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

using model chemistry: CCD/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-225.514856
Energy at 298.15K-225.520854
HF Energy-224.754321
Nuclear repulsion energy165.688118
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/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 A1 3270 3154 10.61      
2 A1 3102 2992 0.22      
3 A1 1731 1670 24.47      
4 A1 1443 1392 0.73      
5 A1 1409 1359 22.04      
6 A1 1272 1227 2.49      
7 A1 1045 1008 0.35      
8 A1 940 906 12.12      
9 A2 1159 1118 0.00      
10 A2 899 867 0.00      
11 A2 532 513 0.00      
12 B1 3155 3043 0.09      
13 B1 1019 983 23.81      
14 B1 823 794 5.94      
15 B1 343 330 34.00      
16 B2 3255 3139 3.07      
17 B2 1793 1729 0.01      
18 B2 1428 1377 37.02      
19 B2 1250 1206 3.66      
20 B2 1092 1053 31.13      
21 B2 938 905 55.51      

Unscaled Zero Point Vibrational Energy (zpe) 15948.3 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 15382.1 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/aug-cc-pVDZ
ABC
0.35938 0.29903 0.16860

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.214
N2 0.000 0.998 0.283
N3 0.000 -0.998 0.283
C4 0.000 0.733 -0.954
C5 0.000 -0.733 -0.954
H6 -0.904 0.000 1.842
H7 0.904 0.000 1.842
H8 0.000 1.490 -1.740
H9 0.000 -1.490 -1.740

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36501.36502.28922.28921.10081.10083.30863.3086
N21.36501.99531.26482.12762.06032.06032.08173.2059
N31.36501.99532.12761.26482.06032.06033.20592.0817
C42.28921.26482.12761.46693.02903.02901.09052.3579
C52.28922.12761.26481.46693.02903.02902.35791.0905
H61.10082.06032.06033.02903.02901.80853.98353.9835
H71.10082.06032.06033.02903.02901.80853.98353.9835
H83.30862.08173.20591.09052.35793.98353.98352.9791
H93.30863.20592.08172.35791.09053.98353.98352.9791

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 120.982 C1 N3 C5 120.982
N2 C1 N3 93.922 N2 C1 H6 112.906
N2 C1 H7 112.906 N2 C4 C5 102.057
N2 C4 H8 124.050 N3 C1 H6 112.906
N3 C1 H7 112.906 N3 C5 C4 102.057
N3 C5 H9 124.050 C4 C5 H9 133.893
C5 C4 H8 133.893 H6 C1 H7 110.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability