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

using model chemistry: CCD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-225.439559
Energy at 298.15K-225.445566
HF Energy-224.723777
Nuclear repulsion energy166.435979
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/6-31G*
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 3279 3104 10.71      
2 A1 3112 2945 0.28      
3 A1 1768 1674 22.42      
4 A1 1486 1406 5.64      
5 A1 1440 1363 12.03      
6 A1 1290 1221 3.61      
7 A1 1068 1011 1.11      
8 A1 960 909 14.23      
9 A2 1176 1113 0.00      
10 A2 883 835 0.00      
11 A2 542 513 0.00      
12 B1 3160 2991 0.26      
13 B1 1046 990 20.72      
14 B1 824 780 7.50      
15 B1 356 337 39.10      
16 B2 3265 3090 7.69      
17 B2 1830 1732 0.24      
18 B2 1454 1376 30.73      
19 B2 1277 1209 1.47      
20 B2 1109 1050 32.89      
21 B2 953 902 64.87      

Unscaled Zero Point Vibrational Energy (zpe) 16138.4 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 15275.0 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/6-31G*
ABC
0.36209 0.30228 0.17015

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.207
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.727 -0.948
C5 0.000 -0.727 -0.948
H6 -0.898 0.000 1.835
H7 0.898 0.000 1.835
H8 0.000 1.475 -1.734
H9 0.000 -1.475 -1.734

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36111.36112.27512.27511.09591.09593.29063.2906
N21.36111.99461.25882.11792.05352.05352.07113.1897
N31.36111.99462.11791.25882.05352.05353.18972.0711
C42.27511.25882.11791.45443.01423.01421.08482.3384
C52.27512.11791.25881.45443.01423.01422.33841.0848
H61.09592.05352.05353.01423.01421.79593.96543.9654
H71.09592.05352.05353.01423.01421.79593.96543.9654
H83.29062.07113.18971.08482.33843.96543.96542.9505
H93.29063.18972.07112.33841.08483.96543.96542.9505

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 120.495 C1 N3 C5 120.495
N2 C1 N3 94.231 N2 C1 H6 112.961
N2 C1 H7 112.961 N2 C4 C5 102.390
N2 C4 H8 124.014 N3 C1 H6 112.961
N3 C1 H7 112.961 N3 C5 C4 102.390
N3 C5 H9 124.014 C4 C5 H9 133.596
C5 C4 H8 133.596 H6 C1 H7 110.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability