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

using model chemistry: MP3=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-225.638769
Energy at 298.15K-225.644853
HF Energy-224.748943
Nuclear repulsion energy167.276453
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/6-31G(2df,p)
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 3323 3323 7.50      
2 A1 3156 3156 0.00      
3 A1 1769 1769 22.25      
4 A1 1462 1462 4.17      
5 A1 1431 1431 15.72      
6 A1 1282 1282 3.25      
7 A1 1066 1066 1.13      
8 A1 964 964 13.99      
9 A2 1201 1201 0.00      
10 A2 957 957 0.00      
11 A2 563 563 0.00      
12 B1 3206 3206 0.22      
13 B1 1045 1045 20.13      
14 B1 854 854 3.34      
15 B1 370 370 36.15      
16 B2 3306 3306 4.10      
17 B2 1835 1835 0.41      
18 B2 1441 1441 29.53      
19 B2 1279 1279 1.66      
20 B2 1110 1110 30.04      
21 B2 958 958 68.25      

Unscaled Zero Point Vibrational Energy (zpe) 16288.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16288.9 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/6-31G(2df,p)
ABC
0.36331 0.30689 0.17180

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.199
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.726 -0.940
C5 0.000 -0.726 -0.940
H6 -0.892 0.000 1.822
H7 0.892 0.000 1.822
H8 0.000 1.463 -1.725
H9 0.000 -1.463 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35641.35642.25882.25881.08821.08823.26963.2696
N21.35641.99361.24882.11062.04222.04222.05753.1730
N31.35641.99362.11061.24882.04222.04223.17302.0575
C42.25881.24882.11061.45222.99222.99221.07682.3259
C52.25882.11061.24881.45222.99222.99222.32591.0768
H61.08822.04222.04222.99222.99221.78393.93953.9395
H71.08822.04222.04222.99222.99221.78393.93953.9395
H83.26962.05753.17301.07682.32593.93953.93952.9268
H93.26963.17302.05752.32591.07683.93953.93952.9268

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 120.183 C1 N3 C5 120.183
N2 C1 N3 94.595 N2 C1 H6 112.862
N2 C1 H7 112.862 N2 C4 C5 102.519
N2 C4 H8 124.270 N3 C1 H6 112.862
N3 C1 H7 112.862 N3 C5 C4 102.519
N3 C5 H9 124.270 C4 C5 H9 133.211
C5 C4 H8 133.211 H6 C1 H7 110.100
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability