 116.948
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability