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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-225.573792
Energy at 298.15K-225.579751
HF Energy-224.836054
Nuclear repulsion energy160.162879
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 MP2/6-311G*
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 3241 3080 16.85      
2 A1 3100 2946 0.68      
3 A1 1505 1431 8.88      
4 A1 1432 1361 16.44      
5 A1 1352 1285 12.17      
6 A1 1012 962 0.94      
7 A1 997 947 1.66      
8 A1 842 801 5.50      
9 A2 1194 1135 0.00      
10 A2 947 900 0.00      
11 A2 569 541 0.00      
12 B1 3154 2997 0.89      
13 B1 1024 973 29.31      
14 B1 826 785 3.49      
15 B1 382 363 30.26      
16 B2 3228 3068 7.67      
17 B2 1602 1522 0.00      
18 B2 1298 1233 0.52      
19 B2 1278 1214 0.01      
20 B2 994 945 64.16      
21 B2 906 861 12.59      

Unscaled Zero Point Vibrational Energy (zpe) 15441.0 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 14673.6 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 MP2/6-311G*
ABC
0.32393 0.28694 0.15663

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.149
N2 0.000 1.091 0.286
N3 0.000 -1.091 0.286
C4 0.000 0.746 -0.916
C5 0.000 -0.746 -0.916
H6 -0.888 0.000 1.775
H7 0.888 0.000 1.775
H8 0.000 1.456 -1.726
H9 0.000 -1.456 -1.726

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.39121.39122.19622.19621.08661.08663.22303.2230
N21.39122.18201.25072.19572.04862.04862.04513.2458
N31.39122.18202.19571.25072.04862.04863.24582.0451
C42.19621.25072.19571.49262.93072.93071.07682.3463
C52.19622.19571.25071.49262.93072.93072.34631.0768
H61.08662.04862.04862.93072.93071.77673.89453.8945
H71.08662.04862.04862.93072.93071.77673.89453.8945
H83.22302.04513.24581.07682.34633.89453.89452.9116
H93.22303.24582.04512.34631.07683.89453.89452.9116

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 112.352 C1 N3 C5 112.352
N2 C1 N3 103.297 N2 C1 H6 110.936
N2 C1 H7 110.936 N2 C4 C5 106.000
N2 C4 H8 122.785 N3 C1 H6 110.936
N3 C1 H7 110.936 N3 C5 C4 106.000
N3 C5 H9 122.785 C4 C5 H9 131.215
C5 C4 H8 131.215 H6 C1 H7 109.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability