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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-295.585558
Energy at 298.15K-295.590741
HF Energy-294.645292
Nuclear repulsion energy211.526954
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 MP2/6-311G*
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 3254 3092 0.00      
2 Ag 1436 1365 0.00      
3 Ag 1013 962 0.00      
4 Ag 748 711 0.00      
5 Au 330 313 0.00      
6 B1u 3253 3092 4.85      
7 B1u 1220 1160 60.80      
8 B1u 1106 1051 0.02      
9 B2g 968 920 0.00      
10 B2g 801 761 0.00      
11 B2u 1469 1396 5.98      
12 B2u 1209 1149 0.07      
13 B2u 1080 1026 31.18      
14 B3g 1549 1472 0.00      
15 B3g 1325 1259 0.00      
16 B3g 635 603 0.00      
17 B3u 916 870 2.42      
18 B3u 272 258 57.57      

Unscaled Zero Point Vibrational Energy (zpe) 11291.0 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 10729.8 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 MP2/6-311G*
ABC
0.22641 0.20811 0.10844

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.268
C2 0.000 0.000 -1.268
N3 0.000 1.203 0.656
N4 0.000 -1.203 0.656
N5 0.000 -1.203 -0.656
N6 0.000 1.203 -0.656
H7 0.000 0.000 2.349
H8 0.000 0.000 -2.349

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53551.35001.35002.26902.26901.08163.6171
C22.53552.26902.26901.35001.35003.61711.0816
N31.35002.26902.40672.74101.31182.07743.2372
N41.35002.26902.40671.31182.74102.07743.2372
N52.26901.35002.74101.31182.40673.23722.0774
N62.26901.35001.31182.74102.40673.23722.0774
H71.08163.61712.07742.07743.23723.23724.6986
H83.61711.08163.23723.23722.07742.07744.6986

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 116.951 C1 N4 N5 116.951
C2 N5 N4 116.951 C2 N6 N3 116.951
N3 C1 N4 126.099 N3 C1 H7 116.951
N4 C1 H7 116.951 N5 C2 N6 126.099
N5 C2 H8 116.951 N6 C2 H8 116.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability