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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-224.905071
Energy at 298.15K-224.911295
HF Energy-224.905071
Nuclear repulsion energy165.348331
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3914 3547 93.66      
2 A' 3430 3109 2.40      
3 A' 3401 3082 3.71      
4 A' 3394 3076 5.28      
5 A' 1722 1561 22.78      
6 A' 1646 1492 23.10      
7 A' 1569 1422 22.79      
8 A' 1484 1345 9.17      
9 A' 1405 1274 0.80      
10 A' 1245 1129 5.62      
11 A' 1219 1104 4.30      
12 A' 1175 1065 13.04      
13 A' 1145 1038 57.04      
14 A' 1020 924 1.54      
15 A' 982 890 7.32      
16 A" 1010 915 0.00      
17 A" 980 888 20.70      
18 A" 842 763 59.19      
19 A" 731 662 12.74      
20 A" 692 627 4.45      
21 A" 542 491 114.26      

Unscaled Zero Point Vibrational Energy (zpe) 16772.2 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 15202.4 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 HF/Def2TZVPP
ABC
0.33201 0.32357 0.16387

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.737 -0.959 0.000
H2 -0.012 2.073 0.000
C3 1.106 0.286 0.000
H4 2.097 0.676 0.000
C5 0.627 -0.970 0.000
H6 1.179 -1.883 0.000
H7 -2.072 0.658 0.000
C8 -1.073 0.282 0.000
N9 0.000 1.086 0.000

Atom - Atom Distances (Å)
  N1 H2 C3 H4 C5 H6 H7 C8 N9
N13.11792.22363.27121.36412.12722.09681.28632.1742
H23.11792.10872.52973.11024.13202.49912.08150.9871
C32.22362.10871.06481.34392.16983.19932.17871.3655
H43.27122.52971.06482.20662.71844.16833.19372.1364
C51.36413.11021.34392.20661.06673.15212.11192.1503
H62.12724.13202.16982.71841.06674.12623.12443.1951
H72.09682.49913.19934.16833.15214.12621.06712.1155
C81.28632.08152.17873.19372.11193.12441.06711.3406
N92.17420.98711.36552.13642.15033.19512.11551.3406

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 69.905 N1 C2 H7 42.061
N1 C3 C5 35.102 N1 C3 H8 33.958
C2 N1 C3 42.524 C2 N1 H6 102.306
C2 N4 C5 81.786 C3 N1 H6 59.782
C3 C5 N4 20.887 C3 C5 H9 37.823
N4 C2 H7 111.966 N4 C5 H9 58.710
C5 C3 H8 69.060
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.429      
2 H 0.194      
3 C -0.022      
4 H 0.115      
5 C -0.013      
6 H 0.091      
7 H 0.101      
8 C 0.240      
9 N -0.278      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.077 3.660 0.000 3.815
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.587 -3.519 0.000
y -3.519 -25.775 0.000
z 0.000 0.000 -32.179
Traceless
 xyz
x 2.390 -3.519 0.000
y -3.519 3.608 0.000
z 0.000 0.000 -5.998
Polar
3z2-r2-11.996
x2-y2-0.812
xy-3.519
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.333 -0.064 0.000
y -0.064 7.215 0.000
z 0.000 0.000 4.303


<r2> (average value of r2) Å2
<r2> 78.431
(<r2>)1/2 8.856