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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-225.683579
Energy at 298.15K-225.689627
HF Energy-224.804258
Nuclear repulsion energy166.991185
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/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3269 3083 9.58      
2 A1 3108 2932 0.04      
3 A1 1742 1643 25.21      
4 A1 1457 1374 3.25      
5 A1 1423 1342 21.74      
6 A1 1269 1197 2.28      
7 A1 1052 992 0.70      
8 A1 951 897 11.95      
9 A2 1181 1114 0.00      
10 A2 930 877 0.00      
11 A2 547 516 0.00      
12 B1 3156 2976 0.38      
13 B1 1036 977 22.56      
14 B1 838 790 5.57      
15 B1 360 339 35.05      
16 B2 3255 3070 2.52      
17 B2 1807 1704 0.00      
18 B2 1437 1356 34.74      
19 B2 1276 1203 3.01      
20 B2 1102 1039 36.77      
21 B2 949 895 55.69      

Unscaled Zero Point Vibrational Energy (zpe) 16072.8 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 15158.2 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 CCD/6-311+G(3df,2p)
ABC
0.36258 0.30547 0.17122

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.202
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.727 -0.943
C5 0.000 -0.727 -0.943
H6 -0.894 0.000 1.825
H7 0.894 0.000 1.825
H8 0.000 1.469 -1.726
H9 0.000 -1.469 -1.726

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35851.35852.26472.26471.08991.08993.27603.2760
N21.35851.99401.25142.11342.04552.04552.06023.1786
N31.35851.99402.11341.25142.04552.04553.17862.0602
C42.26471.25142.11341.45452.99852.99851.07892.3319
C52.26472.11341.25141.45452.99852.99852.33191.0789
H61.08992.04552.04552.99852.99851.78793.94603.9460
H71.08992.04552.04552.99852.99851.78793.94603.9460
H83.27602.06023.17861.07892.33193.94603.94602.9382
H93.27603.17862.06022.33191.07893.94603.94602.9382

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.336 C1 N3 C5 120.336
N2 C1 N3 94.429 N2 C1 H6 112.864
N2 C1 H7 112.864 N2 C4 C5 102.450
N2 C4 H8 124.108 N3 C1 H6 112.864
N3 C1 H7 112.864 N3 C5 C4 102.450
N3 C5 H9 124.108 C4 C5 H9 133.442
C5 C4 H8 133.442 H6 C1 H7 110.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability