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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-226.113462
Energy at 298.15K-226.119312
HF Energy-226.113462
Nuclear repulsion energy158.895416
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 3126 3100 25.54      
2 A1 2980 2955 3.62      
3 A1 1484 1472 7.67      
4 A1 1388 1377 10.01      
5 A1 1313 1302 8.21      
6 A1 957 949 0.24      
7 A1 939 932 2.60      
8 A1 812 805 4.82      
9 A2 1153 1144 0.00      
10 A2 934 927 0.00      
11 A2 559 555 0.00      
12 B1 3009 2985 3.38      
13 B1 993 985 17.60      
14 B1 801 795 0.97      
15 B1 391 388 29.29      
16 B2 3111 3085 17.40      
17 B2 1586 1573 0.31      
18 B2 1257 1247 0.44      
19 B2 1233 1223 0.00      
20 B2 918 911 77.94      
21 B2 864 857 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 14903.2 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 14782.4 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 BLYP/6-31G*
ABC
0.31932 0.28183 0.15406

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 1.153
N2 0.000 1.092 0.286
N3 0.000 -1.092 0.286
C4 0.000 0.748 -0.919
C5 0.000 -0.748 -0.919
H6 -0.890 0.000 1.783
H7 0.890 0.000 1.783
H8 0.000 1.459 -1.732
H9 0.000 -1.459 -1.732

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.39431.39432.20292.20291.09061.09063.23323.2332
N21.39432.18341.25292.19892.05582.05582.05103.2526
N31.39432.18342.19891.25292.05582.05583.25262.0510
C42.20291.25292.19891.49552.94152.94151.08042.3520
C52.20292.19891.25291.49552.94152.94152.35201.0804
H61.09062.05582.05582.94152.94151.78083.90863.9086
H71.09062.05582.05582.94152.94151.78083.90863.9086
H83.23322.05103.25261.08042.35203.90863.90862.9186
H93.23323.25262.05102.35201.08043.90863.90862.9186

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 112.533 C1 N3 C5 112.533
N2 C1 N3 103.066 N2 C1 H6 111.054
N2 C1 H7 111.054 N2 C4 C5 105.934
N2 C4 H8 122.872 N3 C1 H6 111.054
N3 C1 H7 111.054 N3 C5 C4 105.934
N3 C5 H9 122.872 C4 C5 H9 131.194
C5 C4 H8 131.194 H6 C1 H7 109.451
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 -0.062      
2 N -0.329      
3 N -0.329      
4 C 0.050      
5 C 0.050      
6 H 0.180      
7 H 0.180      
8 H 0.130      
9 H 0.130      


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 -1.028 1.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.583 0.000 0.000
y 0.000 -35.112 0.000
z 0.000 0.000 -23.421
Traceless
 xyz
x 0.683 0.000 0.000
y 0.000 -9.110 0.000
z 0.000 0.000 8.426
Polar
3z2-r216.852
x2-y26.529
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.402 0.000 0.000
y 0.000 5.243 0.000
z 0.000 0.000 8.087


<r2> (average value of r2) Å2
<r2> 82.755
(<r2>)1/2 9.097