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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-224.771694
Energy at 298.15K-224.777925
HF Energy-224.771694
Nuclear repulsion energy168.100050
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3401 3076 22.93      
2 A1 3243 2933 7.32      
3 A1 1892 1711 33.86      
4 A1 1577 1426 1.94      
5 A1 1523 1377 18.52      
6 A1 1327 1200 1.87      
7 A1 1108 1002 2.56      
8 A1 1021 923 16.13      
9 A2 1275 1153 0.00      
10 A2 1035 936 0.00      
11 A2 591 535 0.00      
12 B1 3284 2970 5.03      
13 B1 1137 1029 27.93      
14 B1 919 831 5.59      
15 B1 399 361 39.20      
16 B2 3384 3061 11.78      
17 B2 1959 1772 0.10      
18 B2 1550 1402 49.95      
19 B2 1369 1238 2.56      
20 B2 1167 1055 47.97      
21 B2 1004 908 68.64      

Unscaled Zero Point Vibrational Energy (zpe) 17081.8 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 15448.8 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 HF/6-311G*
ABC
0.36355 0.31197 0.17337

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.192
N2 0.000 0.997 0.273
N3 0.000 -0.997 0.273
C4 0.000 0.727 -0.930
C5 0.000 -0.727 -0.930
H6 -0.887 0.000 1.812
H7 0.887 0.000 1.812
H8 0.000 1.457 -1.716
H9 0.000 -1.457 -1.716

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35561.35562.24302.24301.08261.08263.25243.2524
N21.35561.99341.23302.10192.03722.03722.04143.1588
N31.35561.99342.10191.23302.03722.03723.15882.0414
C42.24301.23302.10191.45382.97272.97271.07282.3212
C52.24302.10191.23301.45382.97272.97272.32121.0728
H61.08262.03722.03722.97272.97271.77433.91913.9191
H71.08262.03722.03722.97272.97271.77433.91913.9191
H83.25242.04143.15881.07282.32123.91913.91912.9147
H93.25243.15882.04142.32121.07283.91913.91912.9147

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.032 C1 N3 C5 120.032
N2 C1 N3 94.654 N2 C1 H6 112.862
N2 C1 H7 112.862 N2 C4 C5 102.641
N2 C4 H8 124.445 N3 C1 H6 112.862
N3 C1 H7 112.862 N3 C5 C4 102.641
N3 C5 H9 124.445 C4 C5 H9 132.914
C5 C4 H8 132.914 H6 C1 H7 110.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.139      
2 N -0.341      
3 N -0.341      
4 C -0.081      
5 C -0.081      
6 H 0.257      
7 H 0.257      
8 H 0.236      
9 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.055 1.055
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.535 0.000 0.000
y 0.000 -35.257 0.000
z 0.000 0.000 -21.738
Traceless
 xyz
x -0.038 0.000 0.000
y 0.000 -10.120 0.000
z 0.000 0.000 10.158
Polar
3z2-r220.316
x2-y26.722
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.578 0.000 0.000
y 0.000 4.753 0.000
z 0.000 0.000 7.671


<r2> (average value of r2) Å2
<r2> 76.282
(<r2>)1/2 8.734