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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-225.951750
Energy at 298.15K-225.957704
HF Energy-225.951750
Nuclear repulsion energy164.474691
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/6-31G
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 3191 3167 18.35      
2 A1 3007 2984 0.01      
3 A1 1625 1613 25.59      
4 A1 1411 1401 21.06      
5 A1 1335 1325 0.72      
6 A1 1225 1215 9.41      
7 A1 1006 998 8.90      
8 A1 881 874 7.44      
9 A2 1129 1120 0.00      
10 A2 884 877 0.00      
11 A2 542 538 0.00      
12 B1 3041 3018 0.00      
13 B1 1011 1003 11.66      
14 B1 809 803 8.17      
15 B1 378 376 48.96      
16 B2 3175 3151 15.41      
17 B2 1672 1660 0.02      
18 B2 1292 1282 13.12      
19 B2 1231 1222 2.83      
20 B2 1047 1039 29.12      
21 B2 923 916 86.84      

Unscaled Zero Point Vibrational Energy (zpe) 15407.3 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 15290.2 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/6-31G
ABC
0.35738 0.29222 0.16589

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.228
N2 0.000 0.998 0.286
N3 0.000 -0.998 0.286
C4 0.000 0.740 -0.967
C5 0.000 -0.740 -0.967
H6 -0.896 0.000 1.869
H7 0.896 0.000 1.869
H8 0.000 1.493 -1.752
H9 0.000 -1.493 -1.752

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37281.37282.31672.31671.10221.10223.33333.3333
N21.37281.99671.27932.14292.07562.07562.09723.2185
N31.37281.99672.14291.27932.07562.07563.21852.0972
C42.31671.27932.14291.48023.06563.06561.08762.3668
C52.31672.14291.27931.48023.06563.06562.36681.0876
H61.10222.07562.07563.06563.06561.79294.01864.0186
H71.10222.07562.07563.06563.06561.79294.01864.0186
H83.33332.09723.21851.08762.36684.01864.01862.9853
H93.33333.21852.09722.36681.08764.01864.01862.9853

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 121.702 C1 N3 C5 121.702
N2 C1 N3 93.306 N2 C1 H6 113.539
N2 C1 H7 113.539 N2 C4 C5 101.645
N2 C4 H8 124.574 N3 C1 H6 113.539
N3 C1 H7 113.539 N3 C5 C4 101.645
N3 C5 H9 124.574 C4 C5 H9 133.781
C5 C4 H8 133.781 H6 C1 H7 108.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 N -0.326      
3 N -0.326      
4 C 0.013      
5 C 0.013      
6 H 0.210      
7 H 0.210      
8 H 0.136      
9 H 0.136      


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 -0.409 0.409
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.058 0.000 0.000
y 0.000 -35.844 0.000
z 0.000 0.000 -21.807
Traceless
 xyz
x 0.768 0.000 0.000
y 0.000 -10.912 0.000
z 0.000 0.000 10.144
Polar
3z2-r220.288
x2-y27.786
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.248 0.000 0.000
y 0.000 5.021 0.000
z 0.000 0.000 8.099


<r2> (average value of r2) Å2
<r2> 78.983
(<r2>)1/2 8.887