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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-225.074644
Energy at 298.15K-225.080624
HF Energy-224.598049
Nuclear repulsion energy164.347594
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 MP2/6-31G
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 3297 3155 8.74      
2 A1 3121 2986 1.05      
3 A1 1637 1567 29.05      
4 A1 1504 1439 14.65      
5 A1 1377 1318 1.03      
6 A1 1257 1203 7.20      
7 A1 1041 996 7.60      
8 A1 938 898 7.85      
9 A2 1163 1113 0.00      
10 A2 798 763 0.00      
11 A2 547 523 0.00      
12 B1 3177 3039 0.04      
13 B1 1066 1020 17.06      
14 B1 789 755 16.03      
15 B1 370 354 49.82      
16 B2 3281 3139 6.24      
17 B2 1683 1610 0.63      
18 B2 1367 1308 9.64      
19 B2 1278 1223 4.22      
20 B2 1080 1033 34.82      
21 B2 965 923 71.67      

Unscaled Zero Point Vibrational Energy (zpe) 15867.7 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 15182.2 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 MP2/6-31G
ABC
0.35761 0.29112 0.16562

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.233
N2 0.000 0.999 0.287
N3 0.000 -0.999 0.287
C4 0.000 0.739 -0.970
C5 0.000 -0.739 -0.970
H6 -0.899 0.000 1.858
H7 0.899 0.000 1.858
H8 0.000 1.491 -1.748
H9 0.000 -1.491 -1.748

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37561.37562.32422.32421.09491.09493.33403.3340
N21.37561.99711.28402.14472.06712.06712.09453.2162
N31.37561.99712.14471.28402.06712.06713.21622.0945
C42.32421.28402.14471.47773.05843.05841.08252.3621
C52.32422.14471.28401.47773.05843.05842.36211.0825
H61.09492.06712.06713.05843.05841.79844.00494.0049
H71.09492.06712.06713.05843.05841.79844.00494.0049
H83.33402.09453.21621.08252.36214.00494.00492.9828
H93.33403.21622.09452.36211.08254.00494.00492.9828

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 121.786 C1 N3 C5 121.786
N2 C1 N3 93.090 N2 C1 H6 113.105
N2 C1 H7 113.105 N2 C4 C5 101.669
N2 C4 H8 124.291 N3 C1 H6 113.105
N3 C1 H7 113.105 N3 C5 C4 101.669
N3 C5 H9 124.291 C4 C5 H9 134.041
C5 C4 H8 134.041 H6 C1 H7 110.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability