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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: MP4=FULL/6-31G*

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=FULL/6-31G*
 hartrees
Energy at 0K-225.595739
Energy at 298.15K-225.601594
HF Energy-224.810422
Nuclear repulsion energy162.416204
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=FULL/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 A' 3649 3509        
2 A' 3293 3166        
3 A' 3266 3140        
4 A' 3263 3138        
5 A' 1565 1505        
6 A' 1523 1464        
7 A' 1469 1413        
8 A' 1381 1328        
9 A' 1290 1241        
10 A' 1171 1126        
11 A' 1164 1119        
12 A' 1115 1072        
13 A' 1090 1048        
14 A' 937 901        
15 A' 900 866        
16 A" 809 778        
17 A" 776 746        
18 A" 687 661        
19 A" 674 648        
20 A" 629 605        
21 A" 484 466        

Unscaled Zero Point Vibrational Energy (zpe) 15566.8 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 14969.0 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=FULL/6-31G*
ABC
0.32331 0.30954 0.15814

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.109 0.000
C2 -1.093 0.283 0.000
C3 1.124 0.304 0.000
N4 -0.747 -0.995 0.000
C5 0.639 -0.985 0.000
H6 -0.011 2.122 0.000
H7 -2.109 0.665 0.000
H8 2.126 0.713 0.000
H9 1.204 -1.911 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36991.38262.23242.18921.01322.15512.16293.2508
C21.36992.21691.32422.14652.13381.08523.24793.1764
C31.38262.21692.27691.37672.14333.25281.08292.2156
N42.23241.32422.27691.38553.20272.14733.34222.1549
C52.18922.14651.37671.38553.17423.20502.25731.0846
H61.01322.13382.14333.20273.17422.55462.55984.2117
H72.15511.08523.25282.14733.20502.55464.23554.1963
H82.16293.24791.08293.34222.25732.55984.23552.7809
H93.25083.17642.21562.15491.08464.21174.19632.7809

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 111.904 N1 C2 H7 122.336
N1 C3 C5 105.006 N1 C3 H8 122.165
C2 N1 C3 107.301 C2 N1 H6 126.470
C2 N4 C5 104.754 C3 N1 H6 126.229
C3 C5 N4 111.034 C3 C5 H9 127.970
N4 C2 H7 125.759 N4 C5 H9 120.995
C5 C3 H8 132.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability