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

using model chemistry: CCD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-225.514623
Energy at 298.15K-225.520632
HF Energy-224.769409
Nuclear repulsion energy166.512384
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/6-311G*
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 3255 3108 12.60      
2 A1 3100 2961 0.39      
3 A1 1747 1669 21.87      
4 A1 1466 1400 7.05      
5 A1 1423 1359 15.61      
6 A1 1277 1219 3.94      
7 A1 1052 1005 1.08      
8 A1 949 907 15.79      
9 A2 1173 1121 0.00      
10 A2 887 847 0.00      
11 A2 541 516 0.00      
12 B1 3150 3009 0.13      
13 B1 1037 990 22.89      
14 B1 824 787 9.94      
15 B1 353 337 35.52      
16 B2 3239 3094 5.81      
17 B2 1808 1727 0.00      
18 B2 1442 1377 35.34      
19 B2 1262 1205 3.16      
20 B2 1101 1051 33.49      
21 B2 950 908 63.67      

Unscaled Zero Point Vibrational Energy (zpe) 16016.9 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 15297.7 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 CCD/6-311G*
ABC
0.36107 0.30333 0.17026

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.206
N2 0.000 0.997 0.280
N3 0.000 -0.997 0.280
C4 0.000 0.730 -0.947
C5 0.000 -0.730 -0.947
H6 -0.898 0.000 1.831
H7 0.898 0.000 1.831
H8 0.000 1.480 -1.730
H9 0.000 -1.480 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36031.36032.27292.27291.09471.09473.28763.2876
N21.36031.99441.25592.11892.05092.05092.06753.1904
N31.36031.99442.11891.25592.05092.05093.19042.0675
C42.27291.25592.11891.46033.00953.00951.08442.3450
C52.27292.11891.25591.46033.00953.00952.34501.0844
H61.09472.05092.05093.00953.00951.79693.95963.9596
H71.09472.05092.05093.00953.00951.79693.95963.9596
H83.28762.06753.19041.08442.34503.95963.95962.9605
H93.28763.19042.06752.34501.08443.95963.95962.9605

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 120.580 C1 N3 C5 120.580
N2 C1 N3 94.288 N2 C1 H6 112.868
N2 C1 H7 112.868 N2 C4 C5 102.277
N2 C4 H8 123.954 N3 C1 H6 112.868
N3 C1 H7 112.868 N3 C5 C4 102.277
N3 C5 H9 123.954 C4 C5 H9 133.769
C5 C4 H8 133.769 H6 C1 H7 110.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability