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

using model chemistry: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-225.666803
Energy at 298.15K-225.672667
HF Energy-224.844068
Nuclear repulsion energy159.527654
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 MP4/6-311G**
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' 3220 3122        
2 A' 3197 3100        
3 A' 3057 2965        
4 A' 1599 1550        
5 A' 1513 1467        
6 A' 1422 1379        
7 A' 1311 1272        
8 A' 1297 1258        
9 A' 1261 1223        
10 A' 1022 991        
11 A' 996 966        
12 A' 940 912        
13 A' 865 839        
14 A' 860 834        
15 A" 3104 3010        
16 A" 1155 1120        
17 A" 992 962        
18 A" 932 904        
19 A" 745 722        
20 A" 549 532        
21 A" 349 339        

Unscaled Zero Point Vibrational Energy (zpe) 15192.3 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 14731.9 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 MP4/6-311G**
ABC
0.31734 0.28762 0.15530

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.213 0.360 0.000
C2 0.000 1.140 0.000
N3 1.129 0.508 0.000
C4 0.739 -0.907 0.000
C5 -0.770 -0.861 0.000
H6 -0.076 2.225 0.000
H7 1.145 -1.410 0.888
H8 1.145 -1.410 -0.888
H9 -1.440 -1.719 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.44242.34732.32721.29902.18433.08023.08022.0916
C21.44241.29442.17632.14381.08732.93382.93383.2014
N32.34731.29441.46762.34072.09772.11412.11413.4000
C42.32722.17631.46761.50913.23591.09921.09922.3251
C51.29902.14382.34071.50913.16272.18142.18141.0891
H62.18431.08732.09773.23593.16273.93653.93654.1733
H73.08022.93382.11411.09922.18143.93651.77702.7509
H83.08022.93382.11411.09922.18143.93651.77702.7509
H92.09163.20143.40002.32511.08914.17332.75092.7509

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 118.018 N1 C2 H6 118.747
N1 C5 C4 111.725 N1 C5 H9 122.046
C2 N1 C5 102.764 C2 N3 C4 103.810
N3 C2 H6 123.235 N3 C4 C5 103.683
N3 C4 H7 110.072 N3 C4 H8 110.072
C4 C5 H9 126.229 C5 C4 H7 112.561
C5 C4 H8 112.561 H7 C4 H8 107.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability