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

using model chemistry: LSDA/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/6-31G*
 hartrees
Energy at 0K-224.877561
Energy at 298.15K-224.883497
HF Energy-224.877561
Nuclear repulsion energy166.947860
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 LSDA/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 A1 3160 3101 13.47      
2 A1 2994 2938 1.84      
3 A1 1711 1679 16.21      
4 A1 1392 1366 0.09      
5 A1 1327 1302 40.20      
6 A1 1258 1235 6.85      
7 A1 1036 1016 1.96      
8 A1 914 897 13.08      
9 A2 1096 1076 0.00      
10 A2 889 872 0.00      
11 A2 541 531 0.00      
12 B1 3032 2975 2.77      
13 B1 958 940 13.37      
14 B1 796 781 4.36      
15 B1 376 369 43.65      
16 B2 3145 3087 7.75      
17 B2 1780 1747 0.08      
18 B2 1365 1339 32.18      
19 B2 1192 1170 0.15      
20 B2 1063 1043 24.46      
21 B2 904 887 85.36      

Unscaled Zero Point Vibrational Energy (zpe) 15463.6 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 15174.4 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 LSDA/6-31G*
ABC
0.36399 0.30506 0.17143

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.192
N2 0.000 0.996 0.284
N3 0.000 -0.996 0.284
C4 0.000 0.722 -0.945
C5 0.000 -0.722 -0.945
H6 -0.896 0.000 1.842
H7 0.896 0.000 1.842
H8 0.000 1.479 -1.737
H9 0.000 -1.479 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.34711.34712.25512.25511.10761.10763.28053.2805
N21.34711.99141.25902.11232.05472.05472.07793.1948
N31.34711.99142.11231.25902.05472.05473.19482.0779
C42.25511.25902.11231.44463.01523.01521.09522.3391
C52.25512.11231.25901.44463.01523.01522.33911.0952
H61.10762.05472.05473.01523.01521.79283.97473.9747
H71.10762.05472.05473.01523.01521.79283.97473.9747
H83.28052.07793.19481.09522.33913.97473.97472.9572
H93.28053.19482.07792.33911.09523.97473.97472.9572

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 119.799 C1 N3 C5 119.799
N2 C1 N3 95.316 N2 C1 H6 113.303
N2 C1 H7 113.303 N2 C4 C5 102.542
N2 C4 H8 123.781 N3 C1 H6 113.303
N3 C1 H7 113.303 N3 C5 C4 102.542
N3 C5 H9 123.781 C4 C5 H9 133.677
C5 C4 H8 133.677 H6 C1 H7 108.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 N -0.298      
3 N -0.298      
4 C -0.039      
5 C -0.039      
6 H 0.247      
7 H 0.247      
8 H 0.177      
9 H 0.177      


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 -0.365 0.365
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.860 0.000 0.000
y 0.000 -34.377 0.000
z 0.000 0.000 -21.538
Traceless
 xyz
x 0.098 0.000 0.000
y 0.000 -9.678 0.000
z 0.000 0.000 9.581
Polar
3z2-r219.161
x2-y26.517
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.426 0.000 0.000
y 0.000 5.227 0.000
z 0.000 0.000 8.050


<r2> (average value of r2) Å2
<r2> 76.741
(<r2>)1/2 8.760