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

using model chemistry: B2PLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-311G**
 hartrees
Energy at 0K-225.951945
Energy at 298.15K-225.957968
HF Energy-225.702867
Nuclear repulsion energy166.706542
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 B2PLYP/6-311G**
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 3243 3243 14.44      
2 A1 3085 3085 0.00      
3 A1 1694 1694 20.31      
4 A1 1427 1427 9.04      
5 A1 1396 1396 14.52      
6 A1 1259 1259 6.11      
7 A1 1037 1037 2.27      
8 A1 932 932 13.77      
9 A2 1152 1152 0.00      
10 A2 917 917 0.00      
11 A2 546 546 0.00      
12 B1 3125 3125 0.04      
13 B1 1019 1019 21.27      
14 B1 831 831 6.16      
15 B1 365 365 37.18      
16 B2 3229 3229 6.74      
17 B2 1758 1758 0.26      
18 B2 1390 1390 36.90      
19 B2 1247 1247 1.70      
20 B2 1087 1087 33.95      
21 B2 940 940 71.61      

Unscaled Zero Point Vibrational Energy (zpe) 15839.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15839.7 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 B2PLYP/6-311G**
ABC
0.36223 0.30393 0.17065

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G**

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 1.831
H7 0.894 0.000 1.831
H8 0.000 1.474 -1.729
H9 0.000 -1.474 -1.729

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35721.35722.26892.26891.09281.09283.28113.2811
N21.35721.99381.25712.11722.04812.04812.06613.1855
N31.35721.99382.11721.25712.04812.04813.18552.0661
C42.26891.25712.11721.45583.00753.00751.08122.3370
C52.26892.11721.25711.45583.00753.00752.33701.0812
H61.09282.04812.04813.00753.00751.78753.95563.9556
H71.09282.04812.04813.00753.00751.78753.95563.9556
H83.28112.06613.18551.08122.33703.95563.95562.9486
H93.28113.18552.06612.33701.08123.95563.95562.9486

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 120.380 C1 N3 C5 120.380
N2 C1 N3 94.528 N2 C1 H6 112.986
N2 C1 H7 112.986 N2 C4 C5 102.356
N2 C4 H8 123.990 N3 C1 H6 112.986
N3 C1 H7 112.986 N3 C5 C4 102.356
N3 C5 H9 123.990 C4 C5 H9 133.655
C5 C4 H8 133.655 H6 C1 H7 109.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.074      
2 N -0.314      
3 N -0.314      
4 C 0.003      
5 C 0.003      
6 H 0.156      
7 H 0.156      
8 H 0.118      
9 H 0.118      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.749 0.000 0.000
y 0.000 5.289 0.000
z 0.000 0.000 7.956


<r2> (average value of r2) Å2
<r2> 77.173
(<r2>)1/2 8.785