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

using model chemistry: MP2=FULL/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=FULL/6-311G**
 hartrees
Energy at 0K-295.712572
Energy at 298.15K-295.717776
Nuclear repulsion energy211.753705
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/6-311G**
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 3256 3089 0.00      
2 Ag 1441 1367 0.00      
3 Ag 1016 964 0.00      
4 Ag 748 710 0.00      
5 Au 330 313 0.00      
6 B1u 3256 3089 4.30      
7 B1u 1223 1160 61.06      
8 B1u 1105 1049 0.09      
9 B2g 977 927 0.00      
10 B2g 801 760 0.00      
11 B2u 1466 1391 4.81      
12 B2u 1216 1154 0.13      
13 B2u 1084 1028 29.21      
14 B3g 1548 1469 0.00      
15 B3g 1326 1258 0.00      
16 B3g 635 602 0.00      
17 B3u 925 878 1.37      
18 B3u 271 257 55.78      

Unscaled Zero Point Vibrational Energy (zpe) 11313.2 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 10731.7 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/6-311G**
ABC
0.22693 0.20853 0.10867

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.263
C2 0.000 0.000 -1.263
N3 0.000 1.201 0.667
N4 0.000 -1.201 0.667
N5 0.000 -1.201 -0.667
N6 0.000 1.201 -0.667
H7 0.000 0.000 2.348
H8 0.000 0.000 -2.348

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52631.34141.34142.27312.27311.08443.6108
C22.52632.27312.27311.34141.34143.61081.0844
N31.34142.27312.40272.74771.33302.06623.2447
N41.34142.27312.40271.33302.74772.06623.2447
N52.27311.34142.74771.33302.40273.24472.0662
N62.27311.34141.33302.74772.40273.24472.0662
H71.08443.61082.06622.06623.24473.24474.6952
H83.61081.08443.24473.24472.06622.06624.6952

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 116.411 C1 N4 N5 116.411
C2 N5 N4 116.411 C2 N6 N3 116.411
N3 C1 N4 127.177 N3 C1 H7 116.411
N4 C1 H7 116.411 N5 C2 N6 127.177
N5 C2 H8 116.411 N6 C2 H8 116.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability