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

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-295.541512
Energy at 298.15K-295.546778
HF Energy-294.599390
Nuclear repulsion energy212.675895
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 MP3=FULL/6-31+G**
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 3337 3108 0.00      
2 Ag 1545 1439 0.00      
3 Ag 1077 1004 0.00      
4 Ag 767 715 0.00      
5 Au 352 328 0.00      
6 B1u 3336 3108 2.80      
7 B1u 1272 1185 61.84      
8 B1u 1125 1048 0.66      
9 B2g 989 921 0.00      
10 B2g 779 726 0.00      
11 B2u 1531 1427 2.75      
12 B2u 1185 1104 8.23      
13 B2u 888 827 68.19      
14 B3g 1641 1528 0.00      
15 B3g 1368 1275 0.00      
16 B3g 658 613 0.00      
17 B3u 939 875 2.05      
18 B3u 312 291 54.45      

Unscaled Zero Point Vibrational Energy (zpe) 11549.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 10759.5 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 MP3=FULL/6-31+G**
ABC
0.22820 0.21089 0.10960

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

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 1.195 0.653
N4 0.000 -1.195 0.653
N5 0.000 -1.195 -0.653
N6 0.000 1.195 -0.653
H7 0.000 0.000 2.338
H8 0.000 0.000 -2.338

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53021.34231.34232.26002.26001.07293.6031
C22.53022.26002.26001.34231.34233.60311.0729
N31.34232.26002.38962.72341.30662.06543.2210
N41.34232.26002.38961.30662.72342.06543.2210
N52.26001.34232.72341.30662.38963.22102.0654
N62.26001.34231.30662.72342.38963.22102.0654
H71.07293.60312.06542.06543.22103.22104.6760
H83.60311.07293.22103.22102.06542.06544.6760

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 117.115 C1 N4 N5 117.115
C2 N5 N4 117.115 C2 N6 N3 117.115
N3 C1 N4 125.770 N3 C1 H7 117.115
N4 C1 H7 117.115 N5 C2 N6 125.770
N5 C2 H8 117.115 N6 C2 H8 117.115
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability