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

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-226.089947
Energy at 298.15K-226.095870
HF Energy-226.089947
Nuclear repulsion energy165.838668
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 BLYP/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 3121 3113 28.76      
2 A1 2972 2964 0.78      
3 A1 1637 1633 20.46      
4 A1 1377 1373 14.42      
5 A1 1350 1347 9.12      
6 A1 1220 1217 8.16      
7 A1 998 996 4.14      
8 A1 885 883 12.15      
9 A2 1117 1114 0.00      
10 A2 877 875 0.00      
11 A2 532 531 0.00      
12 B1 2997 2989 0.19      
13 B1 984 982 16.82      
14 B1 797 795 7.76      
15 B1 365 364 36.34      
16 B2 3106 3098 16.44      
17 B2 1694 1689 1.58      
18 B2 1326 1323 36.70      
19 B2 1205 1202 2.71      
20 B2 1051 1049 28.75      
21 B2 915 913 77.83      

Unscaled Zero Point Vibrational Energy (zpe) 15262.3 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 15224.1 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 BLYP/6-311G*
ABC
0.35975 0.29991 0.16886

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.209
N2 0.000 0.997 0.283
N3 0.000 -0.997 0.283
C4 0.000 0.733 -0.954
C5 0.000 -0.733 -0.954
H6 -0.896 0.000 1.852
H7 0.896 0.000 1.852
H8 0.000 1.492 -1.737
H9 0.000 -1.492 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36111.36112.28352.28351.10261.10263.30213.3021
N21.36111.99461.26422.12672.06362.06362.07923.2056
N31.36111.99462.12671.26422.06362.06363.20562.0792
C42.28351.26422.12671.46623.03463.03461.09072.3592
C52.28352.12671.26421.46623.03463.03462.35921.0907
H61.10262.06362.06363.03463.03461.79203.98813.9881
H71.10262.06362.06363.03463.03461.79203.98813.9881
H83.30212.07923.20561.09072.35923.98813.98812.9845
H93.30213.20562.07922.35921.09073.98813.98812.9845

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 120.824 C1 N3 C5 120.824
N2 C1 N3 94.230 N2 C1 H6 113.364
N2 C1 H7 113.364 N2 C4 C5 102.061
N2 C4 H8 123.829 N3 C1 H6 113.364
N3 C1 H7 113.364 N3 C5 C4 102.061
N3 C5 H9 123.829 C4 C5 H9 134.110
C5 C4 H8 134.110 H6 C1 H7 108.714
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.222      
2 N -0.214      
3 N -0.214      
4 C -0.113      
5 C -0.113      
6 H 0.243      
7 H 0.243      
8 H 0.195      
9 H 0.195      


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 -0.485 0.485
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.408 0.000 0.000
y 0.000 -35.071 0.000
z 0.000 0.000 -22.226
Traceless
 xyz
x 0.240 0.000 0.000
y 0.000 -9.754 0.000
z 0.000 0.000 9.514
Polar
3z2-r219.028
x2-y26.663
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.807 0.000 0.000
y 0.000 5.612 0.000
z 0.000 0.000 8.326


<r2> (average value of r2) Å2
<r2> 77.965
(<r2>)1/2 8.830