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

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-295.508174
Energy at 298.15K-295.513466
HF Energy-294.588398
Nuclear repulsion energy212.665864
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 MP3=FULL/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 3297 3094 0.00      
2 Ag 1547 1451 0.00      
3 Ag 1080 1014 0.00      
4 Ag 769 722 0.00      
5 Au 370 348 0.00      
6 B1u 3296 3093 4.62      
7 B1u 1277 1199 67.69      
8 B1u 1127 1058 2.13      
9 B2g 999 937 0.00      
10 B2g 816 765 0.00      
11 B2u 1530 1436 5.12      
12 B2u 1185 1112 11.09      
13 B2u 885 830 62.82      
14 B3g 1644 1543 0.00      
15 B3g 1365 1281 0.00      
16 B3g 659 618 0.00      
17 B3u 940 882 1.92      
18 B3u 320 301 54.54      

Unscaled Zero Point Vibrational Energy (zpe) 11553.7 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 10840.8 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 MP3=FULL/6-31G*
ABC
0.22809 0.21106 0.10962

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.264
C2 0.000 0.000 -1.264
N3 0.000 1.194 0.654
N4 0.000 -1.194 0.654
N5 0.000 -1.194 -0.654
N6 0.000 1.194 -0.654
H7 0.000 0.000 2.344
H8 0.000 0.000 -2.344

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52881.34131.34132.25932.25931.07953.6083
C22.52882.25932.25931.34131.34133.60831.0795
N31.34132.25932.38832.72261.30712.06963.2266
N41.34132.25932.38831.30712.72262.06963.2266
N52.25931.34132.72261.30712.38833.22662.0696
N62.25931.34131.30712.72262.38833.22662.0696
H71.07953.60832.06962.06963.22663.22664.6878
H83.60831.07953.22663.22662.06962.06964.6878

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 117.092 C1 N4 N5 117.092
C2 N5 N4 117.092 C2 N6 N3 117.092
N3 C1 N4 125.815 N3 C1 H7 117.092
N4 C1 H7 117.092 N5 C2 N6 125.815
N5 C2 H8 117.092 N6 C2 H8 117.092
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability