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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-224.881494
Energy at 298.15K-224.887703
HF Energy-224.881494
Nuclear repulsion energy162.562363
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 HF/Def2TZVPP
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 3346 3033 23.01      
2 A1 3201 2902 15.15      
3 A1 1774 1608 15.32      
4 A1 1566 1419 5.31      
5 A1 1462 1325 23.72      
6 A1 1083 982 6.15      
7 A1 1028 931 2.25      
8 A1 913 828 3.79      
9 A2 1303 1181 0.00      
10 A2 1097 994 0.00      
11 A2 610 553 0.00      
12 B1 3235 2932 7.56      
13 B1 1142 1035 31.23      
14 B1 935 847 1.74      
15 B1 429 389 32.32      
16 B2 3331 3019 11.53      
17 B2 1853 1680 1.22      
18 B2 1442 1307 8.70      
19 B2 1390 1260 0.42      
20 B2 1076 975 93.75      
21 B2 965 875 12.42      

Unscaled Zero Point Vibrational Energy (zpe) 16589.1 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 15036.3 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 HF/Def2TZVPP
ABC
0.33232 0.29532 0.16098

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.142
N2 0.000 1.090 0.281
N3 0.000 -1.090 0.281
C4 0.000 0.745 -0.907
C5 0.000 -0.745 -0.907
H6 -0.885 0.000 1.766
H7 0.885 0.000 1.766
H8 0.000 1.449 -1.716
H9 0.000 -1.449 -1.716

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.38841.38842.18022.18021.08261.08263.20373.2037
N21.38842.17941.23772.18592.04292.04292.02913.2298
N31.38842.17942.18591.23772.04292.04293.22982.0291
C42.18021.23772.18591.48952.91242.91241.07192.3377
C52.18022.18591.23771.48952.91242.91242.33771.0719
H61.08262.04292.04292.91242.91241.76943.87323.8732
H71.08262.04292.04292.91242.91241.76943.87323.8732
H83.20372.02913.22981.07192.33773.87323.87322.8974
H93.20373.22982.02912.33771.07193.87323.87322.8974

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 112.109 C1 N3 C5 112.109
N2 C1 N3 103.417 N2 C1 H6 110.924
N2 C1 H7 110.924 N2 C4 C5 106.182
N2 C4 H8 122.769 N3 C1 H6 110.924
N3 C1 H7 110.924 N3 C5 C4 106.182
N3 C5 H9 122.769 C4 C5 H9 131.049
C5 C4 H8 131.049 H6 C1 H7 109.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.229      
2 N -0.338      
3 N -0.338      
4 C 0.054      
5 C 0.054      
6 H 0.073      
7 H 0.073      
8 H 0.096      
9 H 0.096      


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 -1.570 1.570
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.205 0.000 0.000
y 0.000 -36.175 0.000
z 0.000 0.000 -23.089
Traceless
 xyz
x 0.427 0.000 0.000
y 0.000 -10.028 0.000
z 0.000 0.000 9.601
Polar
3z2-r219.202
x2-y26.970
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.412 0.000 0.000
y 0.000 6.074 0.000
z 0.000 0.000 8.048


<r2> (average value of r2) Å2
<r2> 80.355
(<r2>)1/2 8.964