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

using model chemistry: CCD/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 CCD/6-311G*
 hartrees
Energy at 0K-295.582184
Energy at 298.15K-295.587468
Nuclear repulsion energy212.838320
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 CCD/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 3246 3101 0.00      
2 Ag 1535 1466 0.00      
3 Ag 1068 1020 0.00      
4 Ag 764 730 0.00      
5 Au 361 345 0.00      
6 B1u 3245 3100 6.15      
7 B1u 1260 1203 62.14      
8 B1u 1125 1075 1.80      
9 B2g 978 934 0.00      
10 B2g 813 777 0.00      
11 B2u 1508 1440 4.02      
12 B2u 1170 1117 13.24      
13 B2u 883 843 57.47      
14 B3g 1625 1552 0.00      
15 B3g 1341 1281 0.00      
16 B3g 652 623 0.00      
17 B3u 926 885 2.92      
18 B3u 323 309 53.56      

Unscaled Zero Point Vibrational Energy (zpe) 11411.2 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 10898.9 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 CCD/6-311G*
ABC
0.22899 0.21093 0.10979

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.261
C2 0.000 0.000 -1.261
N3 0.000 1.195 0.659
N4 0.000 -1.195 0.659
N5 0.000 -1.195 -0.659
N6 0.000 1.195 -0.659
H7 0.000 0.000 2.346
H8 0.000 0.000 -2.346

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52201.33741.33742.26162.26161.08543.6074
C22.52202.26162.26161.33741.33743.60741.0854
N31.33742.26162.38902.72891.31892.06713.2345
N41.33742.26162.38901.31892.72892.06713.2345
N52.26161.33742.72891.31892.38903.23452.0671
N62.26161.33741.31892.72892.38903.23452.0671
H71.08543.60742.06712.06713.23453.23454.6929
H83.60741.08543.23453.23452.06712.06714.6929

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 116.730 C1 N4 N5 116.730
C2 N5 N4 116.730 C2 N6 N3 116.730
N3 C1 N4 126.541 N3 C1 H7 116.730
N4 C1 H7 116.730 N5 C2 N6 126.541
N5 C2 H8 116.730 N6 C2 H8 116.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability