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All results from a given calculation for C3H4N2 (4H-Imidazole)

using model chemistry: MP3=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-311G*
 hartrees
Energy at 0K-225.683790
Energy at 298.15K-225.689754
HF Energy-224.840906
Nuclear repulsion energy160.723636
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3267 3267 12.14      
2 A' 3242 3242 7.91      
3 A' 3097 3097 1.97      
4 A' 1717 1717 30.62      
5 A' 1635 1635 8.34      
6 A' 1461 1461 19.66      
7 A' 1355 1355 21.17      
8 A' 1346 1346 10.23      
9 A' 1302 1302 4.23      
10 A' 1064 1064 54.80      
11 A' 1033 1033 10.69      
12 A' 971 971 2.39      
13 A' 901 901 6.76      
14 A' 894 894 10.29      
15 A" 3141 3141 2.34      
16 A" 1194 1194 0.40      
17 A" 1023 1023 18.39      
18 A" 965 965 0.04      
19 A" 771 771 8.69      
20 A" 569 569 21.38      
21 A" 368 368 6.35      

Unscaled Zero Point Vibrational Energy (zpe) 15658.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15658.3 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/6-311G*
ABC
0.32152 0.29233 0.15762

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.202 0.350 0.000
C2 0.000 1.135 0.000
N3 1.114 0.510 0.000
C4 0.736 -0.899 0.000
C5 -0.765 -0.856 0.000
H6 -0.077 2.216 0.000
H7 1.147 -1.401 0.883
H8 1.147 -1.401 -0.883
H9 -1.434 -1.711 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.43512.32182.30621.28292.17813.06043.06042.0747
C21.43511.27782.16322.13251.08392.91992.91993.1867
N32.32181.27781.45872.32322.08122.10502.10503.3801
C42.30622.16321.45871.50213.21961.09561.09562.3169
C51.28292.13252.32321.50213.14772.17602.17601.0856
H62.17811.08392.08123.21963.14773.91923.91924.1547
H73.06042.91992.10501.09562.17603.91921.76622.7455
H83.06042.91992.10501.09562.17603.91921.76622.7455
H92.07473.18673.38012.31691.08564.15472.74552.7455

picture of 4H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N3 117.586 N1 C2 H6 119.037
N1 C5 C4 111.559 N1 C5 H9 122.093
C2 N1 C5 103.225 C2 N3 C4 104.267
N3 C2 H6 123.378 N3 C4 C5 103.364
N3 C4 H7 110.176 N3 C4 H8 110.176
C4 C5 H9 126.348 C5 C4 H7 112.847
C5 C4 H8 112.847 H7 C4 H8 107.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability