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

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-296.356478
Energy at 298.15K-296.361571
HF Energy-296.356478
Nuclear repulsion energy212.376458
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 TPSSh/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 3201 3089 0.00      
2 Ag 1460 1409 0.00      
3 Ag 1040 1004 0.00      
4 Ag 745 719 0.00      
5 Au 323 312 0.00      
6 B1u 3199 3087 12.54      
7 B1u 1219 1177 60.06      
8 B1u 1090 1052 2.46      
9 B2g 1006 971 0.00      
10 B2g 830 801 0.00      
11 B2u 1474 1422 2.59      
12 B2u 1151 1111 7.29      
13 B2u 987 953 32.16      
14 B3g 1553 1499 0.00      
15 B3g 1325 1279 0.00      
16 B3g 634 612 0.00      
17 B3u 930 897 0.59      
18 B3u 208 200 50.26      

Unscaled Zero Point Vibrational Energy (zpe) 11187.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10795.8 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 TPSSh/6-31G(2df,p)
ABC
0.22809 0.20994 0.10932

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.265
C2 0.000 0.000 -1.265
N3 0.000 1.199 0.653
N4 0.000 -1.199 0.653
N5 0.000 -1.199 -0.653
N6 0.000 1.199 -0.653
H7 0.000 0.000 2.347
H8 0.000 0.000 -2.347

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53071.34611.34612.26212.26211.08153.6122
C22.53072.26212.26211.34611.34613.61221.0815
N31.34612.26212.39762.73021.30602.07513.2305
N41.34612.26212.39761.30602.73022.07513.2305
N52.26211.34612.73021.30602.39763.23052.0751
N62.26211.34611.30602.73022.39763.23052.0751
H71.08153.61222.07512.07513.23053.23054.6936
H83.61221.08153.23053.23052.07512.07514.6936

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 117.058 C1 N4 N5 117.058
C2 N5 N4 117.058 C2 N6 N3 117.058
N3 C1 N4 125.885 N3 C1 H7 117.058
N4 C1 H7 117.058 N5 C2 N6 125.885
N5 C2 H8 117.058 N6 C2 H8 117.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability