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

using model chemistry: MP4/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-225.660007
Energy at 298.15K-225.665889
HF Energy-224.842974
Nuclear repulsion energy161.263103
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 MP4/6-31G*
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' 3648 3564        
2 A' 3291 3215        
3 A' 3265 3189        
4 A' 3263 3187        
5 A' 1562 1526        
6 A' 1520 1485        
7 A' 1467 1433        
8 A' 1378 1346        
9 A' 1288 1259        
10 A' 1169 1142        
11 A' 1162 1135        
12 A' 1113 1087        
13 A' 1088 1063        
14 A' 935 914        
15 A' 898 878        
16 A" 803 784        
17 A" 770 752        
18 A" 682 667        
19 A" 670 655        
20 A" 625 610        
21 A" 474 463        

Unscaled Zero Point Vibrational Energy (zpe) 15536.0 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 15177.1 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/aug-cc-pVDZ
ABC
0.31842 0.30525 0.15585

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.116 0.000
C2 -1.102 0.287 0.000
C3 1.132 0.307 0.000
N4 -0.752 -1.001 0.000
C5 0.643 -0.995 0.000
H6 -0.013 2.130 0.000
H7 -2.122 0.672 0.000
H8 2.141 0.719 0.000
H9 1.214 -1.924 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37881.39122.24682.20711.01382.16782.17763.2738
C21.37882.23381.33492.16522.14051.09063.27123.2021
C31.39122.23382.29361.39132.15223.27431.08952.2330
N42.24681.33492.29361.39483.21702.16293.36532.1719
C52.20712.16521.39131.39483.19313.22892.27611.0906
H61.01382.14052.15223.21703.19312.56382.57494.2356
H72.16781.09063.27432.16293.22892.56384.26314.2276
H82.17763.27121.08953.36532.27612.57494.26312.8003
H93.27383.20212.23302.17191.09064.23564.22762.8003

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 111.766 N1 C2 H7 122.346
N1 C3 C5 104.966 N1 C3 H8 122.286
C2 N1 C3 107.492 C2 N1 H6 126.244
C2 N4 C5 104.952 C3 N1 H6 126.263
C3 C5 N4 110.824 C3 C5 H9 127.828
N4 C2 H7 125.888 N4 C5 H9 121.348
C5 C3 H8 132.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability