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

using model chemistry: MP2=FULL/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=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-295.585175
Energy at 298.15K-295.590357
Nuclear repulsion energy210.391891
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/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 3257 3156 0.00      
2 Ag 1419 1376 0.00      
3 Ag 1000 970 0.00      
4 Ag 735 712 0.00      
5 Au 336 325 0.00      
6 B1u 3256 3156 2.89      
7 B1u 1205 1168 58.11      
8 B1u 1097 1063 0.00      
9 B2g 980 949 0.00      
10 B2g 802 777 0.00      
11 B2u 1454 1409 3.94      
12 B2u 1242 1204 1.68      
13 B2u 1072 1039 25.12      
14 B3g 1535 1488 0.00      
15 B3g 1313 1272 0.00      
16 B3g 627 608 0.00      
17 B3u 915 887 1.46      
18 B3u 259 251 53.13      

Unscaled Zero Point Vibrational Energy (zpe) 11251.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 10905.2 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/aug-cc-pVDZ
ABC
0.22390 0.20596 0.10728

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.272
C2 0.000 0.000 -1.272
N3 0.000 1.209 0.671
N4 0.000 -1.209 0.671
N5 0.000 -1.209 -0.671
N6 0.000 1.209 -0.671
H7 0.000 0.000 2.363
H8 0.000 0.000 -2.363

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.54391.35011.35012.28822.28821.09113.6350
C22.54392.28822.28821.35011.35013.63501.0911
N31.35012.28822.41772.76501.34162.07963.2658
N41.35012.28822.41771.34162.76502.07963.2658
N52.28821.35012.76501.34162.41773.26582.0796
N62.28821.35011.34162.76502.41773.26582.0796
H71.09113.63502.07962.07963.26583.26584.7261
H83.63501.09113.26583.26582.07962.07964.7261

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 116.441 C1 N4 N5 116.441
C2 N5 N4 116.441 C2 N6 N3 116.441
N3 C1 N4 127.119 N3 C1 H7 116.441
N4 C1 H7 116.441 N5 C2 N6 127.119
N5 C2 H8 116.441 N6 C2 H8 116.441
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability