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

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-226.173778
Energy at 298.15K-226.179815
HF Energy-226.173778
Nuclear repulsion energy161.035194
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 B3LYP/LANL2DZ
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' 3683 3540 52.63      
2 A' 3327 3198 2.31      
3 A' 3307 3179 2.24      
4 A' 3297 3169 3.39      
5 A' 1538 1478 15.29      
6 A' 1479 1421 11.79      
7 A' 1402 1348 15.46      
8 A' 1355 1302 7.13      
9 A' 1279 1229 0.74      
10 A' 1165 1119 0.25      
11 A' 1136 1092 7.87      
12 A' 1100 1058 24.08      
13 A' 1066 1024 47.22      
14 A' 944 907 3.74      
15 A' 906 871 7.91      
16 A" 892 857 1.94      
17 A" 824 792 54.66      
18 A" 765 735 60.65      
19 A" 679 653 10.82      
20 A" 665 639 128.23      
21 A" 628 604 29.52      

Unscaled Zero Point Vibrational Energy (zpe) 15717.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 15107.6 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 B3LYP/LANL2DZ
ABC
0.31528 0.30606 0.15530

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.120 0.000
C2 -1.111 0.290 0.000
C3 1.134 0.304 0.000
N4 -0.750 -0.997 0.000
C5 0.650 -0.998 0.000
H6 -0.007 2.130 0.000
H7 -2.125 0.659 0.000
H8 2.137 0.700 0.000
H9 1.208 -1.922 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.38681.39692.24562.21541.01092.17482.17763.2724
C21.38682.24541.33672.18252.14631.07913.27383.2050
C31.39692.24542.28961.38882.15363.27871.07812.2266
N42.24561.33672.28961.40073.21452.15253.34862.1658
C52.21542.18251.38881.40073.19693.23292.25651.0789
H61.01092.14632.15363.21453.19692.57952.57724.2303
H72.17481.07913.27872.15253.23292.57954.26244.2158
H82.17763.27381.07813.34862.25652.57724.26242.7809
H93.27243.20502.22662.16581.07894.23034.21582.7809

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 111.064 N1 C2 H7 123.273
N1 C3 C5 105.358 N1 C3 H8 122.719
C2 N1 C3 107.529 C2 N1 H6 126.347
C2 N4 C5 105.723 C3 N1 H6 126.124
C3 C5 N4 110.326 C3 C5 H9 128.486
N4 C2 H7 125.663 N4 C5 H9 121.187
C5 C3 H8 131.923
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.332      
2 C -0.183      
3 C -0.199      
4 N -0.100      
5 C -0.263      
6 H 0.312      
7 H 0.255      
8 H 0.260      
9 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.382 3.907 0.000 4.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.503 -3.819 0.000
y -3.819 -25.833 0.000
z 0.000 0.000 -32.259
Traceless
 xyz
x 2.543 -3.819 0.000
y -3.819 3.548 0.000
z 0.000 0.000 -6.091
Polar
3z2-r2-12.182
x2-y2-0.670
xy-3.819
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.112 -0.108 0.000
y -0.108 6.954 0.000
z 0.000 0.000 2.794


<r2> (average value of r2) Å2
<r2> 81.683
(<r2>)1/2 9.038