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

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-225.568782
Energy at 298.15K-225.574760
HF Energy-224.822514
Nuclear repulsion energy163.267501
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 CCD/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' 3781 3545 72.87      
2 A' 3366 3156 2.32      
3 A' 3337 3129 0.34      
4 A' 3335 3127 8.02      
5 A' 1627 1525 11.76      
6 A' 1576 1477 25.23      
7 A' 1520 1425 24.13      
8 A' 1426 1337 9.26      
9 A' 1327 1244 0.71      
10 A' 1193 1118 8.78      
11 A' 1189 1115 0.68      
12 A' 1139 1068 13.45      
13 A' 1113 1043 34.27      
14 A' 957 897 1.69      
15 A' 920 862 6.56      
16 A" 857 803 4.78      
17 A" 828 777 31.46      
18 A" 733 687 27.74      
19 A" 686 643 2.45      
20 A" 642 602 21.44      
21 A" 503 472 102.05      

Unscaled Zero Point Vibrational Energy (zpe) 16025.7 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 15025.7 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 CCD/6-31G**
ABC
0.32610 0.31316 0.15975

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.107 0.000
C2 -1.087 0.280 0.000
C3 1.119 0.300 0.000
N4 -0.746 -0.986 0.000
C5 0.637 -0.983 0.000
H6 -0.012 2.111 0.000
H7 -2.096 0.661 0.000
H8 2.117 0.701 0.000
H9 1.199 -1.902 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36601.38012.22272.18571.00402.14312.15583.2394
C21.36602.20661.31192.13802.12311.07843.23193.1608
C31.38012.20662.26591.37082.13583.23561.07552.2032
N42.22271.31192.26591.38353.18342.13003.32352.1501
C52.18572.13801.37081.38353.16213.19002.24211.0768
H61.00402.12312.13583.18343.16212.53872.55424.1921
H72.14311.07843.23562.13003.19002.53874.21344.1748
H82.15583.23191.07553.32352.24212.55424.21342.7599
H93.23943.16082.20322.15011.07684.19214.17482.7599

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 112.191 N1 C2 H7 122.061
N1 C3 C5 105.222 N1 C3 H8 122.298
C2 N1 C3 106.934 C2 N1 H6 126.554
C2 N4 C5 104.943 C3 N1 H6 126.512
C3 C5 N4 110.710 C3 C5 H9 127.951
N4 C2 H7 125.749 N4 C5 H9 121.339
C5 C3 H8 132.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability