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

using model chemistry: MP2/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-295.568771
Energy at 298.15K-295.573950
Nuclear repulsion energy210.205768
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/aug-cc-pVDZ
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 3251 3118 0.00      
2 Ag 1416 1358 0.00      
3 Ag 998 957 0.00      
4 Ag 734 704 0.00      
5 Au 335 321 0.00      
6 B1u 3251 3117 2.96      
7 B1u 1203 1153 58.08      
8 B1u 1096 1051 0.01      
9 B2g 980 940 0.00      
10 B2g 801 768 0.00      
11 B2u 1452 1393 3.94      
12 B2u 1238 1187 1.77      
13 B2u 1070 1027 25.12      
14 B3g 1531 1468 0.00      
15 B3g 1310 1257 0.00      
16 B3g 627 602 0.00      
17 B3u 916 878 1.50      
18 B3u 259 248 53.08      

Unscaled Zero Point Vibrational Energy (zpe) 11233.6 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 10773.0 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/aug-cc-pVDZ
ABC
0.22353 0.20557 0.10709

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.273
C2 0.000 0.000 -1.273
N3 0.000 1.210 0.671
N4 0.000 -1.210 0.671
N5 0.000 -1.210 -0.671
N6 0.000 1.210 -0.671
H7 0.000 0.000 2.365
H8 0.000 0.000 -2.365

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.54611.35131.35132.29012.29011.09203.6381
C22.54612.29012.29011.35131.35133.63811.0920
N31.35132.29012.41992.76751.34282.08153.2686
N41.35132.29012.41991.34282.76752.08153.2686
N52.29011.35132.76751.34282.41993.26862.0815
N62.29011.35131.34282.76752.41993.26862.0815
H71.09203.63812.08152.08153.26863.26864.7301
H83.63811.09203.26863.26862.08152.08154.7301

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 116.439 C1 N4 N5 116.439
C2 N5 N4 116.439 C2 N6 N3 116.439
N3 C1 N4 127.123 N3 C1 H7 116.439
N4 C1 H7 116.439 N5 C2 N6 127.123
N5 C2 H8 116.439 N6 C2 H8 116.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability