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

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-225.540952
Energy at 298.15K-225.546870
HF Energy-224.811915
Nuclear repulsion energy162.926343
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 CCSD/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' 3687 3482 65.43      
2 A' 3313 3129 2.17      
3 A' 3288 3105 1.89      
4 A' 3284 3101 6.01      
5 A' 1611 1522 13.12      
6 A' 1559 1472 20.12      
7 A' 1494 1411 24.86      
8 A' 1410 1332 9.43      
9 A' 1313 1240 0.58      
10 A' 1185 1119 4.88      
11 A' 1179 1113 4.30      
12 A' 1130 1067 13.61      
13 A' 1104 1042 38.58      
14 A' 953 900 1.83      
15 A' 916 865 7.05      
16 A" 839 792 5.18      
17 A" 819 774 35.75      
18 A" 717 677 28.53      
19 A" 681 643 6.73      
20 A" 637 602 18.47      
21 A" 480 453 110.08      

Unscaled Zero Point Vibrational Energy (zpe) 15799.6 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 14919.6 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 CCSD/6-31G*
ABC
0.32462 0.31220 0.15914

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.109 0.000
C2 -1.089 0.281 0.000
C3 1.121 0.299 0.000
N4 -0.748 -0.987 0.000
C5 0.638 -0.985 0.000
H6 -0.011 2.120 0.000
H7 -2.105 0.663 0.000
H8 2.126 0.702 0.000
H9 1.201 -1.911 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36771.38332.22502.18891.01102.15142.16413.2500
C21.36772.21041.31322.14172.13111.08503.24203.1703
C31.38332.21042.26851.37172.14443.24651.08222.2114
N42.22501.31322.26851.38603.19262.13613.33292.1568
C52.18892.14171.37171.38603.17193.19992.24911.0837
H61.01102.13112.14443.19263.17192.55052.56414.2092
H72.15141.08503.24652.13613.19992.55054.23044.1896
H82.16413.24201.08223.33292.24912.56414.23042.7721
H93.25003.17032.21142.15681.08374.20924.18962.7721

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 112.166 N1 C2 H7 122.179
N1 C3 C5 105.222 N1 C3 H8 122.271
C2 N1 C3 106.927 C2 N1 H6 126.598
C2 N4 C5 104.991 C3 N1 H6 126.475
C3 C5 N4 110.694 C3 C5 H9 128.098
N4 C2 H7 125.655 N4 C5 H9 121.208
C5 C3 H8 132.507
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability