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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-226.117464
Energy at 298.15K-226.123470
HF Energy-226.117464
Nuclear repulsion energy166.603170
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/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 3238 3109 18.27      
2 A1 3069 2947 0.31      
3 A1 1726 1657 21.70      
4 A1 1437 1380 7.15      
5 A1 1405 1350 11.89      
6 A1 1266 1215 5.53      
7 A1 1040 998 2.77      
8 A1 935 898 12.00      
9 A2 1156 1111 0.00      
10 A2 920 883 0.00      
11 A2 549 527 0.00      
12 B1 3103 2979 0.15      
13 B1 1021 981 15.32      
14 B1 828 795 3.39      
15 B1 372 357 39.48      
16 B2 3223 3095 13.29      
17 B2 1793 1722 0.10      
18 B2 1399 1344 34.75      
19 B2 1256 1207 1.20      
20 B2 1091 1048 31.03      
21 B2 931 894 74.99      

Unscaled Zero Point Vibrational Energy (zpe) 15878.0 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 15247.7 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/6-31G*
ABC
0.36217 0.30339 0.17047

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.202
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.728 -0.947
C5 0.000 -0.728 -0.947
H6 -0.894 0.000 1.839
H7 0.894 0.000 1.839
H8 0.000 1.475 -1.734
H9 0.000 -1.475 -1.734

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35751.35752.26922.26921.09721.09723.28583.2858
N21.35751.99381.25712.11732.05422.05422.07073.1892
N31.35751.99382.11731.25712.05422.05423.18922.0707
C42.26921.25712.11731.45583.01493.01491.08512.3395
C52.26922.11731.25711.45583.01493.01492.33951.0851
H61.09722.05422.05423.01493.01491.78743.96723.9672
H71.09722.05422.05423.01493.01491.78743.96723.9672
H83.28582.07073.18921.08512.33953.96723.96722.9507
H93.28583.18922.07072.33951.08513.96723.96722.9507

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 120.388 C1 N3 C5 120.388
N2 C1 N3 94.510 N2 C1 H6 113.191
N2 C1 H7 113.191 N2 C4 C5 102.356
N2 C4 H8 124.109 N3 C1 H6 113.191
N3 C1 H7 113.191 N3 C5 C4 102.356
N3 C5 H9 124.109 C4 C5 H9 133.535
C5 C4 H8 133.535 H6 C1 H7 109.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.049      
2 N -0.346      
3 N -0.346      
4 C 0.009      
5 C 0.009      
6 H 0.208      
7 H 0.208      
8 H 0.154      
9 H 0.154      


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 -0.608 0.608
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.890 0.000 0.000
y 0.000 -34.465 0.000
z 0.000 0.000 -21.766
Traceless
 xyz
x 0.225 0.000 0.000
y 0.000 -9.637 0.000
z 0.000 0.000 9.412
Polar
3z2-r218.824
x2-y26.575
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.347 0.000 0.000
y 0.000 5.005 0.000
z 0.000 0.000 7.847


<r2> (average value of r2) Å2
<r2> 77.050
(<r2>)1/2 8.778