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

using model chemistry: MP2=FULL/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/cc-pVDZ
 hartrees
Energy at 0K-295.527104
Energy at 298.15K-295.532327
Nuclear repulsion energy210.815642
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-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 3265 3103 0.00      
2 Ag 1439 1367 0.00      
3 Ag 1016 966 0.00      
4 Ag 745 708 0.00      
5 Au 337 321 0.00      
6 B1u 3265 3103 5.28      
7 B1u 1222 1161 62.34      
8 B1u 1109 1054 0.56      
9 B2g 996 947 0.00      
10 B2g 816 776 0.00      
11 B2u 1464 1391 5.25      
12 B2u 1230 1169 0.38      
13 B2u 1083 1030 26.78      
14 B3g 1557 1480 0.00      
15 B3g 1319 1253 0.00      
16 B3g 633 602 0.00      
17 B3u 930 884 1.43      
18 B3u 275 261 51.96      

Unscaled Zero Point Vibrational Energy (zpe) 11350.7 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 10787.7 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/cc-pVDZ
ABC
0.22566 0.20607 0.10771

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.265
C2 0.000 0.000 -1.265
N3 0.000 1.208 0.669
N4 0.000 -1.208 0.669
N5 0.000 -1.208 -0.669
N6 0.000 1.208 -0.669
H7 0.000 0.000 2.358
H8 0.000 0.000 -2.358

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53051.34761.34762.28082.28081.09323.6237
C22.53052.28082.28081.34761.34763.62371.0932
N31.34762.28082.41702.76271.33812.07713.2598
N41.34762.28082.41701.33812.76272.07713.2598
N52.28081.34762.76271.33812.41703.25982.0771
N62.28081.34761.33812.76272.41703.25982.0771
H71.09323.62372.07712.07713.25983.25984.7169
H83.62371.09323.25983.25982.07712.07714.7169

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 116.258 C1 N4 N5 116.258
C2 N5 N4 116.258 C2 N6 N3 116.258
N3 C1 N4 127.484 N3 C1 H7 116.258
N4 C1 H7 116.258 N5 C2 N6 127.484
N5 C2 H8 116.258 N6 C2 H8 116.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability