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

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-295.714145
Energy at 298.15K-295.719414
Nuclear repulsion energy212.557180
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=FULL/6-31G(2df,p)
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 3274 3078 0.00      
2 Ag 1456 1369 0.00      
3 Ag 1027 965 0.00      
4 Ag 751 706 0.00      
5 Au 362 340 0.00      
6 B1u 3274 3077 2.43      
7 B1u 1230 1156 65.78      
8 B1u 1109 1043 0.27      
9 B2g 1034 972 0.00      
10 B2g 844 794 0.00      
11 B2u 1472 1384 4.84      
12 B2u 1262 1186 0.79      
13 B2u 1098 1032 27.27      
14 B3g 1551 1458 0.00      
15 B3g 1338 1257 0.00      
16 B3g 639 600 0.00      
17 B3u 959 902 0.43      
18 B3u 269 253 52.37      

Unscaled Zero Point Vibrational Energy (zpe) 11474.2 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 10784.6 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 MP2=FULL/6-31G(2df,p)
ABC
0.22848 0.21030 0.10951

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

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 1.196 0.665
N4 0.000 -1.196 0.665
N5 0.000 -1.196 -0.665
N6 0.000 1.196 -0.665
H7 0.000 0.000 2.340
H8 0.000 0.000 -2.340

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51691.33561.33562.26472.26471.08163.5985
C22.51692.26472.26471.33561.33563.59851.0816
N31.33562.26472.39262.73691.32902.05873.2340
N41.33562.26472.39261.32902.73692.05873.2340
N52.26471.33562.73691.32902.39263.23402.0587
N62.26471.33561.32902.73692.39263.23402.0587
H71.08163.59852.05872.05873.23403.23404.6801
H83.59851.08163.23403.23402.05872.05874.6801

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 116.404 C1 N4 N5 116.404
C2 N5 N4 116.404 C2 N6 N3 116.404
N3 C1 N4 127.193 N3 C1 H7 116.404
N4 C1 H7 116.404 N5 C2 N6 127.193
N5 C2 H8 116.404 N6 C2 H8 116.404
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability