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

using model chemistry: MP2=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-295.870560
Energy at 298.15K-295.875841
Nuclear repulsion energy213.050113
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/cc-pVTZ
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 3264 3099 0.00      
2 Ag 1450 1377 0.00      
3 Ag 1028 976 0.00      
4 Ag 751 713 0.00      
5 Au 353 335 0.00      
6 B1u 3263 3098 3.12      
7 B1u 1235 1173 63.77      
8 B1u 1114 1057 0.08      
9 B2g 1032 980 0.00      
10 B2g 838 796 0.00      
11 B2u 1482 1407 3.98      
12 B2u 1249 1185 0.65      
13 B2u 1093 1037 28.08      
14 B3g 1562 1483 0.00      
15 B3g 1339 1271 0.00      
16 B3g 640 607 0.00      
17 B3u 966 917 1.16      
18 B3u 274 260 54.15      

Unscaled Zero Point Vibrational Energy (zpe) 11465.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10884.9 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/cc-pVTZ
ABC
0.22927 0.21146 0.11000

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

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 1.193 0.663
N4 0.000 -1.193 0.663
N5 0.000 -1.193 -0.663
N6 0.000 1.193 -0.663
H7 0.000 0.000 2.333
H8 0.000 0.000 -2.333

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51541.33321.33322.26072.26071.07553.5909
C22.51542.26072.26071.33321.33323.59091.0755
N31.33322.26072.38602.72931.32522.05283.2246
N41.33322.26072.38601.32522.72932.05283.2246
N52.26071.33322.72931.32522.38603.22462.0528
N62.26071.33321.32522.72932.38603.22462.0528
H71.07553.59092.05282.05283.22463.22464.6664
H83.59091.07553.22463.22462.05282.05284.6664

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 116.511 C1 N4 N5 116.511
C2 N5 N4 116.511 C2 N6 N3 116.511
N3 C1 N4 126.979 N3 C1 H7 116.511
N4 C1 H7 116.511 N5 C2 N6 126.979
N5 C2 H8 116.511 N6 C2 H8 116.511
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability