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

using model chemistry: MP3=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/3-21G*
 hartrees
Energy at 0K-224.044059
Energy at 298.15K-224.050102
HF Energy-223.545410
Nuclear repulsion energy160.946619
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/3-21G*
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' 3650 3650 69.66      
2 A' 3325 3325 1.62      
3 A' 3302 3302 2.25      
4 A' 3299 3299 1.77      
5 A' 1556 1556 21.35      
6 A' 1491 1491 6.53      
7 A' 1434 1434 19.60      
8 A' 1346 1346 9.41      
9 A' 1289 1289 6.60      
10 A' 1176 1176 1.02      
11 A' 1103 1103 4.78      
12 A' 1090 1090 39.49      
13 A' 1049 1049 11.28      
14 A' 972 972 2.06      
15 A' 929 929 9.39      
16 A" 868 868 1.54      
17 A" 841 841 29.07      
18 A" 754 754 37.31      
19 A" 683 683 6.26      
20 A" 657 657 45.06      
21 A" 623 623 132.03      

Unscaled Zero Point Vibrational Energy (zpe) 15718.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15718.8 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/3-21G*
ABC
0.31403 0.30645 0.15510

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.121 0.000
C2 -1.112 0.288 0.000
C3 1.134 0.298 0.000
N4 -0.758 -0.996 0.000
C5 0.658 -0.995 0.000
H6 -0.002 2.130 0.000
H7 -2.122 0.665 0.000
H8 2.136 0.695 0.000
H9 1.217 -1.915 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.38911.40052.24822.21531.00932.17032.17773.2705
C21.38912.24591.33222.18622.15011.07763.27323.2064
C31.40052.24592.29221.37792.15523.27621.07762.2148
N42.24821.33222.29221.41603.21582.14893.35152.1788
C52.21532.18621.37791.41603.19363.23752.24471.0769
H61.00932.15012.15523.21583.19362.57672.57494.2246
H72.17031.07763.27622.14893.23752.57674.25774.2196
H82.17773.27321.07763.35152.24472.57494.25772.7666
H93.27053.20642.21482.17881.07694.22464.21962.7666

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 111.395 N1 C2 H7 122.747
N1 C3 C5 105.747 N1 C3 H8 122.462
C2 N1 C3 107.243 C2 N1 H6 126.679
C2 N4 C5 105.367 C3 N1 H6 126.078
C3 C5 N4 110.248 C3 C5 H9 128.494
N4 C2 H7 125.858 N4 C5 H9 121.258
C5 C3 H8 131.791
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability